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    Subject[24/67] rtl8180: avoid potential NULL deref in rtl8180_beacon_work
    2.6.35-stable review patch.  If anyone has any objections, please let us know.

    ------------------

    From: John W. Linville <linville@tuxdriver.com>

    commit 8f1d2d2be73a98c21e68fe2a26f633892d4abdd1 upstream.

    ieee80211_beacon_get can return NULL...

    Signed-off-by: John W. Linville <linville@tuxdriver.com>
    Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

    ---
    drivers/net/wireless/rtl818x/rtl8180_dev.c | 2 ++
    1 file changed, 2 insertions(+)

    --- a/drivers/net/wireless/rtl818x/rtl8180_dev.c
    +++ b/drivers/net/wireless/rtl818x/rtl8180_dev.c
    @@ -688,6 +688,8 @@ void rtl8180_beacon_work(struct work_str

    /* grab a fresh beacon */
    skb = ieee80211_beacon_get(dev, vif);
    + if (!skb)
    + goto resched;

    /*
    * update beacon timestamp w/ TSF value



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