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msm: mdss: Avoid NULL mixer during partial update ROI setup

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Under MDSS suspend resume usecase, the mixer config might not be
setup and if a partial update is issued for the first frame, it is
necessary to avoid accessing the NULL mixer config.

CRs-Fixed: 2053822
Change-Id: I17c0b98805ce9395899e988032097740126fee83
Signed-off-by: Benjamin Chan <bkchan@codeaurora.org>
This commit is contained in:
Benjamin Chan 2017-05-30 14:19:19 -04:00
parent 25865f691b
commit 55a175279c
1 changed files with 2 additions and 2 deletions
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4
drivers/video/fbdev/msm/mdss_mdp.h
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@ -1107,9 +1107,9 @@ static inline enum mdss_mdp_pu_type mdss_mdp_get_pu_type(
if (!is_split_lm(mctl->mfd) || mdss_mdp_is_both_lm_valid(mctl))
pu_type = MDSS_MDP_DEFAULT_UPDATE;
else if (mctl->mixer_left->valid_roi)
else if (mctl->mixer_left && mctl->mixer_left->valid_roi)
pu_type = MDSS_MDP_LEFT_ONLY_UPDATE;
else if (mctl->mixer_right->valid_roi)
else if (mctl->mixer_right && mctl->mixer_right->valid_roi)
pu_type = MDSS_MDP_RIGHT_ONLY_UPDATE;
else
pr_err("%s: invalid pu_type\n", __func__);