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mt76: mt7921: fix possible NULL pointer dereference in mt7921_mac_write_txwi

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Fix a possible NULL pointer deference issue in mt7921_mac_write_txwi
routine if vif is NULL.

Fixes: 33920b2bf0 ("mt76: add support for setting mcast rate")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi
2021-11-18 11:50:27 +01:00
committed by Felix Fietkau
parent d4f3d1c4d3
commit ec2ebc1c5a
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/mediatek/mt76/mt7921/mac.c
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@@ -981,7 +981,7 @@ void mt7921_mac_write_txwi(struct mt7921_dev *dev, __le32 *txwi,
mt7921_mac_write_txwi_80211(dev, txwi, skb, key);
if (txwi[2] & cpu_to_le32(MT_TXD2_FIX_RATE)) {
int rateidx = ffs(vif->bss_conf.basic_rates) - 1;
int rateidx = vif ? ffs(vif->bss_conf.basic_rates) - 1 : 0;
u16 rate, mode;
/* hardware won't add HTC for mgmt/ctrl frame */