Commit 546c1cab authored Feb 11, 2015 by Ping Li Committed by Benet Clark Mar 06, 2015

msm: mdss: Update ad_bl_level on first set backlight call



AD stores a backlight level in a variable for its processing
called ad_bl_level. This needs to be initialized to the actual
backlight level at the start.

Missing this initialization and doing the backlight calculation
for AD will cause an error and ad_bl_level will never be
updated to a non zero value. This change makes sure the
ad_bl_level is set to a non zero value in all cases.

Change-Id: I285332613ffcc1d6c94247b7c9bd89f054c80d4c
Signed-off-by: Ping Li <pingli@codeaurora.org>

parent 8ddc7643

drivers/video/msm/mdss/mdss_mdp_pp.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -2213,6 +2213,8 @@ static int pp_ad_calc_bl(struct msm_fb_data_type mfd, int bl_in, int bl_out,
		}

		mutex_lock(&ad->lock);
		if (!mfd->ad_bl_level)
		mfd->ad_bl_level = bl_in;
		if (!(ad->state & PP_AD_STATE_RUN)) {
		pr_debug("AD is not running.\n");
		mutex_unlock(&ad->lock);