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ath9k: fix possible hang on flush

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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 @@ requeue_drop_frag:
} }
requeue: requeue:
list_add_tail(&bf->list, &sc->rx.rxbuf); list_add_tail(&bf->list, &sc->rx.rxbuf);
if (flush)
continue;
if (edma) { if (edma) {
ath_rx_edma_buf_link(sc, qtype); ath_rx_edma_buf_link(sc, qtype);
} else { } else {
ath_rx_buf_relink(sc, bf); ath_rx_buf_relink(sc, bf);
ath9k_hw_rxena(ah); if (!flush)
ath9k_hw_rxena(ah);
} }
} while (1); } while (1);