--- android_kernel_oppo_msm8974/drivers/video/msm/mdss/mdss_mdp_intf_cmd.c.orig	2019-07-02 22:24:37.259764000 +0200
+++ android_kernel_oppo_msm8974/drivers/video/msm/mdss/mdss_mdp_intf_cmd.c	2019-08-25 14:52:09.260796927 +0200
@@ -685,10 +685,10 @@ int mdss_mdp_cmd_kickoff(struct mdss_mdp
 		return -ENODEV;
 	}
 
-	if (ctx->intf_stopped) {
-		pr_err("ctx=%d stopped already\n", ctx->pp_num);
-		return -EPERM;
-	}
+	//if (ctx->intf_stopped) {
+	//	pr_err("ctx=%d stopped already\n", ctx->pp_num);
+	//	return -EPERM;
+	//}
 
 	mdss_mdp_ctl_perf_set_transaction_status(ctl,
 		PERF_HW_MDP_STATE, PERF_STATUS_BUSY);
@@ -889,6 +890,7 @@ panel_events:
 	}
 	pr_debug("%s: turn off panel\n", __func__);
 	memset(ctx, 0, sizeof(*ctx));
+	ctx->intf_stopped = 1;
 	ctl->priv_data = NULL;
 
 	ctl->stop_fnc = NULL;