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Staging: vt6655-6: potential NULL dereference in hostap_disable_hostapd()

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We fixed this to use free_netdev() instead of kfree() but unfortunately
free_netdev() doesn't accept NULL pointers.  Smatch complains about
this, it's not something I discovered through testing.

Fixes: 3030d40b50 ('staging: vt6655: use free_netdev instead of kfree')
Fixes: 0a438d5b38 ('staging: vt6656: use free_netdev instead of kfree')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Dan Carpenter 2013-11-07 10:55:43 +03:00 committed by Greg Kroah-Hartman
parent 3de00ee4ce
commit cb4855b49d
2 changed files with 4 additions and 2 deletions
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3
drivers/staging/vt6655/hostap.c
View file

@ -143,7 +143,8 @@ static int hostap_disable_hostapd(PSDevice pDevice, int rtnl_locked)
DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: Netdevice %s unregistered\n",
pDevice->dev->name, pDevice->apdev->name);
}
free_netdev(pDevice->apdev);
if (pDevice->apdev)
free_netdev(pDevice->apdev);
pDevice->apdev = NULL;
pDevice->bEnable8021x = false;
pDevice->bEnableHostWEP = false;

3
drivers/staging/vt6656/hostap.c
View file

@ -133,7 +133,8 @@ static int hostap_disable_hostapd(struct vnt_private *pDevice, int rtnl_locked)
DBG_PRT(MSG_LEVEL_DEBUG, KERN_INFO "%s: Netdevice %s unregistered\n",
pDevice->dev->name, pDevice->apdev->name);
}
free_netdev(pDevice->apdev);
if (pDevice->apdev)
free_netdev(pDevice->apdev);
pDevice->apdev = NULL;
pDevice->bEnable8021x = false;
pDevice->bEnableHostWEP = false;