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| author | Richard Purdie <rpurdie@rpsys.net> | 2007-02-08 22:53:55 +0000 |
|---|---|---|
| committer | Richard Purdie <rpurdie@rpsys.net> | 2007-02-20 08:38:45 +0000 |
| commit | 249040dc7fd391186f420fe23a9b59d357103cac (patch) | |
| tree | fa62127c1a66e752ff5f32aa53c3d986022e0851 /include/linux/backlight.h | |
| parent | 28ee086d5b36aab2931f6740e409bb0fb6c65e5f (diff) | |
| download | lwn-249040dc7fd391186f420fe23a9b59d357103cac.tar.gz lwn-249040dc7fd391186f420fe23a9b59d357103cac.zip | |
backlight: Convert semaphore -> mutex
Convert internal semaphore to a mutex
Signed-off-by: Richard Purdie <rpurdie@rpsys.net>
Diffstat (limited to 'include/linux/backlight.h')
| -rw-r--r-- | include/linux/backlight.h | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/include/linux/backlight.h b/include/linux/backlight.h index d1426b852bdf..43c6d55644b5 100644 --- a/include/linux/backlight.h +++ b/include/linux/backlight.h @@ -14,8 +14,8 @@ /* Notes on locking: * - * backlight_device->sem is an internal backlight lock protecting the props - * field and no code outside the core should need to touch it. + * backlight_device->props_lock is an internal backlight lock protecting the + * props field and no code outside the core should need to touch it. * * Access to update_status() is serialised by the update_lock mutex since * most drivers seem to need this and historically get it wrong. @@ -57,7 +57,7 @@ struct backlight_device { /* This protects the 'props' field. If 'props' is NULL, the driver that registered this device has been unloaded, and if class_get_devdata() points to something in the body of that driver, it is also invalid. */ - struct semaphore sem; + struct mutex props_lock; /* If this is NULL, the backing module is unloaded */ struct backlight_properties *props; /* Serialise access to update_status method */ |