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ath9k: fix possible hang on flush 

If a flush is requested, make sure to clear the descriptor once we've
processed it.

This resolves a hang that will occur if all RX descriptors are full when a
flush is requested.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Tim Harvey 2014-04-21 16:14:56 -07:00 committed by John W. Linville
parent 328e203fc3
commit 3a758134e6
1 changed files with 2 additions and 3 deletions
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5
drivers/net/wireless/ath/ath9k/recv.c
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@ -1113,14 +1113,13 @@ int ath_rx_tasklet(struct ath_softc *sc, int flush, bool hp)
}
requeue:
list_add_tail(&bf->list, &sc->rx.rxbuf);
if (flush)
continue;
if (edma) {
ath_rx_edma_buf_link(sc, qtype);
} else {
ath_rx_buf_relink(sc, bf);
ath9k_hw_rxena(ah);
if (!flush)
ath9k_hw_rxena(ah);
}
} while (1);