Commit 3a758134 authored Apr 21, 2014 by Tim Harvey Committed by John W. Linville Apr 22, 2014

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>

parent 328e203f

drivers/net/wireless/ath/ath9k/recv.c

+2 −3

Original line number	Diff line number	Diff line
		@@ -1113,13 +1113,12 @@ 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);
		if (!flush)
		ath9k_hw_rxena(ah);
		}
		} while (1);