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ath9k_htc: Fix beaconing in IBSS mode

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The current way of managing beaconing in ad-hoc
mode has a subtle race - the beacon obtained from mac80211
is freed in the SWBA handler rather than the TX
completion routine. But transmission of beacons goes
through the normal SKB queue maintained in hif_usb,
leading to a situation where __skb_dequeue() in the TX
completion handler goes kaput.

Fix this by simply getting a beacon from mac80211 for
every SWBA and free it in its completion routine.

Signed-off-by: Sujith <Sujith.Manoharan@atheros.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith
2010-05-06 14:45:47 +05:30
committed by John W. Linville
parent 0aaffa9b96
commit 9c6dda4e2d
4 changed files with 13 additions and 45 deletions
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2
drivers/net/wireless/ath/ath9k/htc_drv_init.c
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@ -144,7 +144,7 @@ static int ath9k_init_htc_services(struct ath9k_htc_priv *priv)
goto err;
/* Beacon */
ret = ath9k_htc_connect_svc(priv, WMI_BEACON_SVC, NULL,
ret = ath9k_htc_connect_svc(priv, WMI_BEACON_SVC, ath9k_htc_beaconep,
&priv->beacon_ep);
if (ret)
goto err;