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usbnet: Add stop function pointer to 'struct rndis_data'.

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Allow minidriver to know that netdev has stopped. This is to let
wireless turn off radio when usbnet dev is stopped.

Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Acked-by: David Brownell <dbrownell@users.sourceforge.net>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Jussi Kivilinna 2009-06-16 17:17:27 +03:00 committed by John W. Linville
parent d75ec2b7ec
commit a33e9e7f35
2 changed files with 17 additions and 0 deletions
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14
drivers/net/usb/usbnet.c
View File

@ -575,7 +575,9 @@ EXPORT_SYMBOL_GPL(usbnet_unlink_rx_urbs);
int usbnet_stop (struct net_device *net)
{
struct usbnet *dev = netdev_priv(net);
struct driver_info *info = dev->driver_info;
int temp;
int retval;
DECLARE_WAIT_QUEUE_HEAD_ONSTACK (unlink_wakeup);
DECLARE_WAITQUEUE (wait, current);
@ -587,6 +589,18 @@ int usbnet_stop (struct net_device *net)
net->stats.rx_errors, net->stats.tx_errors
);
/* allow minidriver to stop correctly (wireless devices to turn off
* radio etc) */
if (info->stop) {
retval = info->stop(dev);
if (retval < 0 && netif_msg_ifdown(dev))
devinfo(dev,
"stop fail (%d) usbnet usb-%s-%s, %s",
retval,
dev->udev->bus->bus_name, dev->udev->devpath,
info->description);
}
// ensure there are no more active urbs
add_wait_queue (&unlink_wakeup, &wait);
dev->wait = &unlink_wakeup;

3
include/linux/usb/usbnet.h
View File

@ -97,6 +97,9 @@ struct driver_info {
/* reset device ... can sleep */
int (*reset)(struct usbnet *);
/* stop device ... can sleep */
int (*stop)(struct usbnet *);
/* see if peer is connected ... can sleep */
int (*check_connect)(struct usbnet *);