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disp: msm: sde: add null pointer check for encoder current master

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During virt disable call, sde_enc master was used without checking
for null condition. It results in crash. This change adds required
null pointer check for sde encoder current master before dereferencing
to avoid crash.

Change-Id: I69ee17017712ea3549bfefce5975a564a5a8c2e9
Signed-off-by: Yojana <quic_yjuadi@quicinc.com>
This commit is contained in:
Yojana
2022-01-12 19:10:05 +05:30
committed by Yojana Juadi
parent 369879853c
commit 58f9096045
1 changed files with 4 additions and 0 deletions
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4
msm/sde/sde_encoder.c
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@@ -3091,6 +3091,10 @@ static void sde_encoder_virt_disable(struct drm_encoder *drm_enc)
}
sde_enc = to_sde_encoder_virt(drm_enc);
if (!sde_enc->cur_master) {
SDE_ERROR("Invalid cur_master\n");
return;
}
sde_conn = to_sde_connector(sde_enc->cur_master->connector);
SDE_DEBUG_ENC(sde_enc, "\n");