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ath9k: ensure that rx is not enabled during a reset

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During a reset, rx buffers are flushed after rx has been disabled. To avoid
race conditions, rx needs to stay disabled during the reset, so avoid any
calls to ath9k_hw_rxena in that case.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2011-09-14 21:23:03 +02:00 committed by John W. Linville
parent c31c8261bf
commit 3483288caf
2 changed files with 5 additions and 4 deletions
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4
drivers/net/wireless/ath/ath9k/main.c
View file

@ -247,8 +247,8 @@ static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
if (!flush) {
if (ah->caps.hw_caps & ATH9K_HW_CAP_EDMA)
ath_rx_tasklet(sc, 0, true);
ath_rx_tasklet(sc, 0, false);
ath_rx_tasklet(sc, 1, true);
ath_rx_tasklet(sc, 1, false);
} else {
ath_flushrecv(sc);
}

5
drivers/net/wireless/ath/ath9k/recv.c
View file

@ -1839,7 +1839,7 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
* If we're asked to flush receive queue, directly
* chain it back at the queue without processing it.
*/
if (flush)
if (sc->sc_flags & SC_OP_RXFLUSH)
goto requeue_drop_frag;
retval = ath9k_rx_skb_preprocess(common, hw, hdr, &rs,
@ -1967,7 +1967,8 @@ requeue:
} else {
list_move_tail(&bf->list, &sc->rx.rxbuf);
ath_rx_buf_link(sc, bf);
ath9k_hw_rxena(ah);
if (!flush)
ath9k_hw_rxena(ah);
}
} while (1);