The patch below does not apply to the 5.10-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
Possible dependencies:
33ac94dbdfd5 ("drm/amdgpu/dm/mst: Fix uninitialized var in pre_compute_mst_dsc_configs_for_state()") 7cce4cd628be ("drm/amdgpu/mst: Stop ignoring error codes and deadlocking") 876fcc4222e1 ("drm/amd/display: Validate DSC After Enable All New CRTCs") 4d07b0bc4034 ("drm/display/dp_mst: Move all payload info into the atomic state") 6366fc70deb9 ("drm/display/dp_mst: Maintain time slot allocations when deleting payloads") a5c2c0d164e9 ("drm/display/dp_mst: Add nonblocking helpers for DP MST") 0b4e477e08a1 ("drm/display/dp_mst: Add helper for finding payloads in atomic MST state") 0bee2ae29eb4 ("drm/display/dp_mst: Add some missing kdocs for atomic MST structs") df78f7f660cd ("drm/display/dp_mst: Call them time slots, not VCPI slots") 48b6b3726fb7 ("drm/display/dp_mst: Rename drm_dp_mst_vcpi_allocation") dbaadb3cebaa ("drm/amdgpu/dm/mst: Rename get_payload_table()") 8c5e9bbb3662 ("drm/amdgpu/dc/mst: Rename dp_mst_stream_allocation(_table)") 25f7cde8bad9 ("drm/amd/display: Add tags for indicating mst progress status") 8b076fa7c5be ("drm/amd/display: Add is_mst_connector debugfs entry") 922e7ee31def ("drm/amd/display: Clear edid when unplug mst connector") 990cad0e4a9d ("drm/amd/display: extract update stream allocation to link_hwss") 84a8b3908285 ("drm/amd/display: Release remote dc_sink under mst scenario") 71be4b16d39a ("drm/amd/display: dsc validate fail not pass to atomic check") 453b0016a054 ("drm/amd/display: Detect dpcd_rev when hotplug mst monitor") 00df0514ab13 ("Merge tag 'amd-drm-next-5.19-2022-05-18' of https://gitlab.freedesktop.org/agd5f/linux into drm-next")
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 33ac94dbdfd5f0fdd820c82ef930e20ad346a063 Mon Sep 17 00:00:00 2001 From: Lyude Paul lyude@redhat.com Date: Fri, 18 Nov 2022 14:54:05 -0500 Subject: [PATCH] drm/amdgpu/dm/mst: Fix uninitialized var in pre_compute_mst_dsc_configs_for_state()
Coverity noticed this one, so let's fix it.
Fixes: 7cce4cd628be ("drm/amdgpu/mst: Stop ignoring error codes and deadlocking") Signed-off-by: Lyude Paul lyude@redhat.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Reviewed-by: Harry Wentland harry.wentland@amd.com Cc: stable@vger.kernel.org # v5.6+
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 24d859ad4712..1edf7385f8d8 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 @@ -1187,7 +1187,7 @@ static int pre_compute_mst_dsc_configs_for_state(struct drm_atomic_state *state, struct amdgpu_dm_connector *aconnector; struct drm_dp_mst_topology_mgr *mst_mgr; int link_vars_start_index = 0; - int ret; + int ret = 0;
for (i = 0; i < dc_state->stream_count; i++) computed_streams[i] = false;