[PATCH 4/4] drm/i915/dp_mst: Clear ACT sent flag before waiting for it

[Imre Deak]

We do this during enabling, but not during disabling. BSpec doesn't
require this explicitly in either case, however based on my tests
nothing clears it after it gets set, so let's do this during disabling
as well.

Signed-off-by: Imre Deak <imre.deak at intel.com>
---
 drivers/gpu/drm/i915/display/intel_dp_mst.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 247538f03724..bbbc8c6dd6f0 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -349,6 +349,8 @@ static void intel_mst_disable_dp(struct intel_atomic_state *state,
 
 	drm_dp_mst_reset_vcpi_slots(&intel_dp->mst_mgr, connector->port);
 
+	clear_act_sent(intel_dp);
+
 	ret = drm_dp_update_payload_part1(&intel_dp->mst_mgr);
 	if (ret) {
 		drm_dbg_kms(&i915->drm, "failed to update payload %d\n", ret);
-- 
2.23.1