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Subject[PATCH] zd1211rw, fix oops when ejecting install media
Date
The disconnect function can dereference the net_device structure before it is
allocated. This is the case when ejecting the device installer.

Signed-off-by: Marc Pignat <marc.pignat@hevs.ch>

---

Hello!

Patch against 2.6.23.
This patch fixes the bug I've submitted to linux-wireless friday in the
"zd1211rw on 2.6.23 oops ejecting device" thread.

Regards

Marc

--- drivers/net/wireless/zd1211rw/zd_usb.c.orig 2007-10-15 08:29:16.000000000 +0200
+++ drivers/net/wireless/zd1211rw/zd_usb.c 2007-10-15 08:29:32.000000000 +0200
@@ -1041,14 +1041,17 @@ error:
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);

-
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