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ath9k: fix beacon slot/buffer leak

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commit 74401773f8 upstream.

When cleaning up beacon buffers and slots, ath9k currently checks if
sc->ah->opmode is set to a beacon related mode before cleaning up
buffers.
An unfortunate ordering of interface up/down commands can lead to
sc->ah->opmode being set to monitor mode, while there are AP interfaces
present on the same wiphy.
Always cleaning up beacon buffers if present fixes this issue.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Felix Fietkau
2010-01-19 20:51:32 +01:00
committed by Greg Kroah-Hartman
parent 1c97637c37
commit a420e9f34f
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/ath/ath9k/main.c
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@@ -2285,10 +2285,10 @@ static void ath9k_remove_interface(struct ieee80211_hw *hw,
(sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT)) {
ath9k_ps_wakeup(sc);
ath9k_hw_stoptxdma(sc->sc_ah, sc->beacon.beaconq);
ath_beacon_return(sc, avp);
ath9k_ps_restore(sc);
}
ath_beacon_return(sc, avp);
sc->sc_flags &= ~SC_OP_BEACONS;
for (i = 0; i < ARRAY_SIZE(sc->beacon.bslot); i++) {