rtl8180: avoid potential NULL deref in rtl8180_beacon_work

ieee80211_beacon_get can return NULL... Signed-off-by: John W. Linville <linville@tuxdriver.com> Cc: stable@kernel.org
git-mirror · Aug 5, 2010 · 8f1d2d2 · 8f1d2d2
1 parent c5d2711
commit 8f1d2d2
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/drivers/net/wireless/rtl818x/rtl8180_dev.c b/drivers/net/wireless/rtl818x/rtl8180_dev.c
@@ -695,6 +695,8 @@ static void rtl8180_beacon_work(struct work_struct *work)
 
 	/* grab a fresh beacon */
 	skb = ieee80211_beacon_get(dev, vif);
+	if (!skb)
+		goto resched;
 
 	/*
 	 * update beacon timestamp w/ TSF value