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ath9k: fix access to a freed skb in ath_rx_tasklet()

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Signed-off-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Pavel Roskin
2009-04-03 20:10:26 -04:00
committed by John W. Linville
parent c6dbe17f19
commit 853da11b94
1 changed files with 3 additions and 1 deletions
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4
drivers/net/wireless/ath9k/recv.c
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@@ -493,6 +493,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush)
int hdrlen, padsize, retval; int hdrlen, padsize, retval;
bool decrypt_error = false; bool decrypt_error = false;
u8 keyix; u8 keyix;
__le16 fc;
spin_lock_bh(&sc->rx.rxbuflock); spin_lock_bh(&sc->rx.rxbuflock);
@@ -606,6 +607,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush)
/* see if any padding is done by the hw and remove it */ /* see if any padding is done by the hw and remove it */
hdr = (struct ieee80211_hdr *)skb->data; hdr = (struct ieee80211_hdr *)skb->data;
hdrlen = ieee80211_get_hdrlen_from_skb(skb); hdrlen = ieee80211_get_hdrlen_from_skb(skb);
fc = hdr->frame_control;
/* The MAC header is padded to have 32-bit boundary if the /* The MAC header is padded to have 32-bit boundary if the
* packet payload is non-zero. The general calculation for * packet payload is non-zero. The general calculation for
@@ -690,7 +692,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush)
sc->rx.rxotherant = 0; sc->rx.rxotherant = 0;
} }
if (ieee80211_is_beacon(hdr->frame_control) && if (ieee80211_is_beacon(fc) &&
(sc->sc_flags & SC_OP_WAIT_FOR_BEACON)) { (sc->sc_flags & SC_OP_WAIT_FOR_BEACON)) {
sc->sc_flags &= ~SC_OP_WAIT_FOR_BEACON; sc->sc_flags &= ~SC_OP_WAIT_FOR_BEACON;
ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP); ath9k_hw_setpower(sc->sc_ah, ATH9K_PM_NETWORK_SLEEP);