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authorHyungwon Hwang <human.hwang@samsung.com>2015-05-28 16:25:15 +0900
committerLee Jones <lee.jones@linaro.org>2015-06-23 15:47:35 +0100
commitcca0ba2df3d4000bacd9b7807d46ffafac62d53a (patch)
treec5aec01b81c2a18ab40cdcd8cc71eb9e8b5aba00 /include/linux/backlight.h
parentcdaefccefa988495e732d85d81914fbba99f4ca6 (diff)
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.h8
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,