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Move the TXQ lock earlier in this routine - so to correctly protect the

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link pointer check.
This commit is contained in:
Adrian Chadd 2013-03-24 04:09:54 +00:00
parent 0acf45ed86
commit 56a859789f
1 changed files with 2 additions and 1 deletions
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3
sys/dev/ath/if_ath_tx.c
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@ -702,6 +702,8 @@ ath_tx_handoff_mcast(struct ath_softc *sc, struct ath_txq *txq,
KASSERT((bf->bf_flags & ATH_BUF_BUSY) == 0,
("%s: busy status 0x%x", __func__, bf->bf_flags));
ATH_TXQ_LOCK(txq);
if (txq->axq_link != NULL) {
struct ath_buf *last = ATH_TXQ_LAST(txq, axq_q_s);
struct ieee80211_frame *wh;
@ -715,7 +717,6 @@ ath_tx_handoff_mcast(struct ath_softc *sc, struct ath_txq *txq,
/* link descriptor */
*txq->axq_link = bf->bf_daddr;
}
ATH_TXQ_LOCK(txq);
ATH_TXQ_INSERT_TAIL(txq, bf, bf_list);
ath_hal_gettxdesclinkptr(sc->sc_ah, bf->bf_lastds, &txq->axq_link);
ATH_TXQ_UNLOCK(txq);