diff options
| author | Nikita Zhandarovich <n.zhandarovich@fintech.ru> | 2024-02-06 08:50:56 -0800 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-02-12 16:13:53 -0500 |
| commit | 2a3cfb9a24a28da9cc13d2c525a76548865e182c (patch) | |
| tree | 48bab27ab869c49ce88fa7d9cc3a8d9707e97f5a /drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c | |
| parent | c4891d979c7668b195a0a75787967ec95a24ecef (diff) | |
drm/amd/display: fix NULL checks for adev->dm.dc in amdgpu_dm_fini()
Since 'adev->dm.dc' in amdgpu_dm_fini() might turn out to be NULL
before the call to dc_enable_dmub_notifications(), check
beforehand to ensure there will not be a possible NULL-ptr-deref
there.
Also, since commit 1e88eb1b2c25 ("drm/amd/display: Drop
CONFIG_DRM_AMD_DC_HDCP") there are two separate checks for NULL in
'adev->dm.dc' before dc_deinit_callbacks() and dc_dmub_srv_destroy().
Clean up by combining them all under one 'if'.
Found by Linux Verification Center (linuxtesting.org) with static
analysis tool SVACE.
Fixes: 81927e2808be ("drm/amd/display: Support for DMUB AUX")
Signed-off-by: Nikita Zhandarovich <n.zhandarovich@fintech.ru>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_acpi.c')
0 files changed, 0 insertions, 0 deletions