diff options
| author |   Hersen Wu <hersenxs.wu@amd.com> | 2023-03-28 10:45:24 -0400 |
|---|---|---|
| committer |   Alex Deucher <alexander.deucher@amd.com> | 2023-04-18 16:28:52 -0400 |
| commit | cdff36a0217aadf5cbc167893ad1c0da869619cb (patch) | |
| tree | d5c222af48e234994b2a32eaf8fc19ffbfa4c1fd /drivers/gpu/drm/amd/display | |
| parent | drm/amd/display: drain dmub inbox if queue is full (diff) | |
| download | linux-rng-cdff36a0217aadf5cbc167893ad1c0da869619cb.tar.xz linux-rng-cdff36a0217aadf5cbc167893ad1c0da869619cb.zip | |
drm/amd/display: fix access hdcp_workqueue assert
[Why] hdcp are enabled for asics from raven. for old asics
which hdcp are not enabled, hdcp_workqueue are null. some
access to hdcp work queue are not guarded with pointer check.
[How] add hdcp_workqueue pointer check before access workqueue.
Reviewed-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/display')
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 6 | ||||
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 16 |
2 files changed, 16 insertions, 6 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 af3efb245610..6e9d2e680d50 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -8559,6 +8559,9 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) struct amdgpu_crtc *acrtc = to_amdgpu_crtc(dm_new_con_state->base.crtc); struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector); + if (!adev->dm.hdcp_workqueue) + continue; + pr_debug("[HDCP_DM] -------------- i : %x ----------\n", i); if (!connector) @@ -8607,6 +8610,9 @@ static void amdgpu_dm_atomic_commit_tail(struct drm_atomic_state *state) struct amdgpu_crtc *acrtc = to_amdgpu_crtc(dm_new_con_state->base.crtc); struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector); + if (!adev->dm.hdcp_workqueue) + continue; + new_crtc_state = NULL; old_crtc_state = NULL; diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 994ba426ca66..5dc79b753d5f 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -379,13 +379,17 @@ static int dm_dp_mst_get_modes(struct drm_connector *connector) if (aconnector->dc_sink && connector->state) { struct drm_device *dev = connector->dev; struct amdgpu_device *adev = drm_to_adev(dev); - struct hdcp_workqueue *hdcp_work = adev->dm.hdcp_workqueue; - struct hdcp_workqueue *hdcp_w = &hdcp_work[aconnector->dc_link->link_index]; - connector->state->hdcp_content_type = - hdcp_w->hdcp_content_type[connector->index]; - connector->state->content_protection = - hdcp_w->content_protection[connector->index]; + if (adev->dm.hdcp_workqueue) { + struct hdcp_workqueue *hdcp_work = adev->dm.hdcp_workqueue; + struct hdcp_workqueue *hdcp_w = + &hdcp_work[aconnector->dc_link->link_index]; + + connector->state->hdcp_content_type = + hdcp_w->hdcp_content_type[connector->index]; + connector->state->content_protection = + hdcp_w->content_protection[connector->index]; + } } if (aconnector->dc_sink) { |