backlight: Convert semaphore -> mutex

[sfrench/cifs-2.6.git] / include / linux / lcd.h

diff --git a/include/linux/lcd.h b/include/linux/lcd.h
index bfbf6552eb5158e2427032eb2ab6cea4e98073ea..46970af2ca89fc8e9c8a000883a993b54e02b2dc 100644 (file)
--- a/include/linux/lcd.h
+++ b/include/linux/lcd.h
@@ -14,7 +14,7 @@
 
 /* Notes on locking:
  *
- * lcd_device->sem is an internal backlight lock protecting the props
+ * lcd_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 set_power() is serialised by the update_lock mutex since
@@ -52,7 +52,7 @@ struct lcd_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 lcd_properties *props;
        /* Serialise access to set_power method */