diff --git a/drivers/amlogic/media/vin/tvin/vdin/vdin_drv.c b/drivers/amlogic/media/vin/tvin/vdin/vdin_drv.c
index e3057ec7b081..76814b734396 100644
--- a/drivers/amlogic/media/vin/tvin/vdin/vdin_drv.c
+++ b/drivers/amlogic/media/vin/tvin/vdin/vdin_drv.c
@@ -1969,6 +1969,7 @@ static long vdin_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 			pr_info("TVIN_IOC_STOP_DEC(%d) port %s, decode stop ok\n\n",
 				parm->index, tvin_port_str(parm->port));
 		mutex_unlock(&devp->fe_lock);
+		reset_tvin_smr(parm->index);
 		break;
 	}
 	case TVIN_IOC_VF_REG:
diff --git a/drivers/amlogic/media/vin/tvin/vdin/vdin_sm.c b/drivers/amlogic/media/vin/tvin/vdin/vdin_sm.c
index 0879fb406906..4e5a98c39513 100644
--- a/drivers/amlogic/media/vin/tvin/vdin/vdin_sm.c
+++ b/drivers/amlogic/media/vin/tvin/vdin/vdin_sm.c
@@ -287,6 +287,11 @@ static void hdmirx_dv_check(struct vdin_dev_s *devp,
 	}
 }
 
+void reset_tvin_smr(unsigned int index)
+{
+	sm_dev[index].sig_status = TVIN_SIG_STATUS_NULL;
+}
+
 /*
  * tvin state machine routine
  *
diff --git a/drivers/amlogic/media/vin/tvin/vdin/vdin_sm.h b/drivers/amlogic/media/vin/tvin/vdin/vdin_sm.h
index 5b289bfdeb3d..b3009111cc5b 100644
--- a/drivers/amlogic/media/vin/tvin/vdin/vdin_sm.h
+++ b/drivers/amlogic/media/vin/tvin/vdin/vdin_sm.h
@@ -51,6 +51,7 @@ struct tvin_sm_s {
 };
 void tvin_smr(struct vdin_dev_s *pdev);
 void tvin_smr_init(int index);
+void reset_tvin_smr(unsigned int index);
 
 enum tvin_sm_status_e tvin_get_sm_status(int index);