msm: mdss: lock mutex before setting backlight



Backlight set function call should be protected by mutex
as this call could be called from different threads.

CRs-Fixed: 1074738
Change-Id: Ie7f8cee59b90f16f8a844d618a6f903b3e3c2f27
Signed-off-by: Abhijit Kulkarni <kabhijit@codeaurora.org>

parent 3c7400dc

drivers/video/fbdev/msm/mdss_fb.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -2702,7 +2702,9 @@ static int mdss_fb_release_all(struct fb_info *info, bool release_all)
		* enabling ahead of unblank. for some special cases like
		* adb shell stop/start.
		*/
		mutex_lock(&mfd->bl_lock);
		mdss_fb_set_backlight(mfd, 0);
		mutex_unlock(&mfd->bl_lock);

		ret = mdss_fb_blank_sub(FB_BLANK_POWERDOWN, info,
		mfd->op_enable);