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drm/amd/display: Fix pointer dereferenced before checking

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The pointer edid_buf is dereferencing pointer edid before edid is being
 null checked. Fix this by assigning edid->raw_edid to edid_buf only if
edid is not NULL, otherwise just NULL.

Signed-off-by: Haowen Bai <baihaowen@meizu.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Haowen Bai
2022-03-24 17:27:14 +08:00
committed by Alex Deucher
parent c4af42b4eb
commit 3222a81148
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_helpers.c
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@@ -90,7 +90,7 @@ enum dc_edid_status dm_helpers_parse_edid_caps(
{
struct amdgpu_dm_connector *aconnector = link->priv;
struct drm_connector *connector = &aconnector->base;
struct edid *edid_buf = (struct edid *) edid->raw_edid;
struct edid *edid_buf = edid ? (struct edid *) edid->raw_edid : NULL;
struct cea_sad *sads;
int sad_count = -1;
int sadb_count = -1;