delay 200ms before usb port rescan to wait usb ready.

Change-Id: If0200010610a71dfa02f2c7361b703d6f56f4e70 Signed-off-by: Chong Qiao <qiaochong@loongson.cn>
4 years ago · a8cc915704
1 changed files with 1 additions and 0 deletions
--- a/sys/dev/usb/usb.c
+++ b/sys/dev/usb/usb.c
@ -1786,6 +1786,7 @@ void usb_hub_port_connect_change(struct usb_device *dev, int port)
 	/* Reset the port */
 	if (hub_port_reset(dev, port, &portstatus) < 0) {
 		printf("cannot reset port %i!?\n", port + 1);
+		wait_ms(200);
 		hub_port_need_rescan = 1;
 		return;
 	}