[PATCH] staging: vt6655: Fix kernel BUG on driver wpainitialization

From: Larry Finger
Date: Sun May 09 2010 - 23:10:24 EST


In http://bugzilla.novell.com/show_bug.cgi?id=597299, the vt6655 driver
generates a kernel BUG on a NULL pointer dereference at NULL. This problem
has been traced to a failure in the wpa_set_wpadev() routine. As the vt6656
driver does not call this routine, the vt6655 code is similarly set to skip
the call.

Signed-off-by: Larry Finger <Larry.Finger@xxxxxxxxxxxx>
Tested-by: Richard Meek <osl2008@xxxxxxxxxxxxxx>
Cc: Stable <stable@xxxxxxxxxx>
---

Greg,

The OP for the Novelle Bugzilla report has only reported that this patch
cures the kernel oops/panic, thus I don't know if the driver works. It seems
likely that no one actually tested the driver as it could never have worked
with the original code.

Larry
---

Index: wireless-testing/drivers/staging/vt6655/device_main.c
===================================================================
--- wireless-testing.orig/drivers/staging/vt6655/device_main.c
+++ wireless-testing/drivers/staging/vt6655/device_main.c
@@ -1090,11 +1089,13 @@ device_found1(struct pci_dev *pcid, cons
}
//2008-07-21-01<Add>by MikeLiu
//register wpadev
+#if 0
if(wpa_set_wpadev(pDevice, 1)!=0) {
printk("Fail to Register WPADEV?\n");
unregister_netdev(pDevice->dev);
free_netdev(dev);
}
+#endif
device_print_info(pDevice);
pci_set_drvdata(pcid, pDevice);
return 0;
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