On Tue, 2010-02-09 at 12:24 -0800, Deepak Saxena wrote: > I'm working on getting the libertas_tf driver on 2.6.31 working on an > XO-1 laptopt with a USB connected device and running into the > following > situation during a suspend: > > Upon initiating a suspend, lbtf_op_remove_interface() gets called via > the wiphy_suspend() path: > Later on, the USB device is removed from the tree and > lbtf_op_remove_interface() gets called again and this causes > an OOOPS: > Following is the code for lbtf_op_remove_interface(). Basically we > set > priv->vif to NULL the first time around and then we crash on trying > to access priv->vif->type the second time around. Easy "fix" is a NULL > > check in lbtf_op_remove_interface() to simply return to caller > if !priv->vif, but I don't think the remove_interface() function > should be called twice. Indeed. mac80211's removal logic should cope with interfaces that are suspended. johannes
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