Commit cca0ba2d authored May 28, 2015 by Hyungwon Hwang Committed by Lee Jones Jun 23, 2015

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>

parent cdaefcce

include/linux/backlight.h

+6 −2

Original line number	Diff line number	Diff line
		@@ -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,