diff options
| author | Jussi Kivilinna <jussi.kivilinna@mbnet.fi> | 2009-07-30 20:41:20 +0400 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2009-08-05 00:44:15 +0400 |
| commit | 1487cd5e76337555737cbc55d7d83f41460d198f (patch) | |
| tree | f6d4dbb7debf36014d25ab4b482a32683d46ede2 /drivers | |
| parent | e40cbdac0629402a4cb0c3bca0cc19ab7a00e00d (diff) | |
| download | linux-1487cd5e76337555737cbc55d7d83f41460d198f.tar.xz | |
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')
| -rw-r--r-- | drivers/net/usb/usbnet.c | 32 | ||||
| -rw-r--r-- | drivers/net/wireless/rndis_wlan.c | 9 |
2 files changed, 24 insertions, 17 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); diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c index 09c0702ae645..76c5ec6bbbc5 100644 --- a/drivers/net/wireless/rndis_wlan.c +++ b/drivers/net/wireless/rndis_wlan.c @@ -2513,7 +2513,8 @@ static int rndis_wlan_stop(struct usbnet *usbdev) static const struct driver_info bcm4320b_info = { .description = "Wireless RNDIS device, BCM4320b based", - .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT, + .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT | + FLAG_AVOID_UNLINK_URBS, .bind = rndis_wlan_bind, .unbind = rndis_wlan_unbind, .status = rndis_status, @@ -2527,7 +2528,8 @@ static const struct driver_info bcm4320b_info = { static const struct driver_info bcm4320a_info = { .description = "Wireless RNDIS device, BCM4320a based", - .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT, + .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT | + FLAG_AVOID_UNLINK_URBS, .bind = rndis_wlan_bind, .unbind = rndis_wlan_unbind, .status = rndis_status, @@ -2541,7 +2543,8 @@ static const struct driver_info bcm4320a_info = { static const struct driver_info rndis_wlan_info = { .description = "Wireless RNDIS device", - .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT, + .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT | + FLAG_AVOID_UNLINK_URBS, .bind = rndis_wlan_bind, .unbind = rndis_wlan_unbind, .status = rndis_status, |