6.14-stable review patch. If anyone has any objections, please let me know.
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From: Harry Wentland harry.wentland@amd.com
[ Upstream commit cbf4890c6f28fb1ad733e14613fbd33c2004bced ]
Don't try to operate on a drm_wb_connector as an amdgpu_dm_connector. While dereferencing aconnector->base will "work" it's wrong and might lead to unknown bad things. Just... don't.
Reviewed-by: Alex Hung alex.hung@amd.com Signed-off-by: Harry Wentland harry.wentland@amd.com Signed-off-by: Roman Li roman.li@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 26 ++++++++++++------- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h | 2 +- .../display/amdgpu_dm/amdgpu_dm_mst_types.c | 6 ++--- 3 files changed, 20 insertions(+), 14 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 6c2d79d84feec..2cfc18401f3f2 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -7493,12 +7493,12 @@ static enum dc_status dm_validate_stream_and_context(struct dc *dc, }
struct dc_stream_state * -create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector, +create_validate_stream_for_sink(struct drm_connector *connector, const struct drm_display_mode *drm_mode, const struct dm_connector_state *dm_state, const struct dc_stream_state *old_stream) { - struct drm_connector *connector = &aconnector->base; + struct amdgpu_dm_connector *aconnector = NULL; struct amdgpu_device *adev = drm_to_adev(connector->dev); struct dc_stream_state *stream; const struct drm_connector_state *drm_state = dm_state ? &dm_state->base : NULL; @@ -7509,8 +7509,12 @@ create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector, if (!dm_state) return NULL;
- if (aconnector->dc_link->connector_signal == SIGNAL_TYPE_HDMI_TYPE_A || - aconnector->dc_link->dpcd_caps.dongle_type == DISPLAY_DONGLE_DP_HDMI_CONVERTER) + if (connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK) + aconnector = to_amdgpu_dm_connector(connector); + + if (aconnector && + (aconnector->dc_link->connector_signal == SIGNAL_TYPE_HDMI_TYPE_A || + aconnector->dc_link->dpcd_caps.dongle_type == DISPLAY_DONGLE_DP_HDMI_CONVERTER)) bpc_limit = 8;
do { @@ -7522,10 +7526,11 @@ create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector, break; }
- if (aconnector->base.connector_type == DRM_MODE_CONNECTOR_WRITEBACK) + dc_result = dc_validate_stream(adev->dm.dc, stream); + + if (!aconnector) /* writeback connector */ return stream;
- dc_result = dc_validate_stream(adev->dm.dc, stream); if (dc_result == DC_OK && stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST) dc_result = dm_dp_mst_is_port_support_mode(aconnector, stream);
@@ -7555,7 +7560,7 @@ create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector, __func__, __LINE__);
aconnector->force_yuv420_output = true; - stream = create_validate_stream_for_sink(aconnector, drm_mode, + stream = create_validate_stream_for_sink(connector, drm_mode, dm_state, old_stream); aconnector->force_yuv420_output = false; } @@ -7570,6 +7575,9 @@ enum drm_mode_status amdgpu_dm_connector_mode_valid(struct drm_connector *connec struct dc_sink *dc_sink; /* TODO: Unhardcode stream count */ struct dc_stream_state *stream; + /* we always have an amdgpu_dm_connector here since we got + * here via the amdgpu_dm_connector_helper_funcs + */ struct amdgpu_dm_connector *aconnector = to_amdgpu_dm_connector(connector);
if ((mode->flags & DRM_MODE_FLAG_INTERLACE) || @@ -7594,7 +7602,7 @@ enum drm_mode_status amdgpu_dm_connector_mode_valid(struct drm_connector *connec
drm_mode_set_crtcinfo(mode, 0);
- stream = create_validate_stream_for_sink(aconnector, mode, + stream = create_validate_stream_for_sink(connector, mode, to_dm_connector_state(connector->state), NULL); if (stream) { @@ -10646,7 +10654,7 @@ static int dm_update_crtc_state(struct amdgpu_display_manager *dm, if (!drm_atomic_crtc_needs_modeset(new_crtc_state)) goto skip_modeset;
- new_stream = create_validate_stream_for_sink(aconnector, + new_stream = create_validate_stream_for_sink(connector, &new_crtc_state->mode, dm_new_conn_state, dm_old_crtc_state->stream); diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h index d2703ca7dff31..195fec9048df7 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h @@ -989,7 +989,7 @@ int amdgpu_dm_process_dmub_set_config_sync(struct dc_context *ctx, unsigned int struct set_config_cmd_payload *payload, enum set_config_status *operation_result);
struct dc_stream_state * - create_validate_stream_for_sink(struct amdgpu_dm_connector *aconnector, + create_validate_stream_for_sink(struct drm_connector *connector, const struct drm_display_mode *drm_mode, const struct dm_connector_state *dm_state, const struct dc_stream_state *old_stream); 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 8497de360640a..c3759a1c32cec 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 @@ -1651,7 +1651,6 @@ int pre_validate_dsc(struct drm_atomic_state *state,
if (ind >= 0) { struct drm_connector *connector; - struct amdgpu_dm_connector *aconnector; struct drm_connector_state *drm_new_conn_state; struct dm_connector_state *dm_new_conn_state; struct dm_crtc_state *dm_old_crtc_state; @@ -1659,15 +1658,14 @@ int pre_validate_dsc(struct drm_atomic_state *state, connector = amdgpu_dm_find_first_crtc_matching_connector(state, state->crtcs[ind].ptr); - aconnector = to_amdgpu_dm_connector(connector); drm_new_conn_state = drm_atomic_get_new_connector_state(state, - &aconnector->base); + connector); dm_new_conn_state = to_dm_connector_state(drm_new_conn_state); dm_old_crtc_state = to_dm_crtc_state(state->crtcs[ind].old_state);
local_dc_state->streams[i] = - create_validate_stream_for_sink(aconnector, + create_validate_stream_for_sink(connector, &state->crtcs[ind].new_state->mode, dm_new_conn_state, dm_old_crtc_state->stream);