diff options
Diffstat (limited to 'kernel/include/linux/backlight.h')
| -rw-r--r-- | kernel/include/linux/backlight.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/kernel/include/linux/backlight.h b/kernel/include/linux/backlight.h index adb14a861..1e7a69adb 100644 --- a/kernel/include/linux/backlight.h +++ b/kernel/include/linux/backlight.h @@ -117,12 +117,16 @@ struct backlight_device { int use_count; }; -static inline void backlight_update_status(struct backlight_device *bd) +static inline int backlight_update_status(struct backlight_device *bd) { + int ret = -ENOENT; + mutex_lock(&bd->update_lock); if (bd->ops && bd->ops->update_status) - bd->ops->update_status(bd); + ret = bd->ops->update_status(bd); mutex_unlock(&bd->update_lock); + + return ret; } extern struct backlight_device *backlight_device_register(const char *name, |