From: Matthias Kaehlcke Date: Wed, 23 May 2007 21:19:42 +0000 (-0700) Subject: sysdev: use mutex instead of semaphore X-Git-Tag: v2.6.23-rc1~1107^2~56 X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=9f3f776bd9e3d52f0204db1df0914b50d6a2372e;p=linux-2.6-omap-h63xx.git 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 Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/base/sys.c b/drivers/base/sys.c index 29f1291966c..18febe26caa 100644 --- a/drivers/base/sys.c +++ b/drivers/base/sys.c @@ -21,7 +21,7 @@ #include #include #include -#include +#include #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)