From 43cc71eed1250755986da4c0f9898f9a635cb3bf Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Sat, 18 Aug 2007 04:40:39 +0200 Subject: platform: prefix MODALIAS with "platform:" Prefix platform modalias strings with "platform:", which modprobe config to blacklist alias resolving if userspace configures it. Send uevents for all platform devices. Add MODULE_ALIAS's to: pxa2xx_pcmcia, ds1742 and pcspkr to trigger module autoloading by userspace. $ modinfo pcspkr alias: platform:pcspkr license: GPL description: PC Speaker beeper driver ... $ modprobe -n -v platform:pcspkr insmod /lib/modules/2.6.23-rc3-g28e8351a-dirty/kernel/drivers/input/misc/pcspkr.ko Signed-off-by: Kay Sievers Cc: David Brownell Cc: Atsushi Nemoto Signed-off-by: Greg Kroah-Hartman --- drivers/base/platform.c | 15 ++------------- 1 file changed, 2 insertions(+), 13 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 869ff8c00146..9bfc434d1327 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -160,11 +160,6 @@ static void platform_device_release(struct device *dev) * * Create a platform device object which can have other objects attached * to it, and which will have attached objects freed when it is released. - * - * This device will be marked as not supporting hotpluggable drivers; no - * device add/remove uevents will be generated. In the unusual case that - * the device isn't being dynamically allocated as a legacy "probe the - * hardware" driver, infrastructure code should reverse this marking. */ struct platform_device *platform_device_alloc(const char *name, unsigned int id) { @@ -177,12 +172,6 @@ struct platform_device *platform_device_alloc(const char *name, unsigned int id) pa->pdev.id = id; device_initialize(&pa->pdev.dev); pa->pdev.dev.release = platform_device_release; - - /* prevent hotplug "modprobe $(MODALIAS)" from causing trouble in - * legacy probe-the-hardware drivers, which don't properly split - * out device enumeration logic from drivers. - */ - pa->pdev.dev.uevent_suppress = 1; } return pa ? &pa->pdev : NULL; @@ -530,7 +519,7 @@ static ssize_t modalias_show(struct device *dev, struct device_attribute *a, char *buf) { struct platform_device *pdev = to_platform_device(dev); - int len = snprintf(buf, PAGE_SIZE, "%s\n", pdev->name); + int len = snprintf(buf, PAGE_SIZE, "platform:%s\n", pdev->name); return (len >= PAGE_SIZE) ? (PAGE_SIZE - 1) : len; } @@ -546,7 +535,7 @@ static int platform_uevent(struct device *dev, char **envp, int num_envp, struct platform_device *pdev = to_platform_device(dev); envp[0] = buffer; - snprintf(buffer, buffer_size, "MODALIAS=%s", pdev->name); + snprintf(buffer, buffer_size, "MODALIAS=platform:%s", pdev->name); return 0; } -- cgit v1.2.3 From 8380770c842faef3001e44662953d64ad9a93663 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Mon, 30 Jul 2007 02:28:56 +0200 Subject: Driver core: make sysfs uevent-attributes static Attributes do not have an owner(module) anymore, so there is no need to carry the attributes in every single bus instance. Signed-off-by: Kay Sievers Acked-by: Tejun Heo Signed-off-by: Greg Kroah-Hartman --- drivers/base/bus.c | 21 +++++++++------------ include/linux/device.h | 2 -- 2 files changed, 9 insertions(+), 14 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 61c67526a656..ff850d1b0d92 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -568,32 +568,29 @@ static void remove_bind_files(struct device_driver *drv) driver_remove_file(drv, &driver_attr_unbind); } +static BUS_ATTR(drivers_probe, S_IWUSR, NULL, store_drivers_probe); +static BUS_ATTR(drivers_autoprobe, S_IWUSR | S_IRUGO, + show_drivers_autoprobe, store_drivers_autoprobe); + static int add_probe_files(struct bus_type *bus) { int retval; - bus->drivers_probe_attr.attr.name = "drivers_probe"; - bus->drivers_probe_attr.attr.mode = S_IWUSR; - bus->drivers_probe_attr.store = store_drivers_probe; - retval = bus_create_file(bus, &bus->drivers_probe_attr); + retval = bus_create_file(bus, &bus_attr_drivers_probe); if (retval) goto out; - bus->drivers_autoprobe_attr.attr.name = "drivers_autoprobe"; - bus->drivers_autoprobe_attr.attr.mode = S_IWUSR | S_IRUGO; - bus->drivers_autoprobe_attr.show = show_drivers_autoprobe; - bus->drivers_autoprobe_attr.store = store_drivers_autoprobe; - retval = bus_create_file(bus, &bus->drivers_autoprobe_attr); + retval = bus_create_file(bus, &bus_attr_drivers_autoprobe); if (retval) - bus_remove_file(bus, &bus->drivers_probe_attr); + bus_remove_file(bus, &bus_attr_drivers_probe); out: return retval; } static void remove_probe_files(struct bus_type *bus) { - bus_remove_file(bus, &bus->drivers_autoprobe_attr); - bus_remove_file(bus, &bus->drivers_probe_attr); + bus_remove_file(bus, &bus_attr_drivers_autoprobe); + bus_remove_file(bus, &bus_attr_drivers_probe); } #else static inline int add_bind_files(struct device_driver *drv) { return 0; } diff --git a/include/linux/device.h b/include/linux/device.h index 3a38d1f70cb7..5d97ca6d8655 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -64,8 +64,6 @@ struct bus_type { struct bus_attribute * bus_attrs; struct device_attribute * dev_attrs; struct driver_attribute * drv_attrs; - struct bus_attribute drivers_autoprobe_attr; - struct bus_attribute drivers_probe_attr; int (*match)(struct device * dev, struct device_driver * drv); int (*uevent)(struct device *dev, char **envp, -- cgit v1.2.3 From 7eff2e7a8b65c25920207324e56611150eb1cd9a Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Tue, 14 Aug 2007 15:15:12 +0200 Subject: Driver core: change add_uevent_var to use a struct This changes the uevent buffer functions to use a struct instead of a long list of parameters. It does no longer require the caller to do the proper buffer termination and size accounting, which is currently wrong in some places. It fixes a known bug where parts of the uevent environment are overwritten because of wrong index calculations. Many thanks to Mathieu Desnoyers for finding bugs and improving the error handling. Signed-off-by: Kay Sievers Cc: Mathieu Desnoyers Cc: Cornelia Huck Signed-off-by: Greg Kroah-Hartman --- arch/ia64/sn/kernel/tiocx.c | 3 +- arch/powerpc/kernel/of_device.c | 37 ++----- arch/powerpc/kernel/vio.c | 16 +-- arch/powerpc/platforms/ps3/system-bus.c | 9 +- block/genhd.c | 35 ++----- drivers/acpi/scan.c | 16 +-- drivers/amba/bus.c | 9 +- drivers/base/class.c | 42 ++------ drivers/base/core.c | 84 +++++----------- drivers/base/firmware_class.c | 11 +- drivers/base/memory.c | 3 +- drivers/base/platform.c | 6 +- drivers/eisa/eisa-bus.c | 9 +- drivers/firewire/fw-device.c | 11 +- drivers/firmware/dmi-id.c | 17 ++-- drivers/i2c/i2c-core.c | 8 +- drivers/ide/ide.c | 17 +--- drivers/ieee1394/nodemgr.c | 17 +--- drivers/infiniband/core/sysfs.c | 9 +- drivers/input/input.c | 62 ++++-------- drivers/input/serio/serio.c | 11 +- drivers/media/video/pvrusb2/pvrusb2-sysfs.c | 4 +- drivers/misc/tifm_core.c | 9 +- drivers/mmc/core/bus.c | 21 ++-- drivers/pci/hotplug.c | 28 ++---- drivers/pci/pci-driver.c | 3 +- drivers/pci/pci.h | 3 +- drivers/pcmcia/cs.c | 10 +- drivers/pcmcia/ds.c | 26 ++--- drivers/power/power_supply.h | 3 +- drivers/power/power_supply_sysfs.c | 17 +--- drivers/s390/cio/ccwgroup.c | 3 +- drivers/s390/cio/device.c | 25 ++--- drivers/s390/crypto/ap_bus.c | 14 +-- drivers/scsi/scsi_sysfs.c | 9 +- drivers/spi/spi.c | 7 +- drivers/usb/core/driver.c | 29 ++---- drivers/usb/core/message.c | 28 ++---- drivers/w1/w1.c | 19 ++-- include/asm-powerpc/of_device.h | 2 +- include/linux/device.h | 15 +-- include/linux/kobject.h | 23 +++-- lib/kobject_uevent.c | 149 ++++++++++++---------------- net/atm/atm_sysfs.c | 7 +- net/core/net-sysfs.c | 14 +-- net/wireless/sysfs.c | 3 +- sound/aoa/soundbus/core.c | 33 ++---- 47 files changed, 300 insertions(+), 636 deletions(-) (limited to 'drivers/base') diff --git a/arch/ia64/sn/kernel/tiocx.c b/arch/ia64/sn/kernel/tiocx.c index 5a289e4de838..a88eba3314d7 100644 --- a/arch/ia64/sn/kernel/tiocx.c +++ b/arch/ia64/sn/kernel/tiocx.c @@ -66,8 +66,7 @@ static int tiocx_match(struct device *dev, struct device_driver *drv) } -static int tiocx_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int tiocx_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/arch/powerpc/kernel/of_device.c b/arch/powerpc/kernel/of_device.c index 89b911e83c04..8f3db32fac8b 100644 --- a/arch/powerpc/kernel/of_device.c +++ b/arch/powerpc/kernel/of_device.c @@ -57,26 +57,21 @@ ssize_t of_device_get_modalias(struct of_device *ofdev, return tsize; } -int of_device_uevent(struct device *dev, - char **envp, int num_envp, char *buffer, int buffer_size) +int of_device_uevent(struct device *dev, struct kobj_uevent_env *env) { struct of_device *ofdev; const char *compat; - int i = 0, length = 0, seen = 0, cplen, sl; + int seen = 0, cplen, sl; if (!dev) return -ENODEV; ofdev = to_of_device(dev); - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_NAME=%s", ofdev->node->name)) + if (add_uevent_var(env, "OF_NAME=%s", ofdev->node->name)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_TYPE=%s", ofdev->node->type)) + if (add_uevent_var(env, "OF_TYPE=%s", ofdev->node->type)) return -ENOMEM; /* Since the compatible field can contain pretty much anything @@ -85,9 +80,7 @@ int of_device_uevent(struct device *dev, compat = of_get_property(ofdev->node, "compatible", &cplen); while (compat && *compat && cplen > 0) { - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_COMPATIBLE_%d=%s", seen, compat)) + if (add_uevent_var(env, "OF_COMPATIBLE_%d=%s", seen, compat)) return -ENOMEM; sl = strlen (compat) + 1; @@ -96,25 +89,17 @@ int of_device_uevent(struct device *dev, seen++; } - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_COMPATIBLE_N=%d", seen)) + if (add_uevent_var(env, "OF_COMPATIBLE_N=%d", seen)) return -ENOMEM; /* modalias is trickier, we add it in 2 steps */ - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=")) + if (add_uevent_var(env, "MODALIAS=")) return -ENOMEM; - - sl = of_device_get_modalias(ofdev, &buffer[length-1], - buffer_size-length); - if (sl >= (buffer_size-length)) + sl = of_device_get_modalias(ofdev, &env->buf[env->buflen-1], + sizeof(env->buf) - env->buflen); + if (sl >= (sizeof(env->buf) - env->buflen)) return -ENOMEM; - - length += sl; - - envp[i] = NULL; + env->buflen += sl; return 0; } diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c index cb22a3557c4e..19a5656001c0 100644 --- a/arch/powerpc/kernel/vio.c +++ b/arch/powerpc/kernel/vio.c @@ -317,30 +317,20 @@ static int vio_bus_match(struct device *dev, struct device_driver *drv) return (ids != NULL) && (vio_match_device(ids, vio_dev) != NULL); } -static int vio_hotplug(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int vio_hotplug(struct device *dev, struct kobj_uevent_env *env) { const struct vio_dev *vio_dev = to_vio_dev(dev); struct device_node *dn; const char *cp; - int length; - - if (!num_envp) - return -ENOMEM; dn = dev->archdata.of_node; if (!dn) return -ENODEV; - cp = of_get_property(dn, "compatible", &length); + cp = of_get_property(dn, "compatible", NULL); if (!cp) return -ENODEV; - envp[0] = buffer; - length = scnprintf(buffer, buffer_size, "MODALIAS=vio:T%sS%s", - vio_dev->type, cp); - if ((buffer_size - length) <= 0) - return -ENOMEM; - envp[1] = NULL; + add_uevent_var(env, "MODALIAS=vio:T%sS%s", vio_dev->type, cp); return 0; } diff --git a/arch/powerpc/platforms/ps3/system-bus.c b/arch/powerpc/platforms/ps3/system-bus.c index 4bb634a17e43..ea0b2c790412 100644 --- a/arch/powerpc/platforms/ps3/system-bus.c +++ b/arch/powerpc/platforms/ps3/system-bus.c @@ -437,18 +437,13 @@ static void ps3_system_bus_shutdown(struct device *_dev) dev_dbg(&dev->core, " <- %s:%d\n", __func__, __LINE__); } -static int ps3_system_bus_uevent(struct device *_dev, char **envp, - int num_envp, char *buffer, int buffer_size) +static int ps3_system_bus_uevent(struct device *_dev, struct kobj_uevent_env *env) { struct ps3_system_bus_device *dev = ps3_dev_to_system_bus_dev(_dev); int i = 0, length = 0; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "MODALIAS=ps3:%d", - dev->match_id)) + if (add_uevent_var(env, "MODALIAS=ps3:%d", dev->match_id)) return -ENOMEM; - - envp[i] = NULL; return 0; } diff --git a/block/genhd.c b/block/genhd.c index 3af1e7a378d4..e609996f2e76 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -540,61 +540,42 @@ static int block_uevent_filter(struct kset *kset, struct kobject *kobj) return ((ktype == &ktype_block) || (ktype == &ktype_part)); } -static int block_uevent(struct kset *kset, struct kobject *kobj, char **envp, - int num_envp, char *buffer, int buffer_size) +static int block_uevent(struct kset *kset, struct kobject *kobj, + struct kobj_uevent_env *env) { struct kobj_type *ktype = get_ktype(kobj); struct device *physdev; struct gendisk *disk; struct hd_struct *part; - int length = 0; - int i = 0; if (ktype == &ktype_block) { disk = container_of(kobj, struct gendisk, kobj); - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "MINOR=%u", disk->first_minor); + add_uevent_var(env, "MINOR=%u", disk->first_minor); } else if (ktype == &ktype_part) { disk = container_of(kobj->parent, struct gendisk, kobj); part = container_of(kobj, struct hd_struct, kobj); - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "MINOR=%u", + add_uevent_var(env, "MINOR=%u", disk->first_minor + part->partno); } else return 0; - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "MAJOR=%u", disk->major); + add_uevent_var(env, "MAJOR=%u", disk->major); /* add physical device, backing this device */ physdev = disk->driverfs_dev; if (physdev) { char *path = kobject_get_path(&physdev->kobj, GFP_KERNEL); - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "PHYSDEVPATH=%s", path); + add_uevent_var(env, "PHYSDEVPATH=%s", path); kfree(path); if (physdev->bus) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVBUS=%s", - physdev->bus->name); + add_uevent_var(env, "PHYSDEVBUS=%s", physdev->bus->name); if (physdev->driver) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVDRIVER=%s", - physdev->driver->name); + add_uevent_var(env, physdev->driver->name); } - /* terminate, set to next free slot, shrink available space */ - envp[i] = NULL; - envp = &envp[i]; - num_envp -= i; - buffer = &buffer[length]; - buffer_size -= length; - return 0; } diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 64620d668742..5b4d462117cf 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -319,16 +319,18 @@ static int acpi_bus_match(struct device *dev, struct device_driver *drv) return !acpi_match_device_ids(acpi_dev, acpi_drv->ids); } -static int acpi_device_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int acpi_device_uevent(struct device *dev, struct kobj_uevent_env *env) { struct acpi_device *acpi_dev = to_acpi_device(dev); + int len; - strcpy(buffer, "MODALIAS="); - if (create_modalias(acpi_dev, buffer + 9, buffer_size - 9) > 0) { - envp[0] = buffer; - envp[1] = NULL; - } + if (add_uevent_var(env, "MODALIAS=")) + return -ENOMEM; + len = create_modalias(acpi_dev, &env->buf[env->buflen - 1], + sizeof(env->buf) - env->buflen); + if (len >= (sizeof(env->buf) - env->buflen)) + return -ENOMEM; + env->buflen += len; return 0; } diff --git a/drivers/amba/bus.c b/drivers/amba/bus.c index 268e301775fc..6b94fb7be5f2 100644 --- a/drivers/amba/bus.c +++ b/drivers/amba/bus.c @@ -44,15 +44,12 @@ static int amba_match(struct device *dev, struct device_driver *drv) } #ifdef CONFIG_HOTPLUG -static int amba_uevent(struct device *dev, char **envp, int nr_env, char *buf, int bufsz) +static int amba_uevent(struct device *dev, struct kobj_uevent_env *env) { struct amba_device *pcdev = to_amba_device(dev); - int retval = 0, i = 0, len = 0; + int retval = 0; - retval = add_uevent_var(envp, nr_env, &i, - buf, bufsz, &len, - "AMBA_ID=%08x", pcdev->periphid); - envp[i] = NULL; + retval = add_uevent_var(env, "AMBA_ID=%08x", pcdev->periphid); return retval; } #else diff --git a/drivers/base/class.c b/drivers/base/class.c index 4d2222618b78..ecd6336bffea 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -180,8 +180,7 @@ static void class_device_create_release(struct class_device *class_dev) /* needed to allow these devices to have parent class devices */ static int class_device_create_uevent(struct class_device *class_dev, - char **envp, int num_envp, - char *buffer, int buffer_size) + struct kobj_uevent_env *env) { pr_debug("%s called for %s\n", __FUNCTION__, class_dev->class_id); return 0; @@ -403,64 +402,43 @@ static void remove_deprecated_class_device_links(struct class_device *cd) { } #endif -static int class_uevent(struct kset *kset, struct kobject *kobj, char **envp, - int num_envp, char *buffer, int buffer_size) +static int class_uevent(struct kset *kset, struct kobject *kobj, + struct kobj_uevent_env *env) { struct class_device *class_dev = to_class_dev(kobj); struct device *dev = class_dev->dev; - int i = 0; - int length = 0; int retval = 0; pr_debug("%s - name = %s\n", __FUNCTION__, class_dev->class_id); if (MAJOR(class_dev->devt)) { - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MAJOR=%u", MAJOR(class_dev->devt)); + add_uevent_var(env, "MAJOR=%u", MAJOR(class_dev->devt)); - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MINOR=%u", MINOR(class_dev->devt)); + add_uevent_var(env, "MINOR=%u", MINOR(class_dev->devt)); } if (dev) { const char *path = kobject_get_path(&dev->kobj, GFP_KERNEL); if (path) { - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVPATH=%s", path); + add_uevent_var(env, "PHYSDEVPATH=%s", path); kfree(path); } if (dev->bus) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVBUS=%s", dev->bus->name); + add_uevent_var(env, "PHYSDEVBUS=%s", dev->bus->name); if (dev->driver) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVDRIVER=%s", dev->driver->name); + add_uevent_var(env, "PHYSDEVDRIVER=%s", dev->driver->name); } - /* terminate, set to next free slot, shrink available space */ - envp[i] = NULL; - envp = &envp[i]; - num_envp -= i; - buffer = &buffer[length]; - buffer_size -= length; - if (class_dev->uevent) { /* have the class device specific function add its stuff */ - retval = class_dev->uevent(class_dev, envp, num_envp, - buffer, buffer_size); + retval = class_dev->uevent(class_dev, env); if (retval) pr_debug("class_dev->uevent() returned %d\n", retval); } else if (class_dev->class->uevent) { /* have the class specific function add its stuff */ - retval = class_dev->class->uevent(class_dev, envp, num_envp, - buffer, buffer_size); + retval = class_dev->class->uevent(class_dev, env); if (retval) pr_debug("class->uevent() returned %d\n", retval); } diff --git a/drivers/base/core.c b/drivers/base/core.c index ec86d6fc2360..d487c032dc4a 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -141,33 +141,23 @@ static const char *dev_uevent_name(struct kset *kset, struct kobject *kobj) return NULL; } -static int dev_uevent(struct kset *kset, struct kobject *kobj, char **envp, - int num_envp, char *buffer, int buffer_size) +static int dev_uevent(struct kset *kset, struct kobject *kobj, + struct kobj_uevent_env *env) { struct device *dev = to_dev(kobj); - int i = 0; - int length = 0; int retval = 0; /* add the major/minor if present */ if (MAJOR(dev->devt)) { - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MAJOR=%u", MAJOR(dev->devt)); - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MINOR=%u", MINOR(dev->devt)); + add_uevent_var(env, "MAJOR=%u", MAJOR(dev->devt)); + add_uevent_var(env, "MINOR=%u", MINOR(dev->devt)); } if (dev->type && dev->type->name) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DEVTYPE=%s", dev->type->name); + add_uevent_var(env, "DEVTYPE=%s", dev->type->name); if (dev->driver) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DRIVER=%s", dev->driver->name); + add_uevent_var(env, "DRIVER=%s", dev->driver->name); #ifdef CONFIG_SYSFS_DEPRECATED if (dev->class) { @@ -181,59 +171,43 @@ static int dev_uevent(struct kset *kset, struct kobject *kobj, char **envp, path = kobject_get_path(&parent->kobj, GFP_KERNEL); if (path) { - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVPATH=%s", path); + add_uevent_var(env, "PHYSDEVPATH=%s", path); kfree(path); } - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVBUS=%s", parent->bus->name); + add_uevent_var(env, "PHYSDEVBUS=%s", parent->bus->name); if (parent->driver) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVDRIVER=%s", parent->driver->name); + add_uevent_var(env, "PHYSDEVDRIVER=%s", + parent->driver->name); } } else if (dev->bus) { - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVBUS=%s", dev->bus->name); + add_uevent_var(env, "PHYSDEVBUS=%s", dev->bus->name); if (dev->driver) - add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PHYSDEVDRIVER=%s", dev->driver->name); + add_uevent_var(env, "PHYSDEVDRIVER=%s", dev->driver->name); } #endif - /* terminate, set to next free slot, shrink available space */ - envp[i] = NULL; - envp = &envp[i]; - num_envp -= i; - buffer = &buffer[length]; - buffer_size -= length; - + /* have the bus specific function add its stuff */ if (dev->bus && dev->bus->uevent) { - /* have the bus specific function add its stuff */ - retval = dev->bus->uevent(dev, envp, num_envp, buffer, buffer_size); + retval = dev->bus->uevent(dev, env); if (retval) pr_debug ("%s: bus uevent() returned %d\n", __FUNCTION__, retval); } + /* have the class specific function add its stuff */ if (dev->class && dev->class->dev_uevent) { - /* have the class specific function add its stuff */ - retval = dev->class->dev_uevent(dev, envp, num_envp, buffer, buffer_size); + retval = dev->class->dev_uevent(dev, env); if (retval) pr_debug("%s: class uevent() returned %d\n", __FUNCTION__, retval); } + /* have the device type specific fuction add its stuff */ if (dev->type && dev->type->uevent) { - /* have the device type specific fuction add its stuff */ - retval = dev->type->uevent(dev, envp, num_envp, buffer, buffer_size); + retval = dev->type->uevent(dev, env); if (retval) pr_debug("%s: dev_type uevent() returned %d\n", __FUNCTION__, retval); @@ -253,9 +227,7 @@ static ssize_t show_uevent(struct device *dev, struct device_attribute *attr, { struct kobject *top_kobj; struct kset *kset; - char *envp[32]; - char *data = NULL; - char *pos; + struct kobj_uevent_env *env = NULL; int i; size_t count = 0; int retval; @@ -278,26 +250,20 @@ static ssize_t show_uevent(struct device *dev, struct device_attribute *attr, if (!kset->uevent_ops->filter(kset, &dev->kobj)) goto out; - data = (char *)get_zeroed_page(GFP_KERNEL); - if (!data) + env = kzalloc(sizeof(struct kobj_uevent_env), GFP_KERNEL); + if (!env) return -ENOMEM; /* let the kset specific function add its keys */ - pos = data; - memset(envp, 0, sizeof(envp)); - retval = kset->uevent_ops->uevent(kset, &dev->kobj, - envp, ARRAY_SIZE(envp), - pos, PAGE_SIZE); + retval = kset->uevent_ops->uevent(kset, &dev->kobj, env); if (retval) goto out; /* copy keys to file */ - for (i = 0; envp[i]; i++) { - pos = &buf[count]; - count += sprintf(pos, "%s\n", envp[i]); - } + for (i = 0; i < env->envp_idx; i++) + count += sprintf(&buf[count], "%s\n", env->envp[i]); out: - free_page((unsigned long)data); + kfree(env); return count; } diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index b24efd4e3e3d..4a1b9bfc5471 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -88,19 +88,14 @@ static CLASS_ATTR(timeout, 0644, firmware_timeout_show, firmware_timeout_store); static void fw_dev_release(struct device *dev); -static int firmware_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int firmware_uevent(struct device *dev, struct kobj_uevent_env *env) { struct firmware_priv *fw_priv = dev_get_drvdata(dev); - int i = 0, len = 0; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "FIRMWARE=%s", fw_priv->fw_id)) + if (add_uevent_var(env, "FIRMWARE=%s", fw_priv->fw_id)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "TIMEOUT=%i", loading_timeout)) + if (add_uevent_var(env, "TIMEOUT=%i", loading_timeout)) return -ENOMEM; - envp[i] = NULL; return 0; } diff --git a/drivers/base/memory.c b/drivers/base/memory.c index 74b96795d2f5..cb99daeae936 100644 --- a/drivers/base/memory.c +++ b/drivers/base/memory.c @@ -34,8 +34,7 @@ static const char *memory_uevent_name(struct kset *kset, struct kobject *kobj) return MEMORY_CLASS_NAME; } -static int memory_uevent(struct kset *kset, struct kobject *kobj, char **envp, - int num_envp, char *buffer, int buffer_size) +static int memory_uevent(struct kset *kset, struct kobj_uevent_env *env) { int retval = 0; diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 9bfc434d1327..a2e3910196e0 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -529,13 +529,11 @@ static struct device_attribute platform_dev_attrs[] = { __ATTR_NULL, }; -static int platform_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int platform_uevent(struct device *dev, struct kobj_uevent_env *env) { struct platform_device *pdev = to_platform_device(dev); - envp[0] = buffer; - snprintf(buffer, buffer_size, "MODALIAS=platform:%s", pdev->name); + add_uevent_var(env, "MODALIAS=platform:%s", pdev->name); return 0; } diff --git a/drivers/eisa/eisa-bus.c b/drivers/eisa/eisa-bus.c index d944647c82c2..4d4a47393909 100644 --- a/drivers/eisa/eisa-bus.c +++ b/drivers/eisa/eisa-bus.c @@ -128,16 +128,11 @@ static int eisa_bus_match (struct device *dev, struct device_driver *drv) return 0; } -static int eisa_bus_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int eisa_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { struct eisa_device *edev = to_eisa_device(dev); - int i = 0; - int length = 0; - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "MODALIAS=" EISA_DEVICE_MODALIAS_FMT, edev->id.sig); - envp[i] = NULL; + add_uevent_var(env, "MODALIAS=" EISA_DEVICE_MODALIAS_FMT, edev->id.sig); return 0; } diff --git a/drivers/firewire/fw-device.c b/drivers/firewire/fw-device.c index 2b6586341635..56681b3b297b 100644 --- a/drivers/firewire/fw-device.c +++ b/drivers/firewire/fw-device.c @@ -130,23 +130,16 @@ static int get_modalias(struct fw_unit *unit, char *buffer, size_t buffer_size) } static int -fw_unit_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +fw_unit_uevent(struct device *dev, struct kobj_uevent_env *env) { struct fw_unit *unit = fw_unit(dev); char modalias[64]; - int length = 0; - int i = 0; get_modalias(unit, modalias, sizeof(modalias)); - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=%s", modalias)) + if (add_uevent_var(env, "MODALIAS=%s", modalias)) return -ENOMEM; - envp[i] = NULL; - return 0; } diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c index 59c3b5aa89f4..2678098d4504 100644 --- a/drivers/firmware/dmi-id.c +++ b/drivers/firmware/dmi-id.c @@ -134,14 +134,17 @@ static struct attribute_group* sys_dmi_attribute_groups[] = { NULL }; -static int dmi_dev_uevent(struct device *dev, char **envp, - int num_envp, char *buffer, int buffer_size) +static int dmi_dev_uevent(struct device *dev, struct kobj_uevent_env *env) { - strcpy(buffer, "MODALIAS="); - get_modalias(buffer+9, buffer_size-9); - envp[0] = buffer; - envp[1] = NULL; - + ssize_t len; + + if (add_uevent_var(env, "MODALIAS=")) + return -ENOMEM; + len = get_modalias(&env->buf[env->buflen - 1], + sizeof(env->buf) - env->buflen); + if (len >= (sizeof(env->buf) - env->buflen)) + return -ENOMEM; + env->buflen += len; return 0; } diff --git a/drivers/i2c/i2c-core.c b/drivers/i2c/i2c-core.c index d663e6960d93..910a62de190d 100644 --- a/drivers/i2c/i2c-core.c +++ b/drivers/i2c/i2c-core.c @@ -67,20 +67,16 @@ static int i2c_device_match(struct device *dev, struct device_driver *drv) #ifdef CONFIG_HOTPLUG /* uevent helps with hotplug: modprobe -q $(MODALIAS) */ -static int i2c_device_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int i2c_device_uevent(struct device *dev, struct kobj_uevent_env *env) { struct i2c_client *client = to_i2c_client(dev); - int i = 0, length = 0; /* by definition, legacy drivers can't hotplug */ if (dev->driver || !client->driver_name) return 0; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "MODALIAS=%s", client->driver_name)) + if (add_uevent_var(env, "MODALIAS=%s", client->driver_name)) return -ENOMEM; - envp[i] = NULL; dev_dbg(dev, "uevent\n"); return 0; } diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c index e96212ce5729..a96a8b1b3539 100644 --- a/drivers/ide/ide.c +++ b/drivers/ide/ide.c @@ -1663,20 +1663,13 @@ static struct device_attribute ide_dev_attrs[] = { __ATTR_NULL }; -static int ide_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int ide_uevent(struct device *dev, struct kobj_uevent_env *env) { ide_drive_t *drive = to_ide_device(dev); - int i = 0; - int length = 0; - - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "MEDIA=%s", media_string(drive)); - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "DRIVENAME=%s", drive->name); - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "MODALIAS=ide:m-%s", media_string(drive)); - envp[i] = NULL; + + add_uevent_var(env, "MEDIA=%s", media_string(drive)); + add_uevent_var(env, "DRIVENAME=%s", drive->name); + add_uevent_var(env, "MODALIAS=ide:m-%s", media_string(drive)); return 0; } diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c index 2ffd53461db6..1939fee616ec 100644 --- a/drivers/ieee1394/nodemgr.c +++ b/drivers/ieee1394/nodemgr.c @@ -153,8 +153,7 @@ struct host_info { }; static int nodemgr_bus_match(struct device * dev, struct device_driver * drv); -static int nodemgr_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size); +static int nodemgr_uevent(struct device *dev, struct kobj_uevent_env *env); static void nodemgr_resume_ne(struct node_entry *ne); static void nodemgr_remove_ne(struct node_entry *ne); static struct node_entry *find_entry_by_guid(u64 guid); @@ -1160,12 +1159,9 @@ static void nodemgr_process_root_directory(struct host_info *hi, struct node_ent #ifdef CONFIG_HOTPLUG -static int nodemgr_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int nodemgr_uevent(struct device *dev, struct kobj_uevent_env *env) { struct unit_directory *ud; - int i = 0; - int length = 0; int retval = 0; /* ieee1394:venNmoNspNverN */ char buf[8 + 1 + 3 + 8 + 2 + 8 + 2 + 8 + 3 + 8 + 1]; @@ -1180,9 +1176,7 @@ static int nodemgr_uevent(struct device *dev, char **envp, int num_envp, #define PUT_ENVP(fmt,val) \ do { \ - retval = add_uevent_var(envp, num_envp, &i, \ - buffer, buffer_size, &length, \ - fmt, val); \ + retval = add_uevent_var(env, fmt, val); \ if (retval) \ return retval; \ } while (0) @@ -1201,15 +1195,12 @@ do { \ #undef PUT_ENVP - envp[i] = NULL; - return 0; } #else -static int nodemgr_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int nodemgr_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/infiniband/core/sysfs.c b/drivers/infiniband/core/sysfs.c index 70b77ae67422..3d4050681325 100644 --- a/drivers/infiniband/core/sysfs.c +++ b/drivers/infiniband/core/sysfs.c @@ -434,21 +434,18 @@ static void ib_device_release(struct class_device *cdev) kfree(dev); } -static int ib_device_uevent(struct class_device *cdev, char **envp, - int num_envp, char *buf, int size) +static int ib_device_uevent(struct class_device *cdev, + struct kobj_uevent_env *env) { struct ib_device *dev = container_of(cdev, struct ib_device, class_dev); - int i = 0, len = 0; - if (add_uevent_var(envp, num_envp, &i, buf, size, &len, - "NAME=%s", dev->name)) + if (add_uevent_var(env, "NAME=%s", dev->name)) return -ENOMEM; /* * It would be nice to pass the node GUID with the event... */ - envp[i] = NULL; return 0; } diff --git a/drivers/input/input.c b/drivers/input/input.c index 5fe755586623..5dc361c954e2 100644 --- a/drivers/input/input.c +++ b/drivers/input/input.c @@ -859,87 +859,66 @@ static void input_dev_release(struct device *device) * Input uevent interface - loading event handlers based on * device bitfields. */ -static int input_add_uevent_bm_var(char **envp, int num_envp, int *cur_index, - char *buffer, int buffer_size, int *cur_len, +static int input_add_uevent_bm_var(struct kobj_uevent_env *env, const char *name, unsigned long *bitmap, int max) { - if (*cur_index >= num_envp - 1) - return -ENOMEM; - - envp[*cur_index] = buffer + *cur_len; + int len; - *cur_len += snprintf(buffer + *cur_len, max(buffer_size - *cur_len, 0), name); - if (*cur_len >= buffer_size) + if (add_uevent_var(env, "%s=", name)) return -ENOMEM; - *cur_len += input_print_bitmap(buffer + *cur_len, - max(buffer_size - *cur_len, 0), - bitmap, max, 0) + 1; - if (*cur_len > buffer_size) + len = input_print_bitmap(&env->buf[env->buflen - 1], + sizeof(env->buf) - env->buflen, + bitmap, max, 0); + if (len >= (sizeof(env->buf) - env->buflen)) return -ENOMEM; - (*cur_index)++; + env->buflen += len; return 0; } -static int input_add_uevent_modalias_var(char **envp, int num_envp, int *cur_index, - char *buffer, int buffer_size, int *cur_len, +static int input_add_uevent_modalias_var(struct kobj_uevent_env *env, struct input_dev *dev) { - if (*cur_index >= num_envp - 1) - return -ENOMEM; - - envp[*cur_index] = buffer + *cur_len; + int len; - *cur_len += snprintf(buffer + *cur_len, max(buffer_size - *cur_len, 0), - "MODALIAS="); - if (*cur_len >= buffer_size) + if (add_uevent_var(env, "MODALIAS=")) return -ENOMEM; - *cur_len += input_print_modalias(buffer + *cur_len, - max(buffer_size - *cur_len, 0), - dev, 0) + 1; - if (*cur_len > buffer_size) + len = input_print_modalias(&env->buf[env->buflen - 1], + sizeof(env->buf) - env->buflen, + dev, 0); + if (len >= (sizeof(env->buf) - env->buflen)) return -ENOMEM; - (*cur_index)++; + env->buflen += len; return 0; } #define INPUT_ADD_HOTPLUG_VAR(fmt, val...) \ do { \ - int err = add_uevent_var(envp, num_envp, &i, \ - buffer, buffer_size, &len, \ - fmt, val); \ + int err = add_uevent_var(env, fmt, val); \ if (err) \ return err; \ } while (0) #define INPUT_ADD_HOTPLUG_BM_VAR(name, bm, max) \ do { \ - int err = input_add_uevent_bm_var(envp, num_envp, &i, \ - buffer, buffer_size, &len, \ - name, bm, max); \ + int err = input_add_uevent_bm_var(env, name, bm, max); \ if (err) \ return err; \ } while (0) #define INPUT_ADD_HOTPLUG_MODALIAS_VAR(dev) \ do { \ - int err = input_add_uevent_modalias_var(envp, \ - num_envp, &i, \ - buffer, buffer_size, &len, \ - dev); \ + int err = input_add_uevent_modalias_var(env, dev); \ if (err) \ return err; \ } while (0) -static int input_dev_uevent(struct device *device, char **envp, - int num_envp, char *buffer, int buffer_size) +static int input_dev_uevent(struct device *device, struct kobj_uevent_env *env) { struct input_dev *dev = to_input_dev(device); - int i = 0; - int len = 0; INPUT_ADD_HOTPLUG_VAR("PRODUCT=%x/%x/%x/%x", dev->id.bustype, dev->id.vendor, @@ -971,7 +950,6 @@ static int input_dev_uevent(struct device *device, char **envp, INPUT_ADD_HOTPLUG_MODALIAS_VAR(dev); - envp[i] = NULL; return 0; } diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c index 372ca4931194..b3bc15acd3f5 100644 --- a/drivers/input/serio/serio.c +++ b/drivers/input/serio/serio.c @@ -876,18 +876,14 @@ static int serio_bus_match(struct device *dev, struct device_driver *drv) #define SERIO_ADD_UEVENT_VAR(fmt, val...) \ do { \ - int err = add_uevent_var(envp, num_envp, &i, \ - buffer, buffer_size, &len, \ - fmt, val); \ + int err = add_uevent_var(env, fmt, val); \ if (err) \ return err; \ } while (0) -static int serio_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size) +static int serio_uevent(struct device *dev, struct kobj_uevent_env *env) { struct serio *serio; - int i = 0; - int len = 0; if (!dev) return -ENODEV; @@ -900,7 +896,6 @@ static int serio_uevent(struct device *dev, char **envp, int num_envp, char *buf SERIO_ADD_UEVENT_VAR("SERIO_EXTRA=%02x", serio->id.extra); SERIO_ADD_UEVENT_VAR("MODALIAS=serio:ty%02Xpr%02Xid%02Xex%02X", serio->id.type, serio->id.proto, serio->id.id, serio->id.extra); - envp[i] = NULL; return 0; } @@ -908,7 +903,7 @@ static int serio_uevent(struct device *dev, char **envp, int num_envp, char *buf #else -static int serio_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size) +static int serio_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/media/video/pvrusb2/pvrusb2-sysfs.c b/drivers/media/video/pvrusb2/pvrusb2-sysfs.c index 7a78d6b34738..2ee3c3049e8f 100644 --- a/drivers/media/video/pvrusb2/pvrusb2-sysfs.c +++ b/drivers/media/video/pvrusb2/pvrusb2-sysfs.c @@ -905,8 +905,8 @@ struct pvr2_sysfs *pvr2_sysfs_create(struct pvr2_context *mp, } -static int pvr2_sysfs_hotplug(struct device *cd,char **envp, - int numenvp,char *buf,int size) +static int pvr2_sysfs_hotplug(struct device *d, + struct kobj_uevent_env *env) { /* Even though we don't do anything here, we still need this function because sysfs will still try to call it. */ diff --git a/drivers/misc/tifm_core.c b/drivers/misc/tifm_core.c index d195fb088f4a..8f77949f93dd 100644 --- a/drivers/misc/tifm_core.c +++ b/drivers/misc/tifm_core.c @@ -57,16 +57,11 @@ static int tifm_bus_match(struct device *dev, struct device_driver *drv) return 0; } -static int tifm_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int tifm_uevent(struct device *dev, struct kobj_uevent_env *env) { struct tifm_dev *sock = container_of(dev, struct tifm_dev, dev); - int i = 0; - int length = 0; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "TIFM_CARD_TYPE=%s", - tifm_media_type_name(sock->type, 1))) + if (add_uevent_var(env, "TIFM_CARD_TYPE=%s", tifm_media_type_name(sock->type, 1))) return -ENOMEM; return 0; diff --git a/drivers/mmc/core/bus.c b/drivers/mmc/core/bus.c index 8d6f6014870f..b0c22cad9423 100644 --- a/drivers/mmc/core/bus.c +++ b/drivers/mmc/core/bus.c @@ -58,12 +58,11 @@ static int mmc_bus_match(struct device *dev, struct device_driver *drv) } static int -mmc_bus_uevent(struct device *dev, char **envp, int num_envp, char *buf, - int buf_size) +mmc_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { struct mmc_card *card = dev_to_mmc_card(dev); const char *type; - int i = 0, length = 0; + int retval = 0; switch (card->type) { case MMC_TYPE_MMC: @@ -80,20 +79,14 @@ mmc_bus_uevent(struct device *dev, char **envp, int num_envp, char *buf, } if (type) { - if (add_uevent_var(envp, num_envp, &i, - buf, buf_size, &length, - "MMC_TYPE=%s", type)) - return -ENOMEM; + retval = add_uevent_var(env, "MMC_TYPE=%s", type); + if (retval) + return retval; } - if (add_uevent_var(envp, num_envp, &i, - buf, buf_size, &length, - "MMC_NAME=%s", mmc_card_name(card))) - return -ENOMEM; + retval = add_uevent_var(env, "MMC_NAME=%s", mmc_card_name(card)); - envp[i] = NULL; - - return 0; + return retval; } static int mmc_bus_probe(struct device *dev) diff --git a/drivers/pci/hotplug.c b/drivers/pci/hotplug.c index 1c97e7dd130b..2b5352a7dffc 100644 --- a/drivers/pci/hotplug.c +++ b/drivers/pci/hotplug.c @@ -3,12 +3,9 @@ #include #include "pci.h" -int pci_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +int pci_uevent(struct device *dev, struct kobj_uevent_env *env) { struct pci_dev *pdev; - int i = 0; - int length = 0; if (!dev) return -ENODEV; @@ -17,37 +14,24 @@ int pci_uevent(struct device *dev, char **envp, int num_envp, if (!pdev) return -ENODEV; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PCI_CLASS=%04X", pdev->class)) + if (add_uevent_var(env, "PCI_CLASS=%04X", pdev->class)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PCI_ID=%04X:%04X", pdev->vendor, pdev->device)) + if (add_uevent_var(env, "PCI_ID=%04X:%04X", pdev->vendor, pdev->device)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor, + if (add_uevent_var(env, "PCI_SUBSYS_ID=%04X:%04X", pdev->subsystem_vendor, pdev->subsystem_device)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PCI_SLOT_NAME=%s", pci_name(pdev))) + if (add_uevent_var(env, "PCI_SLOT_NAME=%s", pci_name(pdev))) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x", + if (add_uevent_var(env, "MODALIAS=pci:v%08Xd%08Xsv%08Xsd%08Xbc%02Xsc%02Xi%02x", pdev->vendor, pdev->device, pdev->subsystem_vendor, pdev->subsystem_device, (u8)(pdev->class >> 16), (u8)(pdev->class >> 8), (u8)(pdev->class))) return -ENOMEM; - - envp[i] = NULL; - return 0; } diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c index 004bc2487270..f61be3abfdca 100644 --- a/drivers/pci/pci-driver.c +++ b/drivers/pci/pci-driver.c @@ -532,8 +532,7 @@ void pci_dev_put(struct pci_dev *dev) } #ifndef CONFIG_HOTPLUG -int pci_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +int pci_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index 4c36e80f6d26..b3a7d5b0f936 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -1,7 +1,6 @@ /* Functions internal to the PCI core code */ -extern int pci_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size); +extern int pci_uevent(struct device *dev, struct kobj_uevent_env *env); extern int pci_create_sysfs_dev_files(struct pci_dev *pdev); extern void pci_remove_sysfs_dev_files(struct pci_dev *pdev); extern void pci_cleanup_rom(struct pci_dev *dev); diff --git a/drivers/pcmcia/cs.c b/drivers/pcmcia/cs.c index f8b13f0270d7..a0aca46ce877 100644 --- a/drivers/pcmcia/cs.c +++ b/drivers/pcmcia/cs.c @@ -907,18 +907,14 @@ int pcmcia_insert_card(struct pcmcia_socket *skt) EXPORT_SYMBOL(pcmcia_insert_card); -static int pcmcia_socket_uevent(struct device *dev, char **envp, - int num_envp, char *buffer, int buffer_size) +static int pcmcia_socket_uevent(struct device *dev, + struct kobj_uevent_env *env) { struct pcmcia_socket *s = container_of(dev, struct pcmcia_socket, dev); - int i = 0, length = 0; - if (add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "SOCKET_NO=%u", s->sock)) + if (add_uevent_var(env, "SOCKET_NO=%u", s->sock)) return -ENOMEM; - envp[i] = NULL; - return 0; } diff --git a/drivers/pcmcia/ds.c b/drivers/pcmcia/ds.c index a99607142fc8..55baa1f0fcbb 100644 --- a/drivers/pcmcia/ds.c +++ b/drivers/pcmcia/ds.c @@ -1064,11 +1064,10 @@ static int pcmcia_bus_match(struct device * dev, struct device_driver * drv) { #ifdef CONFIG_HOTPLUG -static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { struct pcmcia_device *p_dev; - int i, length = 0; + int i; u32 hash[4] = { 0, 0, 0, 0}; if (!dev) @@ -1083,23 +1082,13 @@ static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp, hash[i] = crc32(0, p_dev->prod_id[i], strlen(p_dev->prod_id[i])); } - i = 0; - - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "SOCKET_NO=%u", - p_dev->socket->sock)) + if (add_uevent_var(env, "SOCKET_NO=%u", p_dev->socket->sock)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DEVICE_NO=%02X", - p_dev->device_no)) + if (add_uevent_var(env, "DEVICE_NO=%02X", p_dev->device_no)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" + if (add_uevent_var(env, "MODALIAS=pcmcia:m%04Xc%04Xf%02Xfn%02Xpfn%02X" "pa%08Xpb%08Xpc%08Xpd%08X", p_dev->has_manf_id ? p_dev->manf_id : 0, p_dev->has_card_id ? p_dev->card_id : 0, @@ -1112,15 +1101,12 @@ static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp, hash[3])) return -ENOMEM; - envp[i] = NULL; - return 0; } #else -static int pcmcia_bus_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int pcmcia_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/power/power_supply.h b/drivers/power/power_supply.h index a9880d468ee4..f38ba482be75 100644 --- a/drivers/power/power_supply.h +++ b/drivers/power/power_supply.h @@ -14,8 +14,7 @@ extern int power_supply_create_attrs(struct power_supply *psy); extern void power_supply_remove_attrs(struct power_supply *psy); -extern int power_supply_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size); +extern int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env); #else diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c index de3155b21285..249f61bae639 100644 --- a/drivers/power/power_supply_sysfs.c +++ b/drivers/power/power_supply_sysfs.c @@ -195,11 +195,10 @@ static char *kstruprdup(const char *str, gfp_t gfp) return ret; } -int power_supply_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +int power_supply_uevent(struct device *dev, struct kobj_uevent_env *env) { struct power_supply *psy = dev_get_drvdata(dev); - int i = 0, length = 0, ret = 0, j; + int ret = 0, j; char *prop_buf; char *attrname; @@ -212,8 +211,7 @@ int power_supply_uevent(struct device *dev, char **envp, int num_envp, dev_dbg(dev, "POWER_SUPPLY_NAME=%s\n", psy->name); - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "POWER_SUPPLY_NAME=%s", psy->name); + ret = add_uevent_var(env, "POWER_SUPPLY_NAME=%s", psy->name); if (ret) return ret; @@ -243,9 +241,7 @@ int power_supply_uevent(struct device *dev, char **envp, int num_envp, dev_dbg(dev, "Static prop %s=%s\n", attrname, prop_buf); - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "POWER_SUPPLY_%s=%s", - attrname, prop_buf); + ret = add_uevent_var(env, "POWER_SUPPLY_%s=%s", attrname, prop_buf); kfree(attrname); if (ret) goto out; @@ -282,14 +278,11 @@ int power_supply_uevent(struct device *dev, char **envp, int num_envp, dev_dbg(dev, "prop %s=%s\n", attrname, prop_buf); - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, - &length, "POWER_SUPPLY_%s=%s", - attrname, prop_buf); + ret = add_uevent_var(env, "POWER_SUPPLY_%s=%s", attrname, prop_buf); kfree(attrname); if (ret) goto out; } - envp[i] = NULL; out: free_page((unsigned long)prop_buf); diff --git a/drivers/s390/cio/ccwgroup.c b/drivers/s390/cio/ccwgroup.c index b0a18f5176aa..5d967c439822 100644 --- a/drivers/s390/cio/ccwgroup.c +++ b/drivers/s390/cio/ccwgroup.c @@ -44,8 +44,7 @@ ccwgroup_bus_match (struct device * dev, struct device_driver * drv) return 0; } static int -ccwgroup_uevent (struct device *dev, char **envp, int num_envp, char *buffer, - int buffer_size) +ccwgroup_uevent (struct device *dev, struct kobj_uevent_env *env) { /* TODO */ return 0; diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index e44d92eac8e9..606bb53e9fae 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -78,49 +78,38 @@ static int snprint_alias(char *buf, size_t size, /* Set up environment variables for ccw device uevent. Return 0 on success, * non-zero otherwise. */ -static int ccw_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int ccw_uevent(struct device *dev, struct kobj_uevent_env *env) { struct ccw_device *cdev = to_ccwdev(dev); struct ccw_device_id *id = &(cdev->id); - int i = 0; - int len = 0; int ret; char modalias_buf[30]; /* CU_TYPE= */ - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "CU_TYPE=%04X", id->cu_type); + ret = add_uevent_var(env, "CU_TYPE=%04X", id->cu_type); if (ret) return ret; /* CU_MODEL= */ - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "CU_MODEL=%02X", id->cu_model); + ret = add_uevent_var(env, "CU_MODEL=%02X", id->cu_model); if (ret) return ret; /* The next two can be zero, that's ok for us */ /* DEV_TYPE= */ - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "DEV_TYPE=%04X", id->dev_type); + ret = add_uevent_var(env, "DEV_TYPE=%04X", id->dev_type); if (ret) return ret; /* DEV_MODEL= */ - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "DEV_MODEL=%02X", id->dev_model); + ret = add_uevent_var(env, "DEV_MODEL=%02X", id->dev_model); if (ret) return ret; /* MODALIAS= */ snprint_alias(modalias_buf, sizeof(modalias_buf), id, ""); - ret = add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &len, - "MODALIAS=%s", modalias_buf); - if (ret) - return ret; - envp[i] = NULL; - return 0; + ret = add_uevent_var(env, "MODALIAS=%s", modalias_buf); + return ret; } struct bus_type ccw_bus_type; diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index 90bd22014513..e99713041591 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -458,28 +458,22 @@ static int ap_bus_match(struct device *dev, struct device_driver *drv) * uevent function for AP devices. It sets up a single environment * variable DEV_TYPE which contains the hardware device type. */ -static int ap_uevent (struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int ap_uevent (struct device *dev, struct kobj_uevent_env *env) { struct ap_device *ap_dev = to_ap_dev(dev); - int retval = 0, length = 0, i = 0; + int retval = 0; if (!ap_dev) return -ENODEV; /* Set up DEV_TYPE environment variable. */ - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DEV_TYPE=%04X", ap_dev->device_type); + retval = add_uevent_var(env, "DEV_TYPE=%04X", ap_dev->device_type); if (retval) return retval; /* Add MODALIAS= */ - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=ap:t%02X", ap_dev->device_type); + retval = add_uevent_var(env, "MODALIAS=ap:t%02X", ap_dev->device_type); - envp[i] = NULL; return retval; } diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c index 34cdce6738a6..ede9986d349a 100644 --- a/drivers/scsi/scsi_sysfs.c +++ b/drivers/scsi/scsi_sysfs.c @@ -277,16 +277,11 @@ static int scsi_bus_match(struct device *dev, struct device_driver *gendrv) return (sdp->inq_periph_qual == SCSI_INQ_PQ_CON)? 1: 0; } -static int scsi_bus_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int scsi_bus_uevent(struct device *dev, struct kobj_uevent_env *env) { struct scsi_device *sdev = to_scsi_device(dev); - int i = 0; - int length = 0; - add_uevent_var(envp, num_envp, &i, buffer, buffer_size, &length, - "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); - envp[i] = NULL; + add_uevent_var(env, "MODALIAS=" SCSI_DEVICE_MODALIAS_FMT, sdev->type); return 0; } diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index e84d21597943..bcb8dd5fb0b4 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -67,14 +67,11 @@ static int spi_match_device(struct device *dev, struct device_driver *drv) return strncmp(spi->modalias, drv->name, BUS_ID_SIZE) == 0; } -static int spi_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int spi_uevent(struct device *dev, struct kobj_uevent_env *env) { const struct spi_device *spi = to_spi_device(dev); - envp[0] = buffer; - snprintf(buffer, buffer_size, "MODALIAS=%s", spi->modalias); - envp[1] = NULL; + add_uevent_var(env, "MODALIAS=%s", spi->modalias); return 0; } diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 63b1243a9139..6273a5197e6a 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -576,12 +576,9 @@ static int usb_device_match(struct device *dev, struct device_driver *drv) } #ifdef CONFIG_HOTPLUG -static int usb_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int usb_uevent(struct device *dev, struct kobj_uevent_env *env) { struct usb_device *usb_dev; - int i = 0; - int length = 0; if (!dev) return -ENODEV; @@ -610,51 +607,39 @@ static int usb_uevent(struct device *dev, char **envp, int num_envp, * all the device descriptors we don't tell them about. Or * act as usermode drivers. */ - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DEVICE=/proc/bus/usb/%03d/%03d", + if (add_uevent_var(env, "DEVICE=/proc/bus/usb/%03d/%03d", usb_dev->bus->busnum, usb_dev->devnum)) return -ENOMEM; #endif /* per-device configurations are common */ - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PRODUCT=%x/%x/%x", + if (add_uevent_var(env, "PRODUCT=%x/%x/%x", le16_to_cpu(usb_dev->descriptor.idVendor), le16_to_cpu(usb_dev->descriptor.idProduct), le16_to_cpu(usb_dev->descriptor.bcdDevice))) return -ENOMEM; /* class-based driver binding models */ - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "TYPE=%d/%d/%d", + if (add_uevent_var(env, "TYPE=%d/%d/%d", usb_dev->descriptor.bDeviceClass, usb_dev->descriptor.bDeviceSubClass, usb_dev->descriptor.bDeviceProtocol)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "BUSNUM=%03d", + if (add_uevent_var(env, "BUSNUM=%03d", usb_dev->bus->busnum)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DEVNUM=%03d", + if (add_uevent_var(env, "DEVNUM=%03d", usb_dev->devnum)) return -ENOMEM; - envp[i] = NULL; return 0; } #else -static int usb_uevent(struct device *dev, char **envp, - int num_envp, char *buffer, int buffer_size) +static int usb_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c index d8f7b089a8f0..95a49d8efe7a 100644 --- a/drivers/usb/core/message.c +++ b/drivers/usb/core/message.c @@ -1339,14 +1339,11 @@ void usb_release_interface(struct device *dev) } #ifdef CONFIG_HOTPLUG -static int usb_if_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env) { struct usb_device *usb_dev; struct usb_interface *intf; struct usb_host_interface *alt; - int i = 0; - int length = 0; if (!dev) return -ENODEV; @@ -1359,39 +1356,30 @@ static int usb_if_uevent(struct device *dev, char **envp, int num_envp, alt = intf->cur_altsetting; #ifdef CONFIG_USB_DEVICEFS - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "DEVICE=/proc/bus/usb/%03d/%03d", + if (add_uevent_var(env, "DEVICE=/proc/bus/usb/%03d/%03d", usb_dev->bus->busnum, usb_dev->devnum)) return -ENOMEM; #endif - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "PRODUCT=%x/%x/%x", + if (add_uevent_var(env, "PRODUCT=%x/%x/%x", le16_to_cpu(usb_dev->descriptor.idVendor), le16_to_cpu(usb_dev->descriptor.idProduct), le16_to_cpu(usb_dev->descriptor.bcdDevice))) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "TYPE=%d/%d/%d", + if (add_uevent_var(env, "TYPE=%d/%d/%d", usb_dev->descriptor.bDeviceClass, usb_dev->descriptor.bDeviceSubClass, usb_dev->descriptor.bDeviceProtocol)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "INTERFACE=%d/%d/%d", + if (add_uevent_var(env, "INTERFACE=%d/%d/%d", alt->desc.bInterfaceClass, alt->desc.bInterfaceSubClass, alt->desc.bInterfaceProtocol)) return -ENOMEM; - if (add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, + if (add_uevent_var(env, "MODALIAS=usb:v%04Xp%04Xd%04Xdc%02Xdsc%02Xdp%02Xic%02Xisc%02Xip%02X", le16_to_cpu(usb_dev->descriptor.idVendor), le16_to_cpu(usb_dev->descriptor.idProduct), @@ -1404,14 +1392,12 @@ static int usb_if_uevent(struct device *dev, char **envp, int num_envp, alt->desc.bInterfaceProtocol)) return -ENOMEM; - envp[i] = NULL; return 0; } #else -static int usb_if_uevent(struct device *dev, char **envp, - int num_envp, char *buffer, int buffer_size) +static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env) { return -ENODEV; } diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c index a593f900eff4..070217322c9f 100644 --- a/drivers/w1/w1.c +++ b/drivers/w1/w1.c @@ -197,7 +197,7 @@ static struct w1_family w1_default_family = { .fops = &w1_default_fops, }; -static int w1_uevent(struct device *dev, char **envp, int num_envp, char *buffer, int buffer_size); +static int w1_uevent(struct device *dev, struct kobj_uevent_env *env); static struct bus_type w1_bus_type = { .name = "w1", @@ -396,13 +396,12 @@ static void w1_destroy_master_attributes(struct w1_master *master) } #ifdef CONFIG_HOTPLUG -static int w1_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int w1_uevent(struct device *dev, struct kobj_uevent_env *env) { struct w1_master *md = NULL; struct w1_slave *sl = NULL; char *event_owner, *name; - int err, cur_index=0, cur_len=0; + int err; if (dev->driver == &w1_master_driver) { md = container_of(dev, struct w1_master, dev); @@ -423,23 +422,19 @@ static int w1_uevent(struct device *dev, char **envp, int num_envp, if (dev->driver != &w1_slave_driver || !sl) return 0; - err = add_uevent_var(envp, num_envp, &cur_index, buffer, buffer_size, - &cur_len, "W1_FID=%02X", sl->reg_num.family); + err = add_uevent_var(env, "W1_FID=%02X", sl->reg_num.family); if (err) return err; - err = add_uevent_var(envp, num_envp, &cur_index, buffer, buffer_size, - &cur_len, "W1_SLAVE_ID=%024LX", - (unsigned long long)sl->reg_num.id); - envp[cur_index] = NULL; + err = add_uevent_var(env, "W1_SLAVE_ID=%024LX", + (unsigned long long)sl->reg_num.id); if (err) return err; return 0; }; #else -static int w1_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int w1_uevent(struct device *dev, struct kobj_uevent_env *env) { return 0; } diff --git a/include/asm-powerpc/of_device.h b/include/asm-powerpc/of_device.h index ec2a8a2c737c..93262f2546ad 100644 --- a/include/asm-powerpc/of_device.h +++ b/include/asm-powerpc/of_device.h @@ -20,7 +20,7 @@ struct of_device extern ssize_t of_device_get_modalias(struct of_device *ofdev, char *str, ssize_t len); extern int of_device_uevent(struct device *dev, - char **envp, int num_envp, char *buffer, int buffer_size); + struct kobj_uevent_env *env); /* This is just here during the transition */ #include diff --git a/include/linux/device.h b/include/linux/device.h index 5d97ca6d8655..2e15822fe409 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -66,8 +66,7 @@ struct bus_type { struct driver_attribute * drv_attrs; int (*match)(struct device * dev, struct device_driver * drv); - int (*uevent)(struct device *dev, char **envp, - int num_envp, char *buffer, int buffer_size); + int (*uevent)(struct device *dev, struct kobj_uevent_env *env); int (*probe)(struct device * dev); int (*remove)(struct device * dev); void (*shutdown)(struct device * dev); @@ -187,10 +186,8 @@ struct class { struct class_device_attribute * class_dev_attrs; struct device_attribute * dev_attrs; - int (*uevent)(struct class_device *dev, char **envp, - int num_envp, char *buffer, int buffer_size); - int (*dev_uevent)(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size); + int (*uevent)(struct class_device *dev, struct kobj_uevent_env *env); + int (*dev_uevent)(struct device *dev, struct kobj_uevent_env *env); void (*release)(struct class_device *dev); void (*class_release)(struct class *class); @@ -266,8 +263,7 @@ struct class_device { struct attribute_group ** groups; /* optional groups */ void (*release)(struct class_device *dev); - int (*uevent)(struct class_device *dev, char **envp, - int num_envp, char *buffer, int buffer_size); + int (*uevent)(struct class_device *dev, struct kobj_uevent_env *env); char class_id[BUS_ID_SIZE]; /* unique to this class */ }; @@ -335,8 +331,7 @@ extern void class_device_destroy(struct class *cls, dev_t devt); struct device_type { const char *name; struct attribute_group **groups; - int (*uevent)(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size); + int (*uevent)(struct device *dev, struct kobj_uevent_env *env); void (*release)(struct device *dev); int (*suspend)(struct device * dev, pm_message_t state); int (*resume)(struct device * dev); diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 949706c33622..626bdd3c3dd9 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -29,6 +29,8 @@ #define KOBJ_NAME_LEN 20 #define UEVENT_HELPER_PATH_LEN 256 +#define UEVENT_NUM_ENVP 32 /* number of env pointers */ +#define UEVENT_BUFFER_SIZE 2048 /* buffer for the variables */ /* path to the userspace helper executed on an event */ extern char uevent_helper[]; @@ -111,11 +113,18 @@ struct kobj_type { struct attribute ** default_attrs; }; +struct kobj_uevent_env { + char *envp[UEVENT_NUM_ENVP]; + int envp_idx; + char buf[UEVENT_BUFFER_SIZE]; + int buflen; +}; + struct kset_uevent_ops { int (*filter)(struct kset *kset, struct kobject *kobj); const char *(*name)(struct kset *kset, struct kobject *kobj); - int (*uevent)(struct kset *kset, struct kobject *kobj, char **envp, - int num_envp, char *buffer, int buffer_size); + int (*uevent)(struct kset *kset, struct kobject *kobj, + struct kobj_uevent_env *env); }; /* @@ -275,10 +284,8 @@ int kobject_uevent(struct kobject *kobj, enum kobject_action action); int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, char *envp[]); -int add_uevent_var(char **envp, int num_envp, int *cur_index, - char *buffer, int buffer_size, int *cur_len, - const char *format, ...) - __attribute__((format (printf, 7, 8))); +int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) + __attribute__((format (printf, 2, 3))); #else static inline int kobject_uevent(struct kobject *kobj, enum kobject_action action) { return 0; } @@ -287,9 +294,7 @@ static inline int kobject_uevent_env(struct kobject *kobj, char *envp[]) { return 0; } -static inline int add_uevent_var(char **envp, int num_envp, int *cur_index, - char *buffer, int buffer_size, int *cur_len, - const char *format, ...) +static inline int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) { return 0; } #endif diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c index e06a8dcec0f0..7d8aeb301635 100644 --- a/lib/kobject_uevent.c +++ b/lib/kobject_uevent.c @@ -22,8 +22,6 @@ #include #include -#define BUFFER_SIZE 2048 /* buffer for the variables */ -#define NUM_ENVP 32 /* number of env pointers */ /* the strings here must match the enum in include/linux/kobject.h */ const char *kobject_actions[] = { @@ -54,31 +52,21 @@ static struct sock *uevent_sock; * corresponding error when it fails. */ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, - char *envp_ext[]) + char *envp_ext[]) { - char **envp; - char *buffer; - char *scratch; - const char *action_string; + struct kobj_uevent_env *env; + const char *action_string = kobject_actions[action]; const char *devpath = NULL; const char *subsystem; struct kobject *top_kobj; struct kset *kset; struct kset_uevent_ops *uevent_ops; u64 seq; - char *seq_buff; int i = 0; int retval = 0; - int j; pr_debug("%s\n", __FUNCTION__); - action_string = kobject_actions[action]; - if (!action_string) { - pr_debug("kobject attempted to send uevent without action_string!\n"); - return -EINVAL; - } - /* search the kset we belong to */ top_kobj = kobj; while (!top_kobj->kset && top_kobj->parent) { @@ -92,7 +80,7 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, kset = top_kobj->kset; uevent_ops = kset->uevent_ops; - /* skip the event, if the filter returns zero. */ + /* skip the event, if the filter returns zero. */ if (uevent_ops && uevent_ops->filter) if (!uevent_ops->filter(kset, kobj)) { pr_debug("kobject filter function caused the event to drop!\n"); @@ -109,18 +97,11 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, return 0; } - /* environment index */ - envp = kzalloc(NUM_ENVP * sizeof (char *), GFP_KERNEL); - if (!envp) + /* environment buffer */ + env = kzalloc(sizeof(struct kobj_uevent_env), GFP_KERNEL); + if (!env) return -ENOMEM; - /* environment values */ - buffer = kmalloc(BUFFER_SIZE, GFP_KERNEL); - if (!buffer) { - retval = -ENOMEM; - goto exit; - } - /* complete object path */ devpath = kobject_get_path(kobj, GFP_KERNEL); if (!devpath) { @@ -128,29 +109,29 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, goto exit; } - /* event environemnt for helper process only */ - envp[i++] = "HOME=/"; - envp[i++] = "PATH=/sbin:/bin:/usr/sbin:/usr/bin"; - /* default keys */ - scratch = buffer; - envp [i++] = scratch; - scratch += sprintf(scratch, "ACTION=%s", action_string) + 1; - envp [i++] = scratch; - scratch += sprintf (scratch, "DEVPATH=%s", devpath) + 1; - envp [i++] = scratch; - scratch += sprintf(scratch, "SUBSYSTEM=%s", subsystem) + 1; - for (j = 0; envp_ext && envp_ext[j]; j++) - envp[i++] = envp_ext[j]; - /* just reserve the space, overwrite it after kset call has returned */ - envp[i++] = seq_buff = scratch; - scratch += strlen("SEQNUM=18446744073709551616") + 1; + retval = add_uevent_var(env, "ACTION=%s", action_string); + if (retval) + goto exit; + retval = add_uevent_var(env, "DEVPATH=%s", devpath); + if (retval) + goto exit; + retval = add_uevent_var(env, "SUBSYSTEM=%s", subsystem); + if (retval) + goto exit; + + /* keys passed in from the caller */ + if (envp_ext) { + for (i = 0; envp_ext[i]; i++) { + retval = add_uevent_var(env, envp_ext[i]); + if (retval) + goto exit; + } + } /* let the kset specific function add its stuff */ if (uevent_ops && uevent_ops->uevent) { - retval = uevent_ops->uevent(kset, kobj, - &envp[i], NUM_ENVP - i, scratch, - BUFFER_SIZE - (scratch - buffer)); + retval = uevent_ops->uevent(kset, kobj, env); if (retval) { pr_debug ("%s - uevent() returned %d\n", __FUNCTION__, retval); @@ -158,11 +139,13 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, } } - /* we will send an event, request a new sequence number */ + /* we will send an event, so request a new sequence number */ spin_lock(&sequence_lock); seq = ++uevent_seqnum; spin_unlock(&sequence_lock); - sprintf(seq_buff, "SEQNUM=%llu", (unsigned long long)seq); + retval = add_uevent_var(env, "SEQNUM=%llu", (unsigned long long)seq); + if (retval) + goto exit; #if defined(CONFIG_NET) /* send netlink message */ @@ -172,17 +155,19 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, /* allocate message with the maximum possible size */ len = strlen(action_string) + strlen(devpath) + 2; - skb = alloc_skb(len + BUFFER_SIZE, GFP_KERNEL); + skb = alloc_skb(len + env->buflen, GFP_KERNEL); if (skb) { + char *scratch; + /* add header */ scratch = skb_put(skb, len); sprintf(scratch, "%s@%s", action_string, devpath); /* copy keys to our continuous event payload buffer */ - for (i = 2; envp[i]; i++) { - len = strlen(envp[i]) + 1; + for (i = 0; i < env->envp_idx; i++) { + len = strlen(env->envp[i]) + 1; scratch = skb_put(skb, len); - strcpy(scratch, envp[i]); + strcpy(scratch, env->envp[i]); } NETLINK_CB(skb).dst_group = 1; @@ -198,13 +183,19 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, argv [0] = uevent_helper; argv [1] = (char *)subsystem; argv [2] = NULL; - call_usermodehelper (argv[0], argv, envp, UMH_WAIT_EXEC); + retval = add_uevent_var(env, "HOME=/"); + if (retval) + goto exit; + retval = add_uevent_var(env, "PATH=/sbin:/bin:/usr/sbin:/usr/bin"); + if (retval) + goto exit; + + call_usermodehelper (argv[0], argv, env->envp, UMH_WAIT_EXEC); } exit: kfree(devpath); - kfree(buffer); - kfree(envp); + kfree(env); return retval; } @@ -227,52 +218,38 @@ int kobject_uevent(struct kobject *kobj, enum kobject_action action) EXPORT_SYMBOL_GPL(kobject_uevent); /** - * add_uevent_var - helper for creating event variables - * @envp: Pointer to table of environment variables, as passed into - * uevent() method. - * @num_envp: Number of environment variable slots available, as - * passed into uevent() method. - * @cur_index: Pointer to current index into @envp. It should be - * initialized to 0 before the first call to add_uevent_var(), - * and will be incremented on success. - * @buffer: Pointer to buffer for environment variables, as passed - * into uevent() method. - * @buffer_size: Length of @buffer, as passed into uevent() method. - * @cur_len: Pointer to current length of space used in @buffer. - * Should be initialized to 0 before the first call to - * add_uevent_var(), and will be incremented on success. - * @format: Format for creating environment variable (of the form - * "XXX=%x") for snprintf(). + * add_uevent_var - add key value string to the environment buffer + * @env: environment buffer structure + * @format: printf format for the key=value pair * * Returns 0 if environment variable was added successfully or -ENOMEM * if no space was available. */ -int add_uevent_var(char **envp, int num_envp, int *cur_index, - char *buffer, int buffer_size, int *cur_len, - const char *format, ...) +int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) { va_list args; + int len; - /* - * We check against num_envp - 1 to make sure there is at - * least one slot left after we return, since kobject_uevent() - * needs to set the last slot to NULL. - */ - if (*cur_index >= num_envp - 1) + if (env->envp_idx >= ARRAY_SIZE(env->envp)) { + printk(KERN_ERR "add_uevent_var: too many keys\n"); + WARN_ON(1); return -ENOMEM; - - envp[*cur_index] = buffer + *cur_len; + } va_start(args, format); - *cur_len += vsnprintf(envp[*cur_index], - max(buffer_size - *cur_len, 0), - format, args) + 1; + len = vsnprintf(&env->buf[env->buflen], + sizeof(env->buf) - env->buflen, + format, args); va_end(args); - if (*cur_len > buffer_size) + if (len >= (sizeof(env->buf) - env->buflen)) { + printk(KERN_ERR "add_uevent_var: buffer size too small\n"); + WARN_ON(1); return -ENOMEM; + } - (*cur_index)++; + env->envp[env->envp_idx++] = &env->buf[env->buflen]; + env->buflen += len + 1; return 0; } EXPORT_SYMBOL_GPL(add_uevent_var); diff --git a/net/atm/atm_sysfs.c b/net/atm/atm_sysfs.c index f094a0879c16..9ef07eda2c43 100644 --- a/net/atm/atm_sysfs.c +++ b/net/atm/atm_sysfs.c @@ -105,10 +105,9 @@ static struct class_device_attribute *atm_attrs[] = { NULL }; -static int atm_uevent(struct class_device *cdev, char **envp, int num_envp, char *buf, int size) +static int atm_uevent(struct class_device *cdev, struct kobj_uevent_env *env) { struct atm_dev *adev; - int i = 0, len = 0; if (!cdev) return -ENODEV; @@ -117,11 +116,9 @@ static int atm_uevent(struct class_device *cdev, char **envp, int num_envp, char if (!adev) return -ENODEV; - if (add_uevent_var(envp, num_envp, &i, buf, size, &len, - "NAME=%s%d", adev->type, adev->number)) + if (add_uevent_var(env, "NAME=%s%d", adev->type, adev->number)) return -ENOMEM; - envp[i] = NULL; return 0; } diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 909a03d6c0e9..6628e457ddc0 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -396,28 +396,22 @@ static struct attribute_group wireless_group = { #endif /* CONFIG_SYSFS */ #ifdef CONFIG_HOTPLUG -static int netdev_uevent(struct device *d, char **envp, - int num_envp, char *buf, int size) +static int netdev_uevent(struct device *d, struct kobj_uevent_env *env) { struct net_device *dev = to_net_dev(d); - int retval, len = 0, i = 0; + int retval; /* pass interface to uevent. */ - retval = add_uevent_var(envp, num_envp, &i, - buf, size, &len, - "INTERFACE=%s", dev->name); + retval = add_uevent_var(env, "INTERFACE=%s", dev->name); if (retval) goto exit; /* pass ifindex to uevent. * ifindex is useful as it won't change (interface name may change) * and is what RtNetlink uses natively. */ - retval = add_uevent_var(envp, num_envp, &i, - buf, size, &len, - "IFINDEX=%d", dev->ifindex); + retval = add_uevent_var(env, "IFINDEX=%d", dev->ifindex); exit: - envp[i] = NULL; return retval; } #endif diff --git a/net/wireless/sysfs.c b/net/wireless/sysfs.c index 2d5d2255a27c..29f820e18251 100644 --- a/net/wireless/sysfs.c +++ b/net/wireless/sysfs.c @@ -53,8 +53,7 @@ static void wiphy_dev_release(struct device *dev) } #ifdef CONFIG_HOTPLUG -static int wiphy_uevent(struct device *dev, char **envp, - int num_envp, char *buf, int size) +static int wiphy_uevent(struct device *dev, struct kobj_uevent_env *env) { /* TODO, we probably need stuff here */ return 0; diff --git a/sound/aoa/soundbus/core.c b/sound/aoa/soundbus/core.c index 64d163914335..f84f3e505788 100644 --- a/sound/aoa/soundbus/core.c +++ b/sound/aoa/soundbus/core.c @@ -56,13 +56,12 @@ static int soundbus_probe(struct device *dev) } -static int soundbus_uevent(struct device *dev, char **envp, int num_envp, - char *buffer, int buffer_size) +static int soundbus_uevent(struct device *dev, struct kobj_uevent_env *env) { struct soundbus_dev * soundbus_dev; struct of_device * of; const char *compat; - int retval = 0, i = 0, length = 0; + int retval = 0; int cplen, seen = 0; if (!dev) @@ -75,15 +74,11 @@ static int soundbus_uevent(struct device *dev, char **envp, int num_envp, of = &soundbus_dev->ofdev; /* stuff we want to pass to /sbin/hotplug */ - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_NAME=%s", of->node->name); + retval = add_uevent_var(env, "OF_NAME=%s", of->node->name); if (retval) return retval; - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_TYPE=%s", of->node->type); + retval = add_uevent_var(env, "OF_TYPE=%s", of->node->type); if (retval) return retval; @@ -93,27 +88,19 @@ static int soundbus_uevent(struct device *dev, char **envp, int num_envp, compat = of_get_property(of->node, "compatible", &cplen); while (compat && cplen > 0) { - int tmp = length; - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_COMPATIBLE_%d=%s", seen, compat); + int tmp = env->buflen; + retval = add_uevent_var(env, "OF_COMPATIBLE_%d=%s", seen, compat); if (retval) return retval; - compat += length - tmp; - cplen -= length - tmp; + compat += env->buflen - tmp; + cplen -= env->buflen - tmp; seen += 1; } - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "OF_COMPATIBLE_N=%d", seen); + retval = add_uevent_var(env, "OF_COMPATIBLE_N=%d", seen); if (retval) return retval; - retval = add_uevent_var(envp, num_envp, &i, - buffer, buffer_size, &length, - "MODALIAS=%s", soundbus_dev->modalias); - - envp[i] = NULL; + retval = add_uevent_var(env, "MODALIAS=%s", soundbus_dev->modalias); return retval; } -- cgit v1.2.3 From 6a8d8abb6e4497ae4132a9b1f0a956ea501f1c46 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Wed, 15 Aug 2007 15:38:28 +0200 Subject: Driver core: add CONFIG_UEVENT_HELPER_PATH The kernel creates a process for every event that is send, even when there is no binary it could execute. We are needlessly creating around 200-300 failing processes during early bootup, until we have the chance to disable it from userspace. This change allows us to disable /sbin/hotplug entirely, if you want to, by setting UEVENT_HELPER_PATH="" in the kernel config. Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- drivers/base/Kconfig | 8 ++++++++ lib/kobject_uevent.c | 2 +- 2 files changed, 9 insertions(+), 1 deletion(-) (limited to 'drivers/base') diff --git a/drivers/base/Kconfig b/drivers/base/Kconfig index 5d6312e33490..d7da109c24fd 100644 --- a/drivers/base/Kconfig +++ b/drivers/base/Kconfig @@ -1,5 +1,13 @@ menu "Generic Driver Options" +config UEVENT_HELPER_PATH + string "path to uevent helper" + depends on HOTPLUG + default "/sbin/hotplug" + help + Path to uevent helper program forked by the kernel for + every uevent. + config STANDALONE bool "Select only drivers that don't need compile-time external firmware" if EXPERIMENTAL default y diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c index 7d8aeb301635..5ccda460262c 100644 --- a/lib/kobject_uevent.c +++ b/lib/kobject_uevent.c @@ -35,7 +35,7 @@ const char *kobject_actions[] = { #if defined(CONFIG_HOTPLUG) u64 uevent_seqnum; -char uevent_helper[UEVENT_HELPER_PATH_LEN] = "/sbin/hotplug"; +char uevent_helper[UEVENT_HELPER_PATH_LEN] = CONFIG_UEVENT_HELPER_PATH; static DEFINE_SPINLOCK(sequence_lock); #if defined(CONFIG_NET) static struct sock *uevent_sock; -- cgit v1.2.3 From d6b05b84edf590ff872de6310ec20d60b5b37dd2 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 12 Sep 2007 15:06:57 -0700 Subject: Driver core: remove subsys_set_kset This macro is only used by the driver core and is held over from when we had subsystems. It is not needed anymore. Signed-off-by: Greg Kroah-Hartman --- drivers/base/bus.c | 3 ++- drivers/base/class.c | 2 +- include/linux/kobject.h | 13 ------------- 3 files changed, 3 insertions(+), 15 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/bus.c b/drivers/base/bus.c index ff850d1b0d92..625f7e694521 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -823,7 +823,8 @@ int bus_register(struct bus_type * bus) if (retval) goto out; - subsys_set_kset(bus, bus_subsys); + bus->subsys.kobj.kset = &bus_subsys; + retval = subsystem_register(&bus->subsys); if (retval) goto out; diff --git a/drivers/base/class.c b/drivers/base/class.c index ecd6336bffea..cf9cf666f472 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -149,7 +149,7 @@ int class_register(struct class * cls) if (error) return error; - subsys_set_kset(cls, class_subsys); + cls->subsys.kobj.kset = &class_subsys; error = subsystem_register(&cls->subsys); if (!error) { diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 626bdd3c3dd9..0713799fde29 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -241,19 +241,6 @@ extern struct kset hypervisor_subsys; #define kset_set_kset_s(obj,subsys) \ (obj)->kset.kobj.kset = &(subsys) -/** - * subsys_set_kset(obj,subsys) - set kset for subsystem - * @obj: ptr to some object type. - * @_subsys: a subsystem object (not a ptr). - * - * Can be used for any object type with an embedded ->subsys. - * Sets the kset of @obj's kobject to @subsys.kset. This makes - * the object a member of that kset. - */ - -#define subsys_set_kset(obj,_subsys) \ - (obj)->subsys.kobj.kset = &(_subsys) - extern void subsystem_init(struct kset *); extern int __must_check subsystem_register(struct kset *); extern void subsystem_unregister(struct kset *); -- cgit v1.2.3 From 27f20e5e4e60a7f28010eeb34399fe0cc9a1a235 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 12 Sep 2007 15:06:57 -0700 Subject: Driver core: remove kset_set_kset_s This macro is only used by the driver core and is held over from when we had subsystems. It is not needed anymore. Signed-off-by: Greg Kroah-Hartman --- drivers/base/sys.c | 2 +- include/linux/kobject.h | 14 -------------- 2 files changed, 1 insertion(+), 15 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/sys.c b/drivers/base/sys.c index 18febe26caa1..7ad893167823 100644 --- a/drivers/base/sys.c +++ b/drivers/base/sys.c @@ -139,7 +139,7 @@ int sysdev_class_register(struct sysdev_class * cls) kobject_name(&cls->kset.kobj)); INIT_LIST_HEAD(&cls->drivers); cls->kset.kobj.parent = &system_subsys.kobj; - kset_set_kset_s(cls, system_subsys); + cls->kset.kobj.kset = &system_subsys; return kset_register(&cls->kset); } diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 0713799fde29..ee61ef27e799 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -227,20 +227,6 @@ extern struct kset hypervisor_subsys; #define kobj_set_kset_s(obj,subsys) \ (obj)->kobj.kset = &(subsys) -/** - * kset_set_kset_s(obj,subsys) - set kset for embedded kset. - * @obj: ptr to some object type. - * @subsys: a subsystem object (not a ptr). - * - * Can be used for any object type with an embedded ->kset. - * Sets the kset of @obj's embedded kobject (via its embedded - * kset) to @subsys.kset. This makes @obj a member of that - * kset. - */ - -#define kset_set_kset_s(obj,subsys) \ - (obj)->kset.kobj.kset = &(subsys) - extern void subsystem_init(struct kset *); extern int __must_check subsystem_register(struct kset *); extern void subsystem_unregister(struct kset *); -- cgit v1.2.3 From 6e9d930d167f8957a12a80515f3c417a98296378 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 12 Sep 2007 15:06:57 -0700 Subject: Driver core: remove subsys_put() There are no more subsystems, it's a kset now so remove the function and the only two users, which are in the driver core. Signed-off-by: Greg Kroah-Hartman --- drivers/base/bus.c | 2 +- drivers/base/class.c | 2 +- include/linux/kobject.h | 5 ----- lib/kobject.c | 2 +- 4 files changed, 3 insertions(+), 8 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 625f7e694521..2f775936544b 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -734,7 +734,7 @@ struct bus_type *get_bus(struct bus_type *bus) void put_bus(struct bus_type * bus) { - subsys_put(&bus->subsys); + kset_put(&bus->subsys); } diff --git a/drivers/base/class.c b/drivers/base/class.c index cf9cf666f472..50e34132576c 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -100,7 +100,7 @@ static struct class *class_get(struct class *cls) static void class_put(struct class * cls) { if (cls) - subsys_put(&cls->subsys); + kset_put(&cls->subsys); } diff --git a/include/linux/kobject.h b/include/linux/kobject.h index ee61ef27e799..45effedff315 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -238,11 +238,6 @@ static inline struct kset *subsys_get(struct kset *s) return NULL; } -static inline void subsys_put(struct kset *s) -{ - kset_put(s); -} - struct subsys_attribute { struct attribute attr; ssize_t (*show)(struct kset *, char *); diff --git a/lib/kobject.c b/lib/kobject.c index 4b08e0ff95c8..0aa4e906916a 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -681,7 +681,7 @@ int subsys_create_file(struct kset *s, struct subsys_attribute *a) if (subsys_get(s)) { error = sysfs_create_file(&s->kobj, &a->attr); - subsys_put(s); + kset_put(s); } return error; } -- cgit v1.2.3 From 1ef4cfac01fb5e98900f5bdb2a722aac1daff11b Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 12 Sep 2007 15:06:57 -0700 Subject: Driver core: remove subsys_get() There are no more subsystems, it's a kset now so remove the function and the only two users, which are in the driver core. Signed-off-by: Greg Kroah-Hartman --- drivers/base/bus.c | 2 +- drivers/base/class.c | 2 +- include/linux/kobject.h | 7 ------- lib/kobject.c | 2 +- 4 files changed, 3 insertions(+), 10 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 2f775936544b..bc38085dbb10 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -728,7 +728,7 @@ EXPORT_SYMBOL_GPL(device_reprobe); struct bus_type *get_bus(struct bus_type *bus) { - return bus ? container_of(subsys_get(&bus->subsys), + return bus ? container_of(kset_get(&bus->subsys), struct bus_type, subsys) : NULL; } diff --git a/drivers/base/class.c b/drivers/base/class.c index 50e34132576c..3e9b04c30fb9 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -93,7 +93,7 @@ void class_remove_file(struct class * cls, const struct class_attribute * attr) static struct class *class_get(struct class *cls) { if (cls) - return container_of(subsys_get(&cls->subsys), struct class, subsys); + return container_of(kset_get(&cls->subsys), struct class, subsys); return NULL; } diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 45effedff315..c0fb535d7acd 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -231,13 +231,6 @@ extern void subsystem_init(struct kset *); extern int __must_check subsystem_register(struct kset *); extern void subsystem_unregister(struct kset *); -static inline struct kset *subsys_get(struct kset *s) -{ - if (s) - return kset_get(s); - return NULL; -} - struct subsys_attribute { struct attribute attr; ssize_t (*show)(struct kset *, char *); diff --git a/lib/kobject.c b/lib/kobject.c index 0aa4e906916a..1326041213dd 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -679,7 +679,7 @@ int subsys_create_file(struct kset *s, struct subsys_attribute *a) if (!s || !a) return -EINVAL; - if (subsys_get(s)) { + if (kset_get(s)) { error = sysfs_create_file(&s->kobj, &a->attr); kset_put(s); } -- cgit v1.2.3 From fc1ede5888ab8a9b3e7f8567b945beed35222885 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 13 Sep 2007 02:53:13 -0700 Subject: Driver core: remove put_bus() put_bus() should not be globally visable as it is not used by anything other than drivers/base/bus.c. This patch removes the visability of it, and renames it to match all of the other *_put() functions in the kernel. Signed-off-by: Greg Kroah-Hartman --- drivers/base/base.h | 1 - drivers/base/bus.c | 29 ++++++++++++++--------------- 2 files changed, 14 insertions(+), 16 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/base.h b/drivers/base/base.h index 47eb02d9f1af..cebc7e754574 100644 --- a/drivers/base/base.h +++ b/drivers/base/base.h @@ -19,7 +19,6 @@ extern int bus_add_device(struct device * dev); extern void bus_attach_device(struct device * dev); extern void bus_remove_device(struct device * dev); extern struct bus_type *get_bus(struct bus_type * bus); -extern void put_bus(struct bus_type * bus); extern int bus_add_driver(struct device_driver *); extern void bus_remove_driver(struct device_driver *); diff --git a/drivers/base/bus.c b/drivers/base/bus.c index bc38085dbb10..4f53b758ac2b 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -30,6 +30,11 @@ static int __must_check bus_rescan_devices_helper(struct device *dev, void *data); +static void bus_put(struct bus_type *bus) +{ + kset_put(&bus->subsys); +} + static ssize_t drv_attr_show(struct kobject * kobj, struct attribute * attr, char * buf) { @@ -124,7 +129,7 @@ int bus_create_file(struct bus_type * bus, struct bus_attribute * attr) int error; if (get_bus(bus)) { error = sysfs_create_file(&bus->subsys.kobj, &attr->attr); - put_bus(bus); + bus_put(bus); } else error = -EINVAL; return error; @@ -134,7 +139,7 @@ void bus_remove_file(struct bus_type * bus, struct bus_attribute * attr) { if (get_bus(bus)) { sysfs_remove_file(&bus->subsys.kobj, &attr->attr); - put_bus(bus); + bus_put(bus); } } @@ -186,7 +191,7 @@ static ssize_t driver_unbind(struct device_driver *drv, err = count; } put_device(dev); - put_bus(bus); + bus_put(bus); return err; } static DRIVER_ATTR(unbind, S_IWUSR, NULL, driver_unbind); @@ -219,7 +224,7 @@ static ssize_t driver_bind(struct device_driver *drv, err = -ENODEV; } put_device(dev); - put_bus(bus); + bus_put(bus); return err; } static DRIVER_ATTR(bind, S_IWUSR, NULL, driver_bind); @@ -459,7 +464,7 @@ out_subsys: out_id: device_remove_attrs(bus, dev); out_put: - put_bus(dev->bus); + bus_put(dev->bus); return error; } @@ -509,7 +514,7 @@ void bus_remove_device(struct device * dev) } pr_debug("bus %s: remove device %s\n", dev->bus->name, dev->bus_id); device_release_driver(dev); - put_bus(dev->bus); + bus_put(dev->bus); } } @@ -646,7 +651,7 @@ int bus_add_driver(struct device_driver *drv) out_unregister: kobject_unregister(&drv->kobj); out_put_bus: - put_bus(bus); + bus_put(bus); return error; } @@ -671,7 +676,7 @@ void bus_remove_driver(struct device_driver * drv) driver_detach(drv); module_remove_driver(drv); kobject_unregister(&drv->kobj); - put_bus(drv->bus); + bus_put(drv->bus); } @@ -732,12 +737,6 @@ struct bus_type *get_bus(struct bus_type *bus) struct bus_type, subsys) : NULL; } -void put_bus(struct bus_type * bus) -{ - kset_put(&bus->subsys); -} - - /** * find_bus - locate bus by name. * @name: name of bus. @@ -874,7 +873,7 @@ out: * @bus: bus. * * Unregister the child subsystems and the bus itself. - * Finally, we call put_bus() to release the refcount + * Finally, we call bus_put() to release the refcount */ void bus_unregister(struct bus_type * bus) { -- cgit v1.2.3 From 5901d0145c6b9e791bacd049eea11c9db9a3006e Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 13 Sep 2007 02:53:13 -0700 Subject: Driver core: remove get_bus() get_bus() should not be globally visable as it is not used by anything other than drivers/base/bus.c. This patch removes the visability of it, and renames it to match all of the other *_get() functions in the kernel. Signed-off-by: Greg Kroah-Hartman --- drivers/base/base.h | 1 - drivers/base/bus.c | 24 ++++++++++++------------ 2 files changed, 12 insertions(+), 13 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/base.h b/drivers/base/base.h index cebc7e754574..10b2fb6c9ce6 100644 --- a/drivers/base/base.h +++ b/drivers/base/base.h @@ -18,7 +18,6 @@ extern int attribute_container_init(void); extern int bus_add_device(struct device * dev); extern void bus_attach_device(struct device * dev); extern void bus_remove_device(struct device * dev); -extern struct bus_type *get_bus(struct bus_type * bus); extern int bus_add_driver(struct device_driver *); extern void bus_remove_driver(struct device_driver *); diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 4f53b758ac2b..0a8d075f3e6c 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -30,6 +30,12 @@ static int __must_check bus_rescan_devices_helper(struct device *dev, void *data); +static struct bus_type *bus_get(struct bus_type *bus) +{ + return bus ? container_of(kset_get(&bus->subsys), + struct bus_type, subsys) : NULL; +} + static void bus_put(struct bus_type *bus) { kset_put(&bus->subsys); @@ -127,7 +133,7 @@ static struct sysfs_ops bus_sysfs_ops = { int bus_create_file(struct bus_type * bus, struct bus_attribute * attr) { int error; - if (get_bus(bus)) { + if (bus_get(bus)) { error = sysfs_create_file(&bus->subsys.kobj, &attr->attr); bus_put(bus); } else @@ -137,7 +143,7 @@ int bus_create_file(struct bus_type * bus, struct bus_attribute * attr) void bus_remove_file(struct bus_type * bus, struct bus_attribute * attr) { - if (get_bus(bus)) { + if (bus_get(bus)) { sysfs_remove_file(&bus->subsys.kobj, &attr->attr); bus_put(bus); } @@ -177,7 +183,7 @@ static int driver_helper(struct device *dev, void *data) static ssize_t driver_unbind(struct device_driver *drv, const char *buf, size_t count) { - struct bus_type *bus = get_bus(drv->bus); + struct bus_type *bus = bus_get(drv->bus); struct device *dev; int err = -ENODEV; @@ -204,7 +210,7 @@ static DRIVER_ATTR(unbind, S_IWUSR, NULL, driver_unbind); static ssize_t driver_bind(struct device_driver *drv, const char *buf, size_t count) { - struct bus_type *bus = get_bus(drv->bus); + struct bus_type *bus = bus_get(drv->bus); struct device *dev; int err = -ENODEV; @@ -435,7 +441,7 @@ static inline void remove_deprecated_bus_links(struct device *dev) { } */ int bus_add_device(struct device * dev) { - struct bus_type * bus = get_bus(dev->bus); + struct bus_type * bus = bus_get(dev->bus); int error = 0; if (bus) { @@ -611,7 +617,7 @@ static inline void remove_probe_files(struct bus_type *bus) {} */ int bus_add_driver(struct device_driver *drv) { - struct bus_type * bus = get_bus(drv->bus); + struct bus_type * bus = bus_get(drv->bus); int error = 0; if (!bus) @@ -731,12 +737,6 @@ int device_reprobe(struct device *dev) } EXPORT_SYMBOL_GPL(device_reprobe); -struct bus_type *get_bus(struct bus_type *bus) -{ - return bus ? container_of(kset_get(&bus->subsys), - struct bus_type, subsys) : NULL; -} - /** * find_bus - locate bus by name. * @name: name of bus. -- cgit v1.2.3 From 5c5daf657cb5f963a38413f2852279d7a3843144 Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Sun, 12 Aug 2007 20:43:55 +0200 Subject: Driver core: exclude kobject_uevent.c for !CONFIG_HOTPLUG Move uevent specific logic from the core into kobject_uevent.c, which does no longer require to link the unused string array if hotplug is not compiled in. Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- drivers/base/core.c | 18 ++++------------ include/linux/kobject.h | 10 ++++++--- lib/Makefile | 3 ++- lib/kobject_uevent.c | 57 ++++++++++++++++++++++++++++++++++++++----------- 4 files changed, 57 insertions(+), 31 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/core.c b/drivers/base/core.c index d487c032dc4a..65de221e3bfa 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -234,13 +234,11 @@ static ssize_t show_uevent(struct device *dev, struct device_attribute *attr, /* search the kset, the device belongs to */ top_kobj = &dev->kobj; - if (!top_kobj->kset && top_kobj->parent) { - do { - top_kobj = top_kobj->parent; - } while (!top_kobj->kset && top_kobj->parent); - } + while (!top_kobj->kset && top_kobj->parent) + top_kobj = top_kobj->parent; if (!top_kobj->kset) goto out; + kset = top_kobj->kset; if (!kset->uevent_ops || !kset->uevent_ops->uevent) goto out; @@ -270,17 +268,9 @@ out: static ssize_t store_uevent(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { - size_t len = count; enum kobject_action action; - if (len && buf[len-1] == '\n') - len--; - - for (action = 0; action < KOBJ_MAX; action++) { - if (strncmp(kobject_actions[action], buf, len) != 0) - continue; - if (kobject_actions[action][len] != '\0') - continue; + if (kobject_action_type(buf, count, &action) == 0) { kobject_uevent(&dev->kobj, action); goto out; } diff --git a/include/linux/kobject.h b/include/linux/kobject.h index 56f5eaf10ea9..0777b3f57ae6 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -58,9 +58,6 @@ enum kobject_action { KOBJ_MAX }; -/* The list of strings defining the valid kobject actions as specified above */ -extern const char *kobject_actions[]; - struct kobject { const char * k_name; struct kref kref; @@ -241,6 +238,9 @@ int kobject_uevent_env(struct kobject *kobj, enum kobject_action action, int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) __attribute__((format (printf, 2, 3))); + +int kobject_action_type(const char *buf, size_t count, + enum kobject_action *type); #else static inline int kobject_uevent(struct kobject *kobj, enum kobject_action action) { return 0; } @@ -251,6 +251,10 @@ static inline int kobject_uevent_env(struct kobject *kobj, static inline int add_uevent_var(struct kobj_uevent_env *env, const char *format, ...) { return 0; } + +static inline int kobject_action_type(const char *buf, size_t count, + enum kobject_action *type) +{ return -EINVAL; } #endif #endif /* __KERNEL__ */ diff --git a/lib/Makefile b/lib/Makefile index 4f3f3e256501..6c4ea33bb2cb 100644 --- a/lib/Makefile +++ b/lib/Makefile @@ -10,7 +10,7 @@ lib-y := ctype.o string.o vsprintf.o cmdline.o \ lib-$(CONFIG_MMU) += ioremap.o lib-$(CONFIG_SMP) += cpumask.o -lib-y += kobject.o kref.o kobject_uevent.o klist.o +lib-y += kobject.o kref.o klist.o obj-y += div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \ bust_spinlocks.o hexdump.o kasprintf.o @@ -20,6 +20,7 @@ CFLAGS_kobject.o += -DDEBUG CFLAGS_kobject_uevent.o += -DDEBUG endif +lib-$(CONFIG_HOTPLUG) += kobject_uevent.o obj-$(CONFIG_GENERIC_IOMAP) += iomap.o obj-$(CONFIG_HAS_IOMEM) += iomap_copy.o devres.o obj-$(CONFIG_CHECK_SIGNATURE) += check_signature.o diff --git a/lib/kobject_uevent.c b/lib/kobject_uevent.c index 5ccda460262c..a8efb48dca54 100644 --- a/lib/kobject_uevent.c +++ b/lib/kobject_uevent.c @@ -23,17 +23,6 @@ #include -/* the strings here must match the enum in include/linux/kobject.h */ -const char *kobject_actions[] = { - "add", - "remove", - "change", - "move", - "online", - "offline", -}; - -#if defined(CONFIG_HOTPLUG) u64 uevent_seqnum; char uevent_helper[UEVENT_HELPER_PATH_LEN] = CONFIG_UEVENT_HELPER_PATH; static DEFINE_SPINLOCK(sequence_lock); @@ -41,6 +30,50 @@ static DEFINE_SPINLOCK(sequence_lock); static struct sock *uevent_sock; #endif +/* the strings here must match the enum in include/linux/kobject.h */ +static const char *kobject_actions[] = { + [KOBJ_ADD] = "add", + [KOBJ_REMOVE] = "remove", + [KOBJ_CHANGE] = "change", + [KOBJ_MOVE] = "move", + [KOBJ_ONLINE] = "online", + [KOBJ_OFFLINE] = "offline", +}; + +/** + * kobject_action_type - translate action string to numeric type + * + * @buf: buffer containing the action string, newline is ignored + * @len: length of buffer + * @type: pointer to the location to store the action type + * + * Returns 0 if the action string was recognized. + */ +int kobject_action_type(const char *buf, size_t count, + enum kobject_action *type) +{ + enum kobject_action action; + int ret = -EINVAL; + + if (count && buf[count-1] == '\n') + count--; + + if (!count) + goto out; + + for (action = 0; action < ARRAY_SIZE(kobject_actions); action++) { + if (strncmp(kobject_actions[action], buf, count) != 0) + continue; + if (kobject_actions[action][count] != '\0') + continue; + *type = action; + ret = 0; + break; + } +out: + return ret; +} + /** * kobject_uevent_env - send an uevent with environmental data * @@ -270,5 +303,3 @@ static int __init kobject_uevent_init(void) postcore_initcall(kobject_uevent_init); #endif - -#endif /* CONFIG_HOTPLUG */ -- cgit v1.2.3 From 7ac1cf4a87f446c130f7d8a4fe7e519f532a11de Mon Sep 17 00:00:00 2001 From: Kay Sievers Date: Sun, 12 Aug 2007 20:43:55 +0200 Subject: Driver core: add uevent file for bus and driver This has been in the SuSE kernels for some time now. Signed-off-by: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- drivers/base/bus.c | 35 +++++++++++++++++++++++++++++++++++ 1 file changed, 35 insertions(+) (limited to 'drivers/base') diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 0a8d075f3e6c..6768a01e210b 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -610,6 +610,17 @@ static inline int add_probe_files(struct bus_type *bus) { return 0; } static inline void remove_probe_files(struct bus_type *bus) {} #endif +static ssize_t driver_uevent_store(struct device_driver *drv, + const char *buf, size_t count) +{ + enum kobject_action action; + + if (kobject_action_type(buf, count, &action) == 0) + kobject_uevent(&drv->kobj, action); + return count; +} +static DRIVER_ATTR(uevent, S_IWUSR, NULL, driver_uevent_store); + /** * bus_add_driver - Add a driver to the bus. * @drv: driver. @@ -640,6 +651,11 @@ int bus_add_driver(struct device_driver *drv) klist_add_tail(&drv->knode_bus, &bus->klist_drivers); module_add_driver(drv->owner, drv); + error = driver_create_file(drv, &driver_attr_uevent); + if (error) { + printk(KERN_ERR "%s: uevent attr (%s) failed\n", + __FUNCTION__, drv->name); + } error = driver_add_attrs(bus, drv); if (error) { /* How the hell do we get out of this pickle? Give up */ @@ -677,6 +693,7 @@ void bus_remove_driver(struct device_driver * drv) remove_bind_files(drv); driver_remove_attrs(drv->bus, drv); + driver_remove_file(drv, &driver_attr_uevent); klist_remove(&drv->knode_bus); pr_debug("bus %s: remove driver %s\n", drv->bus->name, drv->name); driver_detach(drv); @@ -804,6 +821,17 @@ static void klist_devices_put(struct klist_node *n) put_device(dev); } +static ssize_t bus_uevent_store(struct bus_type *bus, + const char *buf, size_t count) +{ + enum kobject_action action; + + if (kobject_action_type(buf, count, &action) == 0) + kobject_uevent(&bus->subsys.kobj, action); + return count; +} +static BUS_ATTR(uevent, S_IWUSR, NULL, bus_uevent_store); + /** * bus_register - register a bus with the system. * @bus: bus. @@ -828,6 +856,10 @@ int bus_register(struct bus_type * bus) if (retval) goto out; + retval = bus_create_file(bus, &bus_attr_uevent); + if (retval) + goto bus_uevent_fail; + kobject_set_name(&bus->devices.kobj, "devices"); bus->devices.kobj.parent = &bus->subsys.kobj; retval = kset_register(&bus->devices); @@ -863,6 +895,8 @@ bus_probe_files_fail: bus_drivers_fail: kset_unregister(&bus->devices); bus_devices_fail: + bus_remove_file(bus, &bus_attr_uevent); +bus_uevent_fail: subsystem_unregister(&bus->subsys); out: return retval; @@ -882,6 +916,7 @@ void bus_unregister(struct bus_type * bus) remove_probe_files(bus); kset_unregister(&bus->drivers); kset_unregister(&bus->devices); + bus_remove_file(bus, &bus_attr_uevent); subsystem_unregister(&bus->subsys); } -- cgit v1.2.3 From 109f0e93b6b728f03c1eb4af02bc25d71b646c59 Mon Sep 17 00:00:00 2001 From: Markus Rechberger Date: Mon, 13 Aug 2007 19:20:43 +0200 Subject: Fix Firmware class name collision following patch fixes the i2c name collision with i2c-dev. http://mcentral.de/wiki/index.php/Bugtracker#i2c_core_problem This issue has been experienced with em28xx and saa7133 based devices. I discussed that problem with Jean Delvare a while ago and he proposed to add a prefix to the class name. Signed-off-by: Markus Rechberger Acked-by: Marcel Holtmann Signed-off-by: Greg Kroah-Hartman --- drivers/base/firmware_class.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/firmware_class.c b/drivers/base/firmware_class.c index 4a1b9bfc5471..0295855a3eef 100644 --- a/drivers/base/firmware_class.c +++ b/drivers/base/firmware_class.c @@ -292,8 +292,7 @@ firmware_class_timeout(u_long data) static inline void fw_setup_device_id(struct device *f_dev, struct device *dev) { - /* XXX warning we should watch out for name collisions */ - strlcpy(f_dev->bus_id, dev->bus_id, BUS_ID_SIZE); + snprintf(f_dev->bus_id, BUS_ID_SIZE, "firmware-%s", dev->bus_id); } static int fw_register_device(struct device **dev_p, const char *fw_name, -- cgit v1.2.3 From b4d1eb2ccecb76bce4c2125c5a3e77753fcfaeb0 Mon Sep 17 00:00:00 2001 From: Adrian Bunk Date: Fri, 10 Aug 2007 13:51:09 -0700 Subject: drivers/base/power/: make 2 functions static suspend_device() and resume_device() can now become static. Signed-off-by: Adrian Bunk Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- drivers/base/power/power.h | 6 ------ drivers/base/power/resume.c | 2 +- drivers/base/power/suspend.c | 2 +- 3 files changed, 2 insertions(+), 8 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h index 8ba0830cbc03..49e64dbcce96 100644 --- a/drivers/base/power/power.h +++ b/drivers/base/power/power.h @@ -55,12 +55,6 @@ extern void dpm_sysfs_remove(struct device *); extern void dpm_resume(void); extern void dpm_power_up(void); -extern int resume_device(struct device *); - -/* - * suspend.c - */ -extern int suspend_device(struct device *, pm_message_t); #else /* CONFIG_PM_SLEEP */ diff --git a/drivers/base/power/resume.c b/drivers/base/power/resume.c index 00fd84ae6e66..67948bac9938 100644 --- a/drivers/base/power/resume.c +++ b/drivers/base/power/resume.c @@ -20,7 +20,7 @@ * */ -int resume_device(struct device * dev) +static int resume_device(struct device * dev) { int error = 0; diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c index 26df9b231737..204517afb15e 100644 --- a/drivers/base/power/suspend.c +++ b/drivers/base/power/suspend.c @@ -54,7 +54,7 @@ suspend_device_dbg(struct device *dev, pm_message_t state, char *info) * @state: Power state device is entering. */ -int suspend_device(struct device * dev, pm_message_t state) +static int suspend_device(struct device * dev, pm_message_t state) { int error = 0; -- cgit v1.2.3 From 44b760a825fae65629fb04b1deeab68c6bef5c50 Mon Sep 17 00:00:00 2001 From: Akinobu Mita Date: Sun, 19 Aug 2007 16:51:14 +0900 Subject: sysdev: remove global sysdev drivers list No one uses sysdev_drivers. Because no one calls sysdev_driver_register with NULL class. And it is difficult to imagine that someone want to implement a global sysdev driver which is called with all sys_device on any kind of sysdev_class. So this patch removes global sysdev_drivers list and update comments for this change. Signed-off-by: Akinobu Mita Cc: Tejun Heo Acked-by: Cornelia Huck Signed-off-by: Greg Kroah-Hartman --- drivers/base/sys.c | 71 +++++++++++------------------------------------------- 1 file changed, 14 insertions(+), 57 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/sys.c b/drivers/base/sys.c index 7ad893167823..ac7ff6d0c6e5 100644 --- a/drivers/base/sys.c +++ b/drivers/base/sys.c @@ -153,25 +153,22 @@ void sysdev_class_unregister(struct sysdev_class * cls) EXPORT_SYMBOL_GPL(sysdev_class_register); EXPORT_SYMBOL_GPL(sysdev_class_unregister); - -static LIST_HEAD(sysdev_drivers); static DEFINE_MUTEX(sysdev_drivers_lock); /** * sysdev_driver_register - Register auxillary driver - * @cls: Device class driver belongs to. + * @cls: Device class driver belongs to. * @drv: Driver. * - * If @cls is valid, then @drv is inserted into @cls->drivers to be + * @drv is inserted into @cls->drivers to be * called on each operation on devices of that class. The refcount * of @cls is incremented. - * Otherwise, @drv is inserted into sysdev_drivers, and called for - * each device. */ -int sysdev_driver_register(struct sysdev_class * cls, - struct sysdev_driver * drv) +int sysdev_driver_register(struct sysdev_class *cls, struct sysdev_driver *drv) { + int err = 0; + mutex_lock(&sysdev_drivers_lock); if (cls && kset_get(&cls->kset)) { list_add_tail(&drv->entry, &cls->drivers); @@ -182,10 +179,13 @@ int sysdev_driver_register(struct sysdev_class * cls, list_for_each_entry(dev, &cls->kset.list, kobj.entry) drv->add(dev); } - } else - list_add_tail(&drv->entry, &sysdev_drivers); + } else { + err = -EINVAL; + printk(KERN_ERR "%s: invalid device class\n", __FUNCTION__); + WARN_ON(1); + } mutex_unlock(&sysdev_drivers_lock); - return 0; + return err; } @@ -251,12 +251,6 @@ int sysdev_register(struct sys_device * sysdev) * code that should have called us. */ - /* Notify global drivers */ - list_for_each_entry(drv, &sysdev_drivers, entry) { - if (drv->add) - drv->add(sysdev); - } - /* Notify class auxillary drivers */ list_for_each_entry(drv, &cls->drivers, entry) { if (drv->add) @@ -272,11 +266,6 @@ void sysdev_unregister(struct sys_device * sysdev) struct sysdev_driver * drv; mutex_lock(&sysdev_drivers_lock); - list_for_each_entry(drv, &sysdev_drivers, entry) { - if (drv->remove) - drv->remove(sysdev); - } - list_for_each_entry(drv, &sysdev->cls->drivers, entry) { if (drv->remove) drv->remove(sysdev); @@ -293,7 +282,7 @@ void sysdev_unregister(struct sys_device * sysdev) * * Loop over each class of system devices, and the devices in each * of those classes. For each device, we call the shutdown method for - * each driver registered for the device - the globals, the auxillaries, + * each driver registered for the device - the auxillaries, * and the class driver. * * Note: The list is iterated in reverse order, so that we shut down @@ -320,13 +309,7 @@ void sysdev_shutdown(void) struct sysdev_driver * drv; pr_debug(" %s\n", kobject_name(&sysdev->kobj)); - /* Call global drivers first. */ - list_for_each_entry(drv, &sysdev_drivers, entry) { - if (drv->shutdown) - drv->shutdown(sysdev); - } - - /* Call auxillary drivers next. */ + /* Call auxillary drivers first */ list_for_each_entry(drv, &cls->drivers, entry) { if (drv->shutdown) drv->shutdown(sysdev); @@ -354,12 +337,6 @@ static void __sysdev_resume(struct sys_device *dev) if (drv->resume) drv->resume(dev); } - - /* Call global drivers. */ - list_for_each_entry(drv, &sysdev_drivers, entry) { - if (drv->resume) - drv->resume(dev); - } } /** @@ -393,16 +370,7 @@ int sysdev_suspend(pm_message_t state) list_for_each_entry(sysdev, &cls->kset.list, kobj.entry) { pr_debug(" %s\n", kobject_name(&sysdev->kobj)); - /* Call global drivers first. */ - list_for_each_entry(drv, &sysdev_drivers, entry) { - if (drv->suspend) { - ret = drv->suspend(sysdev, state); - if (ret) - goto gbl_driver; - } - } - - /* Call auxillary drivers next. */ + /* Call auxillary drivers first */ list_for_each_entry(drv, &cls->drivers, entry) { if (drv->suspend) { ret = drv->suspend(sysdev, state); @@ -436,18 +404,7 @@ aux_driver: if (err_drv->resume) err_drv->resume(sysdev); } - drv = NULL; -gbl_driver: - if (drv) - printk(KERN_ERR "sysdev driver suspend failed for %s\n", - kobject_name(&sysdev->kobj)); - list_for_each_entry(err_drv, &sysdev_drivers, entry) { - if (err_drv == drv) - break; - if (err_drv->resume) - err_drv->resume(sysdev); - } /* resume other sysdevs in current class */ list_for_each_entry(err_dev, &cls->kset.list, kobj.entry) { if (err_dev == sysdev) -- cgit v1.2.3 From 1359555eb77d240b7c1d7ee75bb07e89e89770e4 Mon Sep 17 00:00:00 2001 From: Jean Delvare Date: Sun, 9 Sep 2007 12:54:16 +0200 Subject: Driver core: Make platform_device.id an int While platform_device.id is a u32, platform_device_add() handles "-1" as a special id value. This has potential for confusion and bugs. Making it an int instead should prevent problems from happening in the future. Signed-off-by: Jean Delvare Signed-off-by: Greg Kroah-Hartman --- drivers/base/platform.c | 7 ++++--- include/linux/platform_device.h | 7 ++++--- 2 files changed, 8 insertions(+), 6 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/platform.c b/drivers/base/platform.c index a2e3910196e0..fb5609241482 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -161,7 +161,7 @@ static void platform_device_release(struct device *dev) * Create a platform device object which can have other objects attached * to it, and which will have attached objects freed when it is released. */ -struct platform_device *platform_device_alloc(const char *name, unsigned int id) +struct platform_device *platform_device_alloc(const char *name, int id) { struct platform_object *pa; @@ -245,7 +245,8 @@ int platform_device_add(struct platform_device *pdev) pdev->dev.bus = &platform_bus_type; if (pdev->id != -1) - snprintf(pdev->dev.bus_id, BUS_ID_SIZE, "%s.%u", pdev->name, pdev->id); + snprintf(pdev->dev.bus_id, BUS_ID_SIZE, "%s.%d", pdev->name, + pdev->id); else strlcpy(pdev->dev.bus_id, pdev->name, BUS_ID_SIZE); @@ -359,7 +360,7 @@ EXPORT_SYMBOL_GPL(platform_device_unregister); * the Linux driver model. In particular, when such drivers are built * as modules, they can't be "hotplugged". */ -struct platform_device *platform_device_register_simple(char *name, unsigned int id, +struct platform_device *platform_device_register_simple(char *name, int id, struct resource *res, unsigned int num) { struct platform_device *pdev; diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index 8bbd459eafdc..e80804316cdb 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -15,7 +15,7 @@ struct platform_device { const char * name; - u32 id; + int id; struct device dev; u32 num_resources; struct resource * resource; @@ -35,9 +35,10 @@ extern struct resource *platform_get_resource_byname(struct platform_device *, u extern int platform_get_irq_byname(struct platform_device *, char *); extern int platform_add_devices(struct platform_device **, int); -extern struct platform_device *platform_device_register_simple(char *, unsigned int, struct resource *, unsigned int); +extern struct platform_device *platform_device_register_simple(char *, int id, + struct resource *, unsigned int); -extern struct platform_device *platform_device_alloc(const char *name, unsigned int id); +extern struct platform_device *platform_device_alloc(const char *name, int id); extern int platform_device_add_resources(struct platform_device *pdev, struct resource *res, unsigned int num); extern int platform_device_add_data(struct platform_device *pdev, const void *data, size_t size); extern int platform_device_add(struct platform_device *pdev); -- cgit v1.2.3 From e4bc16621d82ee1fd3685dcbf889a7c49891847b Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Wed, 26 Sep 2007 11:12:00 -0700 Subject: driver core: remove subsystem_init() There is only one user of it, and it is only a wrapper for kset_init(). Signed-off-by: Greg Kroah-Hartman --- Documentation/kobject.txt | 1 - drivers/base/class.c | 2 +- include/linux/kobject.h | 1 - lib/kobject.c | 5 ----- 4 files changed, 1 insertion(+), 8 deletions(-) (limited to 'drivers/base') diff --git a/Documentation/kobject.txt b/Documentation/kobject.txt index 5e7aca261359..ca86a885ad8f 100644 --- a/Documentation/kobject.txt +++ b/Documentation/kobject.txt @@ -238,7 +238,6 @@ kobj_set_kset_s(obj,subsys) - Assumes that obj->kobj exists, and is a struct kobject. - Sets the kset of that kobject to the kset . -void subsystem_init(struct kset *s); int subsystem_register(struct kset *s); void subsystem_unregister(struct kset *s); diff --git a/drivers/base/class.c b/drivers/base/class.c index 3e9b04c30fb9..5b9cf06eab8f 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -861,7 +861,7 @@ int __init classes_init(void) /* ick, this is ugly, the things we go through to keep from showing up * in sysfs... */ - subsystem_init(&class_obj_subsys); + kset_init(&class_obj_subsys); if (!class_obj_subsys.kobj.parent) class_obj_subsys.kobj.parent = &class_obj_subsys.kobj; return 0; diff --git a/include/linux/kobject.h b/include/linux/kobject.h index a8a84fcccbc0..05cc5b2ddfff 100644 --- a/include/linux/kobject.h +++ b/include/linux/kobject.h @@ -217,7 +217,6 @@ extern struct kset hypervisor_subsys; #define kobj_set_kset_s(obj,subsys) \ (obj)->kobj.kset = &(subsys) -extern void subsystem_init(struct kset *); extern int __must_check subsystem_register(struct kset *); extern void subsystem_unregister(struct kset *); diff --git a/lib/kobject.c b/lib/kobject.c index fc6db6b4bfc5..b7e0646f7977 100644 --- a/lib/kobject.c +++ b/lib/kobject.c @@ -617,11 +617,6 @@ struct kobject * kset_find_obj(struct kset * kset, const char * name) return ret; } -void subsystem_init(struct kset *s) -{ - kset_init(s); -} - int subsystem_register(struct kset *s) { return kset_register(s); -- cgit v1.2.3 From adc56808f32e15fa0c0fcd5ecb4b30989076ef2b Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 11 Oct 2007 10:47:49 -0600 Subject: Driver core: rename ktype_class This makes it a bit more sane when trying to figure out how to clean up the ktype mess. Based on a larger patch from Kay Sievers Cc: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- drivers/base/class.c | 10 +++++----- 1 file changed, 5 insertions(+), 5 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/class.c b/drivers/base/class.c index 5b9cf06eab8f..a863bb091e11 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -65,13 +65,13 @@ static struct sysfs_ops class_sysfs_ops = { .store = class_attr_store, }; -static struct kobj_type ktype_class = { +static struct kobj_type class_ktype = { .sysfs_ops = &class_sysfs_ops, .release = class_release, }; /* Hotplug events for classes go to the class_obj subsys */ -static decl_subsys(class, &ktype_class, NULL); +static decl_subsys(class, &class_ktype, NULL); int class_create_file(struct class * cls, const struct class_attribute * attr) @@ -323,7 +323,7 @@ static void class_dev_release(struct kobject * kobj) } } -static struct kobj_type ktype_class_device = { +static struct kobj_type class_device_ktype = { .sysfs_ops = &class_dev_sysfs_ops, .release = class_dev_release, }; @@ -332,7 +332,7 @@ static int class_uevent_filter(struct kset *kset, struct kobject *kobj) { struct kobj_type *ktype = get_ktype(kobj); - if (ktype == &ktype_class_device) { + if (ktype == &class_device_ktype) { struct class_device *class_dev = to_class_dev(kobj); if (class_dev->class) return 1; @@ -452,7 +452,7 @@ static struct kset_uevent_ops class_uevent_ops = { .uevent = class_uevent, }; -static decl_subsys(class_obj, &ktype_class_device, &class_uevent_ops); +static decl_subsys(class_obj, &class_device_ktype, &class_uevent_ops); static int class_device_add_attrs(struct class_device * cd) -- cgit v1.2.3 From 8f4afc410b8d2be49f34835b6bbe788f50471b02 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 11 Oct 2007 10:47:49 -0600 Subject: Driver core: rename ktype_device This makes it a bit more sane when trying to figure out how to clean up the ktype mess. Based on a larger patch from Kay Sievers Cc: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- drivers/base/core.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/core.c b/drivers/base/core.c index 65de221e3bfa..c1343414d285 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -108,7 +108,7 @@ static void device_release(struct kobject * kobj) } } -static struct kobj_type ktype_device = { +static struct kobj_type device_ktype = { .release = device_release, .sysfs_ops = &dev_sysfs_ops, }; @@ -118,7 +118,7 @@ static int dev_uevent_filter(struct kset *kset, struct kobject *kobj) { struct kobj_type *ktype = get_ktype(kobj); - if (ktype == &ktype_device) { + if (ktype == &device_ktype) { struct device *dev = to_dev(kobj); if (dev->uevent_suppress) return 0; @@ -405,7 +405,7 @@ static struct device_attribute devt_attr = * devices_subsys - structure to be registered with kobject core. */ -decl_subsys(devices, &ktype_device, &device_uevent_ops); +decl_subsys(devices, &device_ktype, &device_uevent_ops); /** -- cgit v1.2.3 From a1148fb03f3c5d0bb5e6641234c2251a15741361 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Thu, 11 Oct 2007 10:47:49 -0600 Subject: Driver core: rename ktype_driver This makes it a bit more sane when trying to figure out how to clean up the ktype mess. Based on a larger patch from Kay Sievers Cc: Kay Sievers Signed-off-by: Greg Kroah-Hartman --- drivers/base/bus.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'drivers/base') diff --git a/drivers/base/bus.c b/drivers/base/bus.c index 6768a01e210b..9a19b071c573 100644 --- a/drivers/base/bus.c +++ b/drivers/base/bus.c @@ -89,7 +89,7 @@ static void driver_release(struct kobject * kobj) */ } -static struct kobj_type ktype_driver = { +static struct kobj_type driver_ktype = { .sysfs_ops = &driver_sysfs_ops, .release = driver_release, }; @@ -868,7 +868,7 @@ int bus_register(struct bus_type * bus) kobject_set_name(&bus->drivers.kobj, "drivers"); bus->drivers.kobj.parent = &bus->subsys.kobj; - bus->drivers.ktype = &ktype_driver; + bus->drivers.ktype = &driver_ktype; retval = kset_register(&bus->drivers); if (retval) goto bus_drivers_fail; -- cgit v1.2.3 From cd59abfcc441b2abb4cf2cd62c1eb0f02a60e8dd Mon Sep 17 00:00:00 2001 From: Alan Stern Date: Fri, 21 Sep 2007 15:36:56 -0400 Subject: PM: merge device power-management source files This patch (as993) merges the suspend.c and resume.c files in drivers/base/power into main.c, making some public symbols private. Signed-off-by: Alan Stern Acked-by: Rafael J. Wysocki Signed-off-by: Greg Kroah-Hartman --- drivers/base/power/Makefile | 2 +- drivers/base/power/main.c | 344 ++++++++++++++++++++++++++++++++++++++++++- drivers/base/power/power.h | 32 +--- drivers/base/power/resume.c | 149 ------------------- drivers/base/power/suspend.c | 210 -------------------------- 5 files changed, 343 insertions(+), 394 deletions(-) delete mode 100644 drivers/base/power/resume.c delete mode 100644 drivers/base/power/suspend.c (limited to 'drivers/base') diff --git a/drivers/base/power/Makefile b/drivers/base/power/Makefile index 9caeaea753a3..a803733c839e 100644 --- a/drivers/base/power/Makefile +++ b/drivers/base/power/Makefile @@ -1,5 +1,5 @@ obj-y := shutdown.o -obj-$(CONFIG_PM_SLEEP) += main.o suspend.o resume.o sysfs.o +obj-$(CONFIG_PM_SLEEP) += main.o sysfs.o obj-$(CONFIG_PM_TRACE) += trace.o ifeq ($(CONFIG_DEBUG_DRIVER),y) diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index eb9f38d0aa58..0ab4ab21f564 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -20,19 +20,24 @@ */ #include +#include #include +#include +#include +#include "../base.h" #include "power.h" LIST_HEAD(dpm_active); -LIST_HEAD(dpm_off); -LIST_HEAD(dpm_off_irq); +static LIST_HEAD(dpm_off); +static LIST_HEAD(dpm_off_irq); -DEFINE_MUTEX(dpm_mtx); -DEFINE_MUTEX(dpm_list_mtx); +static DEFINE_MUTEX(dpm_mtx); +static DEFINE_MUTEX(dpm_list_mtx); int (*platform_enable_wakeup)(struct device *dev, int is_on); + int device_pm_add(struct device *dev) { int error; @@ -61,3 +66,334 @@ void device_pm_remove(struct device *dev) } +/*------------------------- Resume routines -------------------------*/ + +/** + * resume_device - Restore state for one device. + * @dev: Device. + * + */ + +static int resume_device(struct device * dev) +{ + int error = 0; + + TRACE_DEVICE(dev); + TRACE_RESUME(0); + + down(&dev->sem); + + if (dev->bus && dev->bus->resume) { + dev_dbg(dev,"resuming\n"); + error = dev->bus->resume(dev); + } + + if (!error && dev->type && dev->type->resume) { + dev_dbg(dev,"resuming\n"); + error = dev->type->resume(dev); + } + + if (!error && dev->class && dev->class->resume) { + dev_dbg(dev,"class resume\n"); + error = dev->class->resume(dev); + } + + up(&dev->sem); + + TRACE_RESUME(error); + return error; +} + + +static int resume_device_early(struct device * dev) +{ + int error = 0; + + TRACE_DEVICE(dev); + TRACE_RESUME(0); + if (dev->bus && dev->bus->resume_early) { + dev_dbg(dev,"EARLY resume\n"); + error = dev->bus->resume_early(dev); + } + TRACE_RESUME(error); + return error; +} + +/* + * Resume the devices that have either not gone through + * the late suspend, or that did go through it but also + * went through the early resume + */ +static void dpm_resume(void) +{ + mutex_lock(&dpm_list_mtx); + while(!list_empty(&dpm_off)) { + struct list_head * entry = dpm_off.next; + struct device * dev = to_device(entry); + + get_device(dev); + list_move_tail(entry, &dpm_active); + + mutex_unlock(&dpm_list_mtx); + resume_device(dev); + mutex_lock(&dpm_list_mtx); + put_device(dev); + } + mutex_unlock(&dpm_list_mtx); +} + + +/** + * device_resume - Restore state of each device in system. + * + * Walk the dpm_off list, remove each entry, resume the device, + * then add it to the dpm_active list. + */ + +void device_resume(void) +{ + might_sleep(); + mutex_lock(&dpm_mtx); + dpm_resume(); + mutex_unlock(&dpm_mtx); +} + +EXPORT_SYMBOL_GPL(device_resume); + + +/** + * dpm_power_up - Power on some devices. + * + * Walk the dpm_off_irq list and power each device up. This + * is used for devices that required they be powered down with + * interrupts disabled. As devices are powered on, they are moved + * to the dpm_active list. + * + * Interrupts must be disabled when calling this. + */ + +static void dpm_power_up(void) +{ + while(!list_empty(&dpm_off_irq)) { + struct list_head * entry = dpm_off_irq.next; + struct device * dev = to_device(entry); + + list_move_tail(entry, &dpm_off); + resume_device_early(dev); + } +} + + +/** + * device_power_up - Turn on all devices that need special attention. + * + * Power on system devices then devices that required we shut them down + * with interrupts disabled. + * Called with interrupts disabled. + */ + +void device_power_up(void) +{ + sysdev_resume(); + dpm_power_up(); +} + +EXPORT_SYMBOL_GPL(device_power_up); + + +/*------------------------- Suspend routines -------------------------*/ + +/* + * The entries in the dpm_active list are in a depth first order, simply + * because children are guaranteed to be discovered after parents, and + * are inserted at the back of the list on discovery. + * + * All list on the suspend path are done in reverse order, so we operate + * on the leaves of the device tree (or forests, depending on how you want + * to look at it ;) first. As nodes are removed from the back of the list, + * they are inserted into the front of their destintation lists. + * + * Things are the reverse on the resume path - iterations are done in + * forward order, and nodes are inserted at the back of their destination + * lists. This way, the ancestors will be accessed before their descendents. + */ + +static inline char *suspend_verb(u32 event) +{ + switch (event) { + case PM_EVENT_SUSPEND: return "suspend"; + case PM_EVENT_FREEZE: return "freeze"; + case PM_EVENT_PRETHAW: return "prethaw"; + default: return "(unknown suspend event)"; + } +} + + +static void +suspend_device_dbg(struct device *dev, pm_message_t state, char *info) +{ + dev_dbg(dev, "%s%s%s\n", info, suspend_verb(state.event), + ((state.event == PM_EVENT_SUSPEND) && device_may_wakeup(dev)) ? + ", may wakeup" : ""); +} + +/** + * suspend_device - Save state of one device. + * @dev: Device. + * @state: Power state device is entering. + */ + +static int suspend_device(struct device * dev, pm_message_t state) +{ + int error = 0; + + down(&dev->sem); + if (dev->power.power_state.event) { + dev_dbg(dev, "PM: suspend %d-->%d\n", + dev->power.power_state.event, state.event); + } + + if (dev->class && dev->class->suspend) { + suspend_device_dbg(dev, state, "class "); + error = dev->class->suspend(dev, state); + suspend_report_result(dev->class->suspend, error); + } + + if (!error && dev->type && dev->type->suspend) { + suspend_device_dbg(dev, state, "type "); + error = dev->type->suspend(dev, state); + suspend_report_result(dev->type->suspend, error); + } + + if (!error && dev->bus && dev->bus->suspend) { + suspend_device_dbg(dev, state, ""); + error = dev->bus->suspend(dev, state); + suspend_report_result(dev->bus->suspend, error); + } + up(&dev->sem); + return error; +} + + +/* + * This is called with interrupts off, only a single CPU + * running. We can't acquire a mutex or semaphore (and we don't + * need the protection) + */ +static int suspend_device_late(struct device *dev, pm_message_t state) +{ + int error = 0; + + if (dev->bus && dev->bus->suspend_late) { + suspend_device_dbg(dev, state, "LATE "); + error = dev->bus->suspend_late(dev, state); + suspend_report_result(dev->bus->suspend_late, error); + } + return error; +} + +/** + * device_suspend - Save state and stop all devices in system. + * @state: Power state to put each device in. + * + * Walk the dpm_active list, call ->suspend() for each device, and move + * it to the dpm_off list. + * + * (For historical reasons, if it returns -EAGAIN, that used to mean + * that the device would be called again with interrupts disabled. + * These days, we use the "suspend_late()" callback for that, so we + * print a warning and consider it an error). + * + * If we get a different error, try and back out. + * + * If we hit a failure with any of the devices, call device_resume() + * above to bring the suspended devices back to life. + * + */ + +int device_suspend(pm_message_t state) +{ + int error = 0; + + might_sleep(); + mutex_lock(&dpm_mtx); + mutex_lock(&dpm_list_mtx); + while (!list_empty(&dpm_active) && error == 0) { + struct list_head * entry = dpm_active.prev; + struct device * dev = to_device(entry); + + get_device(dev); + mutex_unlock(&dpm_list_mtx); + + error = suspend_device(dev, state); + + mutex_lock(&dpm_list_mtx); + + /* Check if the device got removed */ + if (!list_empty(&dev->power.entry)) { + /* Move it to the dpm_off list */ + if (!error) + list_move(&dev->power.entry, &dpm_off); + } + if (error) + printk(KERN_ERR "Could not suspend device %s: " + "error %d%s\n", + kobject_name(&dev->kobj), error, + error == -EAGAIN ? " (please convert to suspend_late)" : ""); + put_device(dev); + } + mutex_unlock(&dpm_list_mtx); + if (error) + dpm_resume(); + + mutex_unlock(&dpm_mtx); + return error; +} + +EXPORT_SYMBOL_GPL(device_suspend); + +/** + * device_power_down - Shut down special devices. + * @state: Power state to enter. + * + * Walk the dpm_off_irq list, calling ->power_down() for each device that + * couldn't power down the device with interrupts enabled. When we're + * done, power down system devices. + */ + +int device_power_down(pm_message_t state) +{ + int error = 0; + struct device * dev; + + while (!list_empty(&dpm_off)) { + struct list_head * entry = dpm_off.prev; + + dev = to_device(entry); + error = suspend_device_late(dev, state); + if (error) + goto Error; + list_move(&dev->power.entry, &dpm_off_irq); + } + + error = sysdev_suspend(state); + Done: + return error; + Error: + printk(KERN_ERR "Could not power down device %s: " + "error %d\n", kobject_name(&dev->kobj), error); + dpm_power_up(); + goto Done; +} + +EXPORT_SYMBOL_GPL(device_power_down); + +void __suspend_report_result(const char *function, void *fn, int ret) +{ + if (ret) { + printk(KERN_ERR "%s(): ", function); + print_fn_descriptor_symbol("%s() returns ", (unsigned long)fn); + printk("%d\n", ret); + } +} +EXPORT_SYMBOL_GPL(__suspend_report_result); diff --git a/drivers/base/power/power.h b/drivers/base/power/power.h index 49e64dbcce96..5c4efd493fa5 100644 --- a/drivers/base/power/power.h +++ b/drivers/base/power/power.h @@ -11,32 +11,11 @@ extern void device_shutdown(void); * main.c */ -/* - * Used to synchronize global power management operations. - */ -extern struct mutex dpm_mtx; - -/* - * Used to serialize changes to the dpm_* lists. - */ -extern struct mutex dpm_list_mtx; - -/* - * The PM lists. - */ -extern struct list_head dpm_active; -extern struct list_head dpm_off; -extern struct list_head dpm_off_irq; - - -static inline struct dev_pm_info * to_pm_info(struct list_head * entry) -{ - return container_of(entry, struct dev_pm_info, entry); -} +extern struct list_head dpm_active; /* The active device list */ static inline struct device * to_device(struct list_head * entry) { - return container_of(to_pm_info(entry), struct device, power); + return container_of(entry, struct device, power.entry); } extern int device_pm_add(struct device *); @@ -49,13 +28,6 @@ extern void device_pm_remove(struct device *); extern int dpm_sysfs_add(struct device *); extern void dpm_sysfs_remove(struct device *); -/* - * resume.c - */ - -extern void dpm_resume(void); -extern void dpm_power_up(void); - #else /* CONFIG_PM_SLEEP */ diff --git a/drivers/base/power/resume.c b/drivers/base/power/resume.c deleted file mode 100644 index 67948bac9938..000000000000 --- a/drivers/base/power/resume.c +++ /dev/null @@ -1,149 +0,0 @@ -/* - * resume.c - Functions for waking devices up. - * - * Copyright (c) 2003 Patrick Mochel - * Copyright (c) 2003 Open Source Development Labs - * - * This file is released under the GPLv2 - * - */ - -#include -#include -#include "../base.h" -#include "power.h" - - -/** - * resume_device - Restore state for one device. - * @dev: Device. - * - */ - -static int resume_device(struct device * dev) -{ - int error = 0; - - TRACE_DEVICE(dev); - TRACE_RESUME(0); - - down(&dev->sem); - - if (dev->bus && dev->bus->resume) { - dev_dbg(dev,"resuming\n"); - error = dev->bus->resume(dev); - } - - if (!error && dev->type && dev->type->resume) { - dev_dbg(dev,"resuming\n"); - error = dev->type->resume(dev); - } - - if (!error && dev->class && dev->class->resume) { - dev_dbg(dev,"class resume\n"); - error = dev->class->resume(dev); - } - - up(&dev->sem); - - TRACE_RESUME(error); - return error; -} - - -static int resume_device_early(struct device * dev) -{ - int error = 0; - - TRACE_DEVICE(dev); - TRACE_RESUME(0); - if (dev->bus && dev->bus->resume_early) { - dev_dbg(dev,"EARLY resume\n"); - error = dev->bus->resume_early(dev); - } - TRACE_RESUME(error); - return error; -} - -/* - * Resume the devices that have either not gone through - * the late suspend, or that did go through it but also - * went through the early resume - */ -void dpm_resume(void) -{ - mutex_lock(&dpm_list_mtx); - while(!list_empty(&dpm_off)) { - struct list_head * entry = dpm_off.next; - struct device * dev = to_device(entry); - - get_device(dev); - list_move_tail(entry, &dpm_active); - - mutex_unlock(&dpm_list_mtx); - resume_device(dev); - mutex_lock(&dpm_list_mtx); - put_device(dev); - } - mutex_unlock(&dpm_list_mtx); -} - - -/** - * device_resume - Restore state of each device in system. - * - * Walk the dpm_off list, remove each entry, resume the device, - * then add it to the dpm_active list. - */ - -void device_resume(void) -{ - might_sleep(); - mutex_lock(&dpm_mtx); - dpm_resume(); - mutex_unlock(&dpm_mtx); -} - -EXPORT_SYMBOL_GPL(device_resume); - - -/** - * dpm_power_up - Power on some devices. - * - * Walk the dpm_off_irq list and power each device up. This - * is used for devices that required they be powered down with - * interrupts disabled. As devices are powered on, they are moved - * to the dpm_active list. - * - * Interrupts must be disabled when calling this. - */ - -void dpm_power_up(void) -{ - while(!list_empty(&dpm_off_irq)) { - struct list_head * entry = dpm_off_irq.next; - struct device * dev = to_device(entry); - - list_move_tail(entry, &dpm_off); - resume_device_early(dev); - } -} - - -/** - * device_power_up - Turn on all devices that need special attention. - * - * Power on system devices then devices that required we shut them down - * with interrupts disabled. - * Called with interrupts disabled. - */ - -void device_power_up(void) -{ - sysdev_resume(); - dpm_power_up(); -} - -EXPORT_SYMBOL_GPL(device_power_up); - - diff --git a/drivers/base/power/suspend.c b/drivers/base/power/suspend.c deleted file mode 100644 index 204517afb15e..000000000000 --- a/drivers/base/power/suspend.c +++ /dev/null @@ -1,210 +0,0 @@ -/* - * suspend.c - Functions for putting devices to sleep. - * - * Copyright (c) 2003 Patrick Mochel - * Copyright (c) 2003 Open Source Development Labs - * - * This file is released under the GPLv2 - * - */ - -#include -#include -#include -#include "../base.h" -#include "power.h" - -/* - * The entries in the dpm_active list are in a depth first order, simply - * because children are guaranteed to be discovered after parents, and - * are inserted at the back of the list on discovery. - * - * All list on the suspend path are done in reverse order, so we operate - * on the leaves of the device tree (or forests, depending on how you want - * to look at it ;) first. As nodes are removed from the back of the list, - * they are inserted into the front of their destintation lists. - * - * Things are the reverse on the resume path - iterations are done in - * forward order, and nodes are inserted at the back of their destination - * lists. This way, the ancestors will be accessed before their descendents. - */ - -static inline char *suspend_verb(u32 event) -{ - switch (event) { - case PM_EVENT_SUSPEND: return "suspend"; - case PM_EVENT_FREEZE: return "freeze"; - case PM_EVENT_PRETHAW: return "prethaw"; - default: return "(unknown suspend event)"; - } -} - - -static void -suspend_device_dbg(struct device *dev, pm_message_t state, char *info) -{ - dev_dbg(dev, "%s%s%s\n", info, suspend_verb(state.event), - ((state.event == PM_EVENT_SUSPEND) && device_may_wakeup(dev)) ? - ", may wakeup" : ""); -} - -/** - * suspend_device - Save state of one device. - * @dev: Device. - * @state: Power state device is entering. - */ - -static int suspend_device(struct device * dev, pm_message_t state) -{ - int error = 0; - - down(&dev->sem); - if (dev->power.power_state.event) { - dev_dbg(dev, "PM: suspend %d-->%d\n", - dev->power.power_state.event, state.event); - } - - if (dev->class && dev->class->suspend) { - suspend_device_dbg(dev, state, "class "); - error = dev->class->suspend(dev, state); - suspend_report_result(dev->class->suspend, error); - } - - if (!error && dev->type && dev->type->suspend) { - suspend_device_dbg(dev, state, "type "); - error = dev->type->suspend(dev, state); - suspend_report_result(dev->type->suspend, error); - } - - if (!error && dev->bus && dev->bus->suspend) { - suspend_device_dbg(dev, state, ""); - error = dev->bus->suspend(dev, state); - suspend_report_result(dev->bus->suspend, error); - } - up(&dev->sem); - return error; -} - - -/* - * This is called with interrupts off, only a single CPU - * running. We can't acquire a mutex or semaphore (and we don't - * need the protection) - */ -static int suspend_device_late(struct device *dev, pm_message_t state) -{ - int error = 0; - - if (dev->bus && dev->bus->suspend_late) { - suspend_device_dbg(dev, state, "LATE "); - error = dev->bus->suspend_late(dev, state); - suspend_report_result(dev->bus->suspend_late, error); - } - return error; -} - -/** - * device_suspend - Save state and stop all devices in system. - * @state: Power state to put each device in. - * - * Walk the dpm_active list, call ->suspend() for each device, and move - * it to the dpm_off list. - * - * (For historical reasons, if it returns -EAGAIN, that used to mean - * that the device would be called again with interrupts disabled. - * These days, we use the "suspend_late()" callback for that, so we - * print a warning and consider it an error). - * - * If we get a different error, try and back out. - * - * If we hit a failure with any of the devices, call device_resume() - * above to bring the suspended devices back to life. - * - */ - -int device_suspend(pm_message_t state) -{ - int error = 0; - - might_sleep(); - mutex_lock(&dpm_mtx); - mutex_lock(&dpm_list_mtx); - while (!list_empty(&dpm_active) && error == 0) { - struct list_head * entry = dpm_active.prev; - struct device * dev = to_device(entry); - - get_device(dev); - mutex_unlock(&dpm_list_mtx); - - error = suspend_device(dev, state); - - mutex_lock(&dpm_list_mtx); - - /* Check if the device got removed */ - if (!list_empty(&dev->power.entry)) { - /* Move it to the dpm_off list */ - if (!error) - list_move(&dev->power.entry, &dpm_off); - } - if (error) - printk(KERN_ERR "Could not suspend device %s: " - "error %d%s\n", - kobject_name(&dev->kobj), error, - error == -EAGAIN ? " (please convert to suspend_late)" : ""); - put_device(dev); - } - mutex_unlock(&dpm_list_mtx); - if (error) - dpm_resume(); - - mutex_unlock(&dpm_mtx); - return error; -} - -EXPORT_SYMBOL_GPL(device_suspend); - -/** - * device_power_down - Shut down special devices. - * @state: Power state to enter. - * - * Walk the dpm_off_irq list, calling ->power_down() for each device that - * couldn't power down the device with interrupts enabled. When we're - * done, power down system devices. - */ - -int device_power_down(pm_message_t state) -{ - int error = 0; - struct device * dev; - - while (!list_empty(&dpm_off)) { - struct list_head * entry = dpm_off.prev; - - dev = to_device(entry); - error = suspend_device_late(dev, state); - if (error) - goto Error; - list_move(&dev->power.entry, &dpm_off_irq); - } - - error = sysdev_suspend(state); - Done: - return error; - Error: - printk(KERN_ERR "Could not power down device %s: " - "error %d\n", kobject_name(&dev->kobj), error); - dpm_power_up(); - goto Done; -} - -EXPORT_SYMBOL_GPL(device_power_down); - -void __suspend_report_result(const char *function, void *fn, int ret) -{ - if (ret) { - printk(KERN_ERR "%s(): ", function); - print_fn_descriptor_symbol("%s() returns ", (unsigned long)fn); - printk("%d\n", ret); - } -} -EXPORT_SYMBOL_GPL(__suspend_report_result); -- cgit v1.2.3