drm/amd/display: Remove wait while locked

Browse source

[Why]
We wait for mpc idle while in a locked state, leading to potential
deadlock.

[What]
Move the wait_for_idle call to outside of HW lock. This and a
call to wait_drr_doublebuffer_pending_clear are moved added to a new
static helper function called wait_for_outstanding_hw_updates, to make
the interface clearer.

Cc: stable@vger.kernel.org
Fixes: 8f0d304d21 ("drm/amd/display: Do not commit pipe when updating DRR")
Reviewed-by: Jun Lei <jun.lei@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Gabe Teeger <gabe.teeger@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Gabe Teeger 2023-08-14 16:06:18 -04:00 • committed by Alex Deucher

parent d8bafc2b1e

commit d12f00c91f

3 changed files with 42 additions and 28 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

drivers/gpu/drm/amd/display/dc/Makefile

View file

58

drivers/gpu/drm/amd/display/dc/core/dc.c

View file

11

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

View file