Hi,
Please add:
Fixes: aa5fdb1ab5b6 ("drm/amd/display: Explicitly specify update type
per plane info change")
On 4/14/23 11:53, Qingqing Zhuo wrote:
From: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
[Why]
The bit for flip addr is being set causing the determination for
FAST vs MEDIUM to always return MEDIUM when plane info is provided
as a surface update. This causes extreme stuttering for the typical
atomic update path on Linux.
[How]
Don't use update_flags->raw for determining FAST vs MEDIUM. It's too
fragile to changes like this.
Explicitly specify the update type per update flag instead. It's not
as clever as checking the bits itself but at least it's correct.
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@xxxxxxx>
---
drivers/gpu/drm/amd/display/dc/core/dc.c | 3 ---
1 file changed, 3 deletions(-)
diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c
index 238a13266ad8..e65ba87ee2c5 100644
--- a/drivers/gpu/drm/amd/display/dc/core/dc.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc.c
@@ -2482,9 +2482,6 @@ static enum surface_update_type det_surface_update(const struct dc *dc,
enum surface_update_type overall_type = UPDATE_TYPE_FAST;
union surface_update_flags *update_flags = &u->surface->update_flags;
- if (u->flip_addr)
- update_flags->bits.addr_update = 1;
-
if (!is_surface_in_context(context, u->surface) || u->surface->force_full_update) {
update_flags->raw = 0xFFFFFFFF;
return UPDATE_TYPE_FULL;
