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mac80211: fix alignment calculation bug

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When checking whether or not a given frame needs to be
moved to be properly aligned to a 4-byte boundary, we
use & 4 which wasn't intended, this code should check
the lowest two bits.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg 2009-04-21 01:36:59 +02:00 committed by John W. Linville
parent 7d42081a27
commit d1bcb9f127
1 changed files with 1 additions and 1 deletions
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2
net/mac80211/rx.c
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@ -1397,7 +1397,7 @@ ieee80211_deliver_skb(struct ieee80211_rx_data *rx)
* mac80211. That also explains the __skb_push()
* below.
*/
align = (unsigned long)skb->data & 4;
align = (unsigned long)skb->data & 3;
if (align) {
if (WARN_ON(skb_headroom(skb) < 3)) {
dev_kfree_skb(skb);