[PATCH 06/21] drm/amd/display: Release AUX engine after failed acquire

[Alan Liu]

From: Wyatt Wood <wyatt.w...@amd.com>

[Why]
There is a sequence in which aux arbitration
doesn't work correctly. Driver is left with
aux access after it times out waiting for access.
In future dmub fw is never granted aux access
and is stuck in a while loop.

[How]
Cancel aux request from driver after timing out.

Reviewed-by: Aric Cyr <aric....@amd.com>
Acked-by: Alan Liu <haoping....@amd.com>
Signed-off-by: Wyatt Wood <wyatt.w...@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dce/dce_aux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c 
b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
index 74b05b3aef08..b8d6f4202413 100644
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_aux.c
@@ -413,7 +413,7 @@ static bool acquire(
                return false;
 
        if (!acquire_engine(engine)) {
-               dal_ddc_close(ddc);
+               release_engine(engine);
                return false;
        }
 
-- 
2.25.1