From: Michael Grzeschik <m.grzeschik@pengutronix.de>
Date: Wed, 18 Apr 2012 07:58:23 +0000 (+0200)
Subject: isp1760-hcd: move dequeued qtds to the front in qh
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=8cb2268001f9553f9ff83416ce3f009c4ab1e089;p=openwrt%2Fstaging%2Fblogic.git

isp1760-hcd: move dequeued qtds to the front in qh

Make sure that dequeued urbs get handled first
by collect_qtds. To achieve that we better move them
up to the head in the qh list.

This for instance fixes hanging serial devices, which wait
for dequeued urbs to properly close their device node.

Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/usb/host/isp1760-hcd.c b/drivers/usb/host/isp1760-hcd.c
index 02198ee56a1f..4a378d38b954 100644
--- a/drivers/usb/host/isp1760-hcd.c
+++ b/drivers/usb/host/isp1760-hcd.c
@@ -1683,6 +1683,7 @@ static int isp1760_urb_dequeue(struct usb_hcd *hcd, struct urb *urb,
 	list_for_each_entry(qtd, &qh->qtd_list, qtd_list)
 		if (qtd->urb == urb) {
 			dequeue_urb_from_qtd(hcd, qh, qtd);
+			list_move(&qtd->qtd_list, &qh->qtd_list);
 			break;
 		}