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mt76: fix possible NULL pointer dereferencing in mt76x2_ampdu_action() 

Initialize mt76_txq pointer after ieee80211_txq pointer check.
Remove space after the pointer cast

Fixes: 7bc04215a6 ("mt76: add driver code for MT76x2e")
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Lorenzo Bianconi 2017-12-14 13:03:16 +01:00 committed by Kalle Valo
parent 70c8de0c15
commit 99ac5327e9
1 changed files with 3 additions and 1 deletions
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4
drivers/net/wireless/mediatek/mt76/mt76x2_main.c
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@ -465,13 +465,15 @@ mt76x2_ampdu_action(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct mt76x2_dev *dev = hw->priv;
struct mt76x2_sta *msta = (struct mt76x2_sta *) sta->drv_priv;
struct ieee80211_txq *txq = sta->txq[params->tid];
struct mt76_txq *mtxq = (struct mt76_txq *) txq->drv_priv;
u16 tid = params->tid;
u16 *ssn = &params->ssn;
struct mt76_txq *mtxq;
if (!txq)
return -EINVAL;
mtxq = (struct mt76_txq *)txq->drv_priv;
switch (action) {
case IEEE80211_AMPDU_RX_START:
mt76_set(dev, MT_WCID_ADDR(msta->wcid.idx) + 4, BIT(16 + tid));