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authorFelix Fietkau <nbd@openwrt.org>2013-01-09 16:16:55 +0100
committerJohn W. Linville <linville@tuxdriver.com>2013-01-11 14:12:02 -0500
commit7fc00a3054b70b1794c2d64db703eb467ad0365c (patch)
tree3a8c6672e339337b16a6e4bb736d3c6f2d3bb238 /drivers/net/wireless/ath/ath9k/main.c
parentath9k: remove the WARN_ON that triggers if generating a beacon fails (diff)
downloadlinux-dev-7fc00a3054b70b1794c2d64db703eb467ad0365c.tar.xz
linux-dev-7fc00a3054b70b1794c2d64db703eb467ad0365c.zip
ath9k: add a better fix for the rx tasklet vs rx flush race
Ensure that the rx tasklet is no longer running when entering the reset path. Also remove the distinction between flush and no-flush frame processing. If a frame has been received and ACKed by the hardware, the stack needs to see it, so that the BA receive window does not go out of sync. Cc: stable@vger.kernel.org Signed-off-by: Felix Fietkau <nbd@openwrt.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/ath/ath9k/main.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/main.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index be30a9af1528..d3cf01ec2d15 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -196,6 +196,8 @@ static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
ath9k_debug_samp_bb_mac(sc);
ath9k_hw_disable_interrupts(ah);
+ tasklet_disable(&sc->intr_tq);
+
if (!ath_stoprecv(sc))
ret = false;
@@ -210,6 +212,8 @@ static bool ath_prepare_reset(struct ath_softc *sc, bool retry_tx, bool flush)
ath_flushrecv(sc);
}
+ tasklet_enable(&sc->intr_tq);
+
return ret;
}