3 files changed, 26 insertions, 4 deletions

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 83221e584147..a19ecb845a78 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5039,6 +5039,21 @@ bool intel_dp_has_connector(struct intel_dp *intel_dp,
 	return false;
 }
 
+static void wait_for_connector_hw_done(const struct drm_connector_state *conn_state)
+{
+	struct intel_connector *connector = to_intel_connector(conn_state->connector);
+	struct intel_display *display = to_intel_display(connector);
+
+	drm_modeset_lock_assert_held(&display->drm->mode_config.connection_mutex);
+
+	if (!conn_state->commit)
+		return;
+
+	drm_WARN_ON(display->drm,
+		    !wait_for_completion_timeout(&conn_state->commit->hw_done,
+						 msecs_to_jiffies(5000)));
+}
+
 int intel_dp_get_active_pipes(struct intel_dp *intel_dp,
 			      struct drm_modeset_acquire_ctx *ctx,
 			      u8 *pipe_mask)
@@ -5075,10 +5090,7 @@ int intel_dp_get_active_pipes(struct intel_dp *intel_dp,
 		if (!crtc_state->hw.active)
 			continue;
 
-		if (conn_state->commit)
-			drm_WARN_ON(&i915->drm,
-				    !wait_for_completion_timeout(&conn_state->commit->hw_done,
-								 msecs_to_jiffies(5000)));
+		wait_for_connector_hw_done(conn_state);
 
 		*pipe_mask |= BIT(crtc->pipe);
 	}
@@ -5087,6 +5099,11 @@ int intel_dp_get_active_pipes(struct intel_dp *intel_dp,
 	return ret;
 }
 
+void intel_dp_flush_connector_commits(struct intel_connector *connector)
+{
+	wait_for_connector_hw_done(connector->base.state);
+}
+
 static bool intel_dp_is_connected(struct intel_dp *intel_dp)
 {
 	struct intel_connector *connector = intel_dp->attached_connector;
@@ -5600,6 +5617,8 @@ intel_dp_detect(struct drm_connector *connector,
 	if (!intel_display_driver_check_access(dev_priv))
 		return connector->status;
 
+	intel_dp_flush_connector_commits(intel_connector);
+
 	/* Can't disconnect eDP */
 	if (intel_dp_is_edp(intel_dp))
 		status = edp_detect(intel_dp);
diff --git a/drivers/gpu/drm/i915/display/intel_dp.h b/drivers/gpu/drm/i915/display/intel_dp.h
index 60baf4072dc9..4efb9605a50e 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.h
+++ b/drivers/gpu/drm/i915/display/intel_dp.h
@@ -54,6 +54,7 @@ void intel_dp_set_link_params(struct intel_dp *intel_dp,
 int intel_dp_get_active_pipes(struct intel_dp *intel_dp,
 			      struct drm_modeset_acquire_ctx *ctx,
 			      u8 *pipe_mask);
+void intel_dp_flush_connector_commits(struct intel_connector *connector);
 void intel_dp_link_check(struct intel_encoder *encoder);
 void intel_dp_check_link_state(struct intel_dp *intel_dp);
 void intel_dp_set_power(struct intel_dp *intel_dp, u8 mode);
diff --git a/drivers/gpu/drm/i915/display/intel_dp_mst.c b/drivers/gpu/drm/i915/display/intel_dp_mst.c
index 1a2ff3e1cb68..5bba078c00d8 100644
--- a/drivers/gpu/drm/i915/display/intel_dp_mst.c
+++ b/drivers/gpu/drm/i915/display/intel_dp_mst.c
@@ -1573,6 +1573,8 @@ intel_dp_mst_detect(struct drm_connector *connector,
 	if (!intel_display_driver_check_access(i915))
 		return connector->status;
 
+	intel_dp_flush_connector_commits(intel_connector);
+
 	return drm_dp_mst_detect_port(connector, ctx, &intel_dp->mst_mgr,
 				      intel_connector->port);
 }