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| author | Mark McLoughlin <markmc@redhat.com> | 2008-12-15 12:58:26 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-01-06 10:44:33 -0800 |
| commit | 0aa0dc41bfd993491c2344870eee7a3b218551fb (patch) | |
| tree | bf0896c7e0bb9f5b7e6253fc15c8846b6f188d08 /include/linux/device.h | |
| parent | 7232800ba8aca1c070d43a81cc49991f230b5da1 (diff) | |
| download | lwn-0aa0dc41bfd993491c2344870eee7a3b218551fb.tar.gz lwn-0aa0dc41bfd993491c2344870eee7a3b218551fb.zip | |
driver core: add root_device_register()
Add support for allocating root device objects which group
device objects under /sys/devices directories.
Also add a sysfs 'module' symlink which points to the owner
of the root device object. This symlink will be used in virtio
to allow userspace to determine which virtio bus implementation
a given device is associated with.
[Includes suggestions from Cornelia Huck]
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/device.h')
| -rw-r--r-- | include/linux/device.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/linux/device.h b/include/linux/device.h index b97a0cf1eb05..7d9da4b4993f 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -483,6 +483,17 @@ extern int device_rename(struct device *dev, char *new_name); extern int device_move(struct device *dev, struct device *new_parent); /* + * Root device objects for grouping under /sys/devices + */ +extern struct device *__root_device_register(const char *name, + struct module *owner); +static inline struct device *root_device_register(const char *name) +{ + return __root_device_register(name, THIS_MODULE); +} +extern void root_device_unregister(struct device *root); + +/* * Manual binding of a device to driver. See drivers/base/bus.c * for information on use. */ |