diff --git a/lichee/linux-4.9/drivers/net/wireless/xr806/hwio.c b/lichee/linux-4.9/drivers/net/wireless/xr806/hwio.c
index 045505d85..0c02b44ff 100644
--- a/lichee/linux-4.9/drivers/net/wireless/xr806/hwio.c
+++ b/lichee/linux-4.9/drivers/net/wireless/xr806/hwio.c
@@ -98,13 +98,12 @@ int xradio_hwio_write(struct sk_buff *skb)
 	}
 
 	// wait dev enter read state(gpio == 1)
-	delay = jiffies + IO_WAIT_TIME_S * HZ;
 	while (!ops->read_rw_gpio()) {
 		if (time_after(jiffies, delay)) {
 			hwio_printk(XRADIO_DBG_ERROR, "write data wait dev read state faild\n");
 			return -1;
 		}
-		xradio_k_usleep(150);
+		xradio_k_usleep(300);
 	}
 
 	if (ops->write(skb->data, skb->len)) {
diff --git a/lichee/linux-4.9/drivers/net/wireless/xr806/os_dep/os_intf.c b/lichee/linux-4.9/drivers/net/wireless/xr806/os_dep/os_intf.c
index dbf354181..d087e9825 100644
--- a/lichee/linux-4.9/drivers/net/wireless/xr806/os_dep/os_intf.c
+++ b/lichee/linux-4.9/drivers/net/wireless/xr806/os_dep/os_intf.c
@@ -3,7 +3,7 @@
 void xradio_k_usleep(u32 us)
 {
 #if PLATFORM_LINUX
-	usleep_range(us, 200);
+	usleep_range(us, 400);
 #endif
 }