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[PATCH] zd1211rw, fix oops when ejecting install media

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The disconnect function can dereference the net_device structure when it
is never allocated. This is the case when ejecting the device installer.

Signed-off-by: Marc Pignat <marc.pignat@hevs.ch>
Acked-by: Daniel Drake <dsd@gentoo.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Marc Pignat 2007-10-15 08:51:52 +02:00 committed by John W. Linville
parent 208eec8863
commit e0579d576c
1 changed files with 5 additions and 2 deletions
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7
drivers/net/wireless/zd1211rw/zd_usb.c
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@ -1044,14 +1044,17 @@ static int probe(struct usb_interface *intf, const struct usb_device_id *id)
static void disconnect(struct usb_interface *intf)
{
struct net_device *netdev = zd_intf_to_netdev(intf);
struct zd_mac *mac = zd_netdev_mac(netdev);
struct zd_usb *usb = &mac->chip.usb;
struct zd_mac *mac;
struct zd_usb *usb;
/* Either something really bad happened, or we're just dealing with
* a DEVICE_INSTALLER. */
if (netdev == NULL)
return;
mac = zd_netdev_mac(netdev);
usb = &mac->chip.usb;
dev_dbg_f(zd_usb_dev(usb), "\n");
zd_netdev_disconnect(netdev);