diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-24 18:57:00 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-06-24 18:57:00 -0700 |
| commit | d59b92f93df2d545d87d2341eb0705cc926ea22a (patch) | |
| tree | 799556ab8a3a00d1b8fc1649428144d34ddb4e2b /include | |
| parent | e0456717e483bb8a9431b80a5bdc99a928b9b003 (diff) | |
| parent | cca0ba2df3d4000bacd9b7807d46ffafac62d53a (diff) | |
Merge tag 'backlight-for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight
Pull backlight updates from Lee Jones:
"Changes to existing drivers:
- supply MODULE_DEVICE_TABLE() to ensure probing
- constify struct; da9052_bl
- enable compile test; lcd_l4f00242t03, lcd_lms283fg05, backlight_gpio
- suspend/resume bugfix; lp855x_bl
- devm_gpiod_get_optional() API fixup; pwm_bl
- error handling fixup; backlight"
* tag 'backlight-for-linus-4.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
backlight: Change the return type of backlight_update_status() to int
backlight: pwm_bl: Simplify usage of devm_gpiod_get_optional
backlight: lp855x: Don't clear level on suspend/blank
backlight: Allow compile test of GPIO consumers if !GPIOLIB
video: backlight: da9052: Constify platform_device_id
gpio-backlight: Discover driver during boot time
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/backlight.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/backlight.h b/include/linux/backlight.h index adb14a8616df..1e7a69adbe6f 100644 --- a/include/linux/backlight.h +++ b/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, |