diff options
| author | Melissa Wen <mwen@igalia.com> | 2024-02-27 16:08:25 -0300 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-02-29 20:35:21 -0500 |
| commit | 5d978e72df5f921943126411a9fa43a021650657 (patch) | |
| tree | 1e5f1ba386cb74accb66f87c515da4b3bb7c1070 /drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | |
| parent | 2c684b934244ef6e53a3078f15eb0e13e5c42ec0 (diff) | |
drm/amd/display: check dc_link before dereferencing
drivers/gpu/drm/amd/amdgpu/../display/amdgpu_dm/amdgpu_dm.c:6683 amdgpu_dm_connector_funcs_force()
warn: variable dereferenced before check 'dc_link' (see line 6663)
Fixes: 967176179215 ("drm/amd/display: fix null-pointer dereference on edid reading")
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Melissa Wen <mwen@igalia.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 32efce81a5a7..46dd06e8fc7e 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -6653,7 +6653,7 @@ static void amdgpu_dm_connector_funcs_force(struct drm_connector *connector) struct edid *edid; struct i2c_adapter *ddc; - if (dc_link->aux_mode) + if (dc_link && dc_link->aux_mode) ddc = &aconnector->dm_dp_aux.aux.ddc; else ddc = &aconnector->i2c->base; |