From: Fangzhi Zuo <Jerry.Zuo@xxxxxxx>
commit 7745a1dee0a687044888179e6e7fcd6d704992a9 upstream.
[why]
It is to fix in try_disable_dsc() due to misrevert of
commit 338567d17627 ("drm/amd/display: Fix MST BW calculation Regression")
[How]
Fix restoring minimum compression bw by 'max_kbps', instead of native bw 'stream_kbps'
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@xxxxxxx>
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Cc: Mario Limonciello <superm1@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- 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
@@ -1072,7 +1072,7 @@ static int try_disable_dsc(struct drm_at
vars[next_index].bpp_x16 = 0;
} else {
DRM_DEBUG_DRIVER("MST_DSC index #%d, restore minimum compression\n", next_index);
- vars[next_index].pbn = kbps_to_peak_pbn(params[next_index].bw_range.stream_kbps, fec_overhead_multiplier_x1000);
+ vars[next_index].pbn = kbps_to_peak_pbn(params[next_index].bw_range.max_kbps, fec_overhead_multiplier_x1000);
ret = drm_dp_atomic_find_time_slots(state,
params[next_index].port->mgr,
params[next_index].port,
Patches currently in stable-queue which might be from Jerry.Zuo@xxxxxxx are
queue-6.11/drm-amdgpu-display-fix-a-mistake-in-revert-commit.patch
queue-6.11/drm-amd-display-add-dsc-debug-log.patch
queue-6.11/drm-amd-display-fix-synaptics-cascaded-panamera-dsc-determination.patch
