From: Wyatt Wood <[email protected]> [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 <[email protected]> Acked-by: Alan Liu <[email protected]> Signed-off-by: Wyatt Wood <[email protected]> --- 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
