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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: 33920b2bf0483 ("mt76: add support for setting mcast rate")
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Lorenzo Bianconi
2021-11-21 20:26:13 +01:00
committed by Felix Fietkau
parent c1574466c7
commit 9680a17b0a
1 changed files with 1 additions and 1 deletions
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mt7921/mac.c
+1 -1
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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 */