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drm/amd/display: Fix hang when skipping modeset 

commit da5e149097 upstream.

[Why&How]

When skipping full modeset since the only state change was a front porch
change, the DC commit sequence requires extra checks to handle non
existant plane states being asked to be removed from context.

Reviewed-by: Alvin Lee <Alvin.Lee2@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Aurabindo Pillai 2023-03-24 10:42:37 -04:00 committed by Greg Kroah-Hartman
parent b9d9e8856f
commit 212fbbf9e2
2 changed files with 7 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -7783,6 +7783,8 @@ static void amdgpu_dm_commit_planes(struct drm_atomic_state *state,
continue;
dc_plane = dm_new_plane_state->dc_state;
if (!dc_plane)
continue;
bundle->surface_updates[planes_count].surface = dc_plane;
if (new_pcrtc_state->color_mgmt_changed) {
@ -9330,8 +9332,9 @@ static int dm_update_plane_state(struct dc *dc,
return -EINVAL;
}
if (dm_old_plane_state->dc_state)
dc_plane_state_release(dm_old_plane_state->dc_state);
dc_plane_state_release(dm_old_plane_state->dc_state);
dm_new_plane_state->dc_state = NULL;
*lock_and_validation_needed = true;

3
drivers/gpu/drm/amd/display/dc/core/dc_resource.c
View File

@ -1707,6 +1707,9 @@ bool dc_remove_plane_from_context(
struct dc_stream_status *stream_status = NULL;
struct resource_pool *pool = dc->res_pool;
if (!plane_state)
return true;
for (i = 0; i < context->stream_count; i++)
if (context->streams[i] == stream) {
stream_status = &context->stream_status[i];