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mt76: fix possible NULL pointer dereferencing in mt76x2_mac_write_txwi() 

Verify wcid is not NULL before dereferencing the pointer to initialize
txwi rate/power info

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 13:03:17 +01:00 committed by Kalle Valo
parent 99ac5327e9
commit 98051872fd
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/mediatek/mt76/mt76x2_mac.c
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@ -186,7 +186,7 @@ void mt76x2_mac_write_txwi(struct mt76x2_dev *dev, struct mt76x2_txwi *txwi,
txwi->pktid = 1;
spin_lock_bh(&dev->mt76.lock);
if (rate->idx < 0 || !rate->count) {
if (wcid && (rate->idx < 0 || !rate->count)) {
txwi->rate = wcid->tx_rate;
max_txpwr_adj = wcid->max_txpwr_adj;
nss = wcid->tx_rate_nss;