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| author | Matthias Kaehlcke <matthias.kaehlcke@gmail.com> | 2007-05-23 23:19:42 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2007-07-12 01:09:01 +0200 |
| commit | 9f3f776bd9e3d52f0204db1df0914b50d6a2372e (patch) | |
| tree | 9f409655c2fb860fac729e88bcdb7c1f7017bc73 /drivers/base | |
| parent | Driver core: add missing kset uevent (diff) | |
| download | linux-9f3f776bd9e3d52f0204db1df0914b50d6a2372e.tar.xz linux-9f3f776bd9e3d52f0204db1df0914b50d6a2372e.zip | |
sysdev: use mutex instead of semaphore
The sysdev code use a semaphore as mutex. Use the mutex API instead of the
(binary) semaphore.
Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/base')
| -rw-r--r-- | drivers/base/sys.c | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/drivers/base/sys.c b/drivers/base/sys.c index 29f1291966c1..18febe26caa1 100644 --- a/drivers/base/sys.c +++ b/drivers/base/sys.c @@ -21,7 +21,7 @@ #include <linux/string.h> #include <linux/pm.h> #include <linux/device.h> -#include <asm/semaphore.h> +#include <linux/mutex.h> #include "base.h" @@ -155,7 +155,7 @@ EXPORT_SYMBOL_GPL(sysdev_class_unregister); static LIST_HEAD(sysdev_drivers); -static DECLARE_MUTEX(sysdev_drivers_lock); +static DEFINE_MUTEX(sysdev_drivers_lock); /** * sysdev_driver_register - Register auxillary driver @@ -172,7 +172,7 @@ static DECLARE_MUTEX(sysdev_drivers_lock); int sysdev_driver_register(struct sysdev_class * cls, struct sysdev_driver * drv) { - down(&sysdev_drivers_lock); + mutex_lock(&sysdev_drivers_lock); if (cls && kset_get(&cls->kset)) { list_add_tail(&drv->entry, &cls->drivers); @@ -184,7 +184,7 @@ int sysdev_driver_register(struct sysdev_class * cls, } } else list_add_tail(&drv->entry, &sysdev_drivers); - up(&sysdev_drivers_lock); + mutex_unlock(&sysdev_drivers_lock); return 0; } @@ -197,7 +197,7 @@ int sysdev_driver_register(struct sysdev_class * cls, void sysdev_driver_unregister(struct sysdev_class * cls, struct sysdev_driver * drv) { - down(&sysdev_drivers_lock); + mutex_lock(&sysdev_drivers_lock); list_del_init(&drv->entry); if (cls) { if (drv->remove) { @@ -207,7 +207,7 @@ void sysdev_driver_unregister(struct sysdev_class * cls, } kset_put(&cls->kset); } - up(&sysdev_drivers_lock); + mutex_unlock(&sysdev_drivers_lock); } EXPORT_SYMBOL_GPL(sysdev_driver_register); @@ -246,7 +246,7 @@ int sysdev_register(struct sys_device * sysdev) if (!error) { struct sysdev_driver * drv; - down(&sysdev_drivers_lock); + mutex_lock(&sysdev_drivers_lock); /* Generic notification is implicit, because it's that * code that should have called us. */ @@ -262,7 +262,7 @@ int sysdev_register(struct sys_device * sysdev) if (drv->add) drv->add(sysdev); } - up(&sysdev_drivers_lock); + mutex_unlock(&sysdev_drivers_lock); } return error; } @@ -271,7 +271,7 @@ void sysdev_unregister(struct sys_device * sysdev) { struct sysdev_driver * drv; - down(&sysdev_drivers_lock); + mutex_lock(&sysdev_drivers_lock); list_for_each_entry(drv, &sysdev_drivers, entry) { if (drv->remove) drv->remove(sysdev); @@ -281,7 +281,7 @@ void sysdev_unregister(struct sys_device * sysdev) if (drv->remove) drv->remove(sysdev); } - up(&sysdev_drivers_lock); + mutex_unlock(&sysdev_drivers_lock); kobject_unregister(&sysdev->kobj); } @@ -308,7 +308,7 @@ void sysdev_shutdown(void) pr_debug("Shutting Down System Devices\n"); - down(&sysdev_drivers_lock); + mutex_lock(&sysdev_drivers_lock); list_for_each_entry_reverse(cls, &system_subsys.list, kset.kobj.entry) { struct sys_device * sysdev; @@ -337,7 +337,7 @@ void sysdev_shutdown(void) cls->shutdown(sysdev); } } - up(&sysdev_drivers_lock); + mutex_unlock(&sysdev_drivers_lock); } static void __sysdev_resume(struct sys_device *dev) |