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ath10k: make sure to not leak beacon dma mapping 

If for some reason mac80211 wouldn't stop
beaconing gracefully and just removed interface of
a running AP/IBSS interface it was possible to
leak pending beacon DMA mapping. It's very
unlikely but better safe than sorry.

Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
This commit is contained in:
Michal Kazior 2014-04-23 19:30:05 +03:00 committed by Kalle Valo
parent 216a18367a
commit ec6bc5523b
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/ath/ath10k/mac.c
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@ -2771,6 +2771,9 @@ static void ath10k_remove_interface(struct ieee80211_hw *hw,
spin_lock_bh(&ar->data_lock);
if (arvif->beacon) {
dma_unmap_single(arvif->ar->dev,
ATH10K_SKB_CB(arvif->beacon)->paddr,
arvif->beacon->len, DMA_TO_DEVICE);
dev_kfree_skb_any(arvif->beacon);
arvif->beacon = NULL;
}