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authorJussi Kivilinna <jussi.kivilinna@mbnet.fi>2009-07-30 19:41:20 +0300
committerJohn W. Linville <linville@tuxdriver.com>2009-08-04 16:44:15 -0400
commit1487cd5e76337555737cbc55d7d83f41460d198f (patch)
treef6d4dbb7debf36014d25ab4b482a32683d46ede2 /drivers/net/usb/usbnet.c
parente40cbdac0629402a4cb0c3bca0cc19ab7a00e00d (diff)
downloadlinux-1487cd5e76337555737cbc55d7d83f41460d198f.tar.bz2
usbnet: allow "minidriver" to prevent urb unlinking on usbnet_stop
rndis_wlan devices freeze after running usbnet_stop several times. It appears that firmware freezes in state where it does not respond to any RNDIS commands and device have to be physically unplugged/replugged. This patch lets minidrivers to disable unlink_urbs on usbnet_stop through new info flag. Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/usb/usbnet.c')
-rw-r--r--drivers/net/usb/usbnet.c32
1 files changed, 18 insertions, 14 deletions
diff --git a/drivers/net/usb/usbnet.c b/drivers/net/usb/usbnet.c
index 25e435c49040..af1fe4696509 100644
--- a/drivers/net/usb/usbnet.c
+++ b/drivers/net/usb/usbnet.c
@@ -601,21 +601,25 @@ int usbnet_stop (struct net_device *net)
info->description);
}
- // ensure there are no more active urbs
- add_wait_queue (&unlink_wakeup, &wait);
- dev->wait = &unlink_wakeup;
- temp = unlink_urbs (dev, &dev->txq) + unlink_urbs (dev, &dev->rxq);
-
- // maybe wait for deletions to finish.
- while (!skb_queue_empty(&dev->rxq)
- && !skb_queue_empty(&dev->txq)
- && !skb_queue_empty(&dev->done)) {
- msleep(UNLINK_TIMEOUT_MS);
- if (netif_msg_ifdown (dev))
- devdbg (dev, "waited for %d urb completions", temp);
+ if (!(info->flags & FLAG_AVOID_UNLINK_URBS)) {
+ /* ensure there are no more active urbs */
+ add_wait_queue(&unlink_wakeup, &wait);
+ dev->wait = &unlink_wakeup;
+ temp = unlink_urbs(dev, &dev->txq) +
+ unlink_urbs(dev, &dev->rxq);
+
+ /* maybe wait for deletions to finish. */
+ while (!skb_queue_empty(&dev->rxq)
+ && !skb_queue_empty(&dev->txq)
+ && !skb_queue_empty(&dev->done)) {
+ msleep(UNLINK_TIMEOUT_MS);
+ if (netif_msg_ifdown(dev))
+ devdbg(dev, "waited for %d urb completions",
+ temp);
+ }
+ dev->wait = NULL;
+ remove_wait_queue(&unlink_wakeup, &wait);
}
- dev->wait = NULL;
- remove_wait_queue (&unlink_wakeup, &wait);
usb_kill_urb(dev->interrupt);