Commit e9098cc9 authored by Melissa Wen's avatar Melissa Wen Committed by Alex Deucher
Browse files

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: 96717617 ("drm/amd/display: fix null-pointer dereference on edid reading")
Reported-by: default avatarDan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: default avatarMelissa Wen <mwen@igalia.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 6601c15c

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c

+1 −1
Original line number Diff line number Diff line
@@ -6539,7 +6539,7 @@ 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;