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| author | Suzuki K Poulose <suzuki.poulose@arm.com> | 2019-07-23 23:18:35 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-07-30 13:07:42 +0200 |
| commit | 4495dfdd6193d9712b7b8f5d699d89d5996e6aaa (patch) | |
| tree | aa15b229fd464d03088a71c613fdf0b445c2e89b /drivers/base | |
| parent | 67843bbaf36eb087714f40e783ee78e99e9e4b86 (diff) | |
| download | lwn-4495dfdd6193d9712b7b8f5d699d89d5996e6aaa.tar.gz lwn-4495dfdd6193d9712b7b8f5d699d89d5996e6aaa.zip | |
drivers: Introduce device lookup variants by device type
Add a helper to match a device by its type and provide wrappers
for {bus/class/driver}_find_device() APIs.
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Harald Freudenberger <freude@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux-usb@vger.kernel.org
Cc: Oliver Neukum <oneukum@suse.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Tomas Winkler <tomas.winkler@intel.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Cc: Joe Perches <joe@perches.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Link: https://lore.kernel.org/r/20190723221838.12024-5-suzuki.poulose@arm.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/core.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/base/core.c b/drivers/base/core.c index e8f81a667545..3abc32b60c0a 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -2867,13 +2867,6 @@ struct device *device_create_with_groups(struct class *class, } EXPORT_SYMBOL_GPL(device_create_with_groups); -static int __match_devt(struct device *dev, const void *data) -{ - const dev_t *devt = data; - - return dev->devt == *devt; -} - /** * device_destroy - removes a device that was created with device_create() * @class: pointer to the struct class that this device was registered with @@ -2886,7 +2879,7 @@ void device_destroy(struct class *class, dev_t devt) { struct device *dev; - dev = class_find_device(class, NULL, &devt, __match_devt); + dev = class_find_device_by_devt(class, devt); if (dev) { put_device(dev); device_unregister(dev); @@ -3374,3 +3367,9 @@ int device_match_fwnode(struct device *dev, const void *fwnode) return dev_fwnode(dev) == fwnode; } EXPORT_SYMBOL_GPL(device_match_fwnode); + +int device_match_devt(struct device *dev, const void *pdevt) +{ + return dev->devt == *(dev_t *)pdevt; +} +EXPORT_SYMBOL_GPL(device_match_devt); |