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| author | Hyungwon Hwang <human.hwang@samsung.com> | 2015-05-28 16:25:15 +0900 |
|---|---|---|
| committer | Lee Jones <lee.jones@linaro.org> | 2015-06-23 15:47:35 +0100 |
| commit | cca0ba2df3d4000bacd9b7807d46ffafac62d53a (patch) | |
| tree | c5aec01b81c2a18ab40cdcd8cc71eb9e8b5aba00 /include/linux/backlight.h | |
| parent | cdaefccefa988495e732d85d81914fbba99f4ca6 (diff) | |
| download | lwn-cca0ba2df3d4000bacd9b7807d46ffafac62d53a.tar.gz lwn-cca0ba2df3d4000bacd9b7807d46ffafac62d53a.zip | |
backlight: Change the return type of backlight_update_status() to int
Backlight device returns the result of update_status(), but
backlight_update_status() ignores it. So the consumers cannot confirm the
result of their function call. This patch makes the result to be returned
back for consumers.
Signed-off-by: Hyungwon Hwang <human.hwang@samsung.com>
Acked-by: Jingoo Han <jingoohan1@gmail.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'include/linux/backlight.h')
| -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, |