diff -rupw warp/warp_ser.c warp-new/warp_ser.c
--- warp/warp_ser.c	2022-04-25 17:09:39.000000000 +0800
+++ warp-new/warp_ser.c	2022-10-23 01:33:00.447263140 +0800
@@ -287,7 +287,7 @@ wed_ser_task(void *data)
 
 	while (!kthread_should_stop()) {
 		wed_ser_detect(wed);
-		msleep(ser_ctrl->period_time);
+		msleep_interruptible(ser_ctrl->period_time);
 	}
 	warp_dbg(WARP_DBG_OFF, "%s(): wed_ser exist, wed->irq=%d!\n", __func__,
 		 wed->irq);