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close race between ath_tx_start and ath_tx_processq

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Reviewed by:	apatti
MFC after:	1 week
This commit is contained in:
Sam Leffler 2006-02-15 18:12:24 +00:00
parent 14d5e8363f
commit 1539af1ef5
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=155729
1 changed files with 2 additions and 1 deletions
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3
sys/dev/ath/if_ath.c
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@ -3766,7 +3766,6 @@ ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
txq->axq_intrcnt = 0; /* reset periodic desc intr count */
bf = STAILQ_FIRST(&txq->axq_q);
if (bf == NULL) {
txq->axq_link = NULL;
ATH_TXQ_UNLOCK(txq);
break;
}
@ -3782,6 +3781,8 @@ ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
break;
}
ATH_TXQ_REMOVE_HEAD(txq, bf_list);
if (txq->axq_depth == 0)
txq->axq_link = NULL;
ATH_TXQ_UNLOCK(txq);
ni = bf->bf_node;