Commit 9a613195 authored Jul 05, 2008 by Ivo van Doorn Committed by John W. Linville Jul 14, 2008

rt2x00: Fix NULL pointer error in adhoc/master mode

As soon as an interface is enabled, and that interface is in adhoc or master mode,
the device will start raising beacondone interrupts. But before the first interrupt is
raised, mac80211 will probably not have send any beacons to the device yet, which
results in a NULL pointer error when the skb is being freed.

Note that the "raise beacondone interrupts without a beacon" is also a bug,
and will be addressed later. The more important bug however is preventing
the NULL pointer failt itself, since there might be other conditions that could trigger
it as well.

Signed-off-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

parent 49292d56

drivers/net/wireless/rt2x00/rt2x00queue.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -108,6 +108,9 @@ void rt2x00queue_unmap_skb(struct rt2x00_dev rt2x00dev, struct sk_buff skb)

		void rt2x00queue_free_skb(struct rt2x00_dev rt2x00dev, struct sk_buff skb)
		{
		if (!skb)
		return;

		rt2x00queue_unmap_skb(rt2x00dev, skb);
		dev_kfree_skb_any(skb);
		}