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mt76: mt7615: check sta_rates pointer in mt7615_sta_rate_tbl_update

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[ Upstream commit 6a6f457ed5 ]

Check sta_rates pointer value in mt7615_sta_rate_tbl_update routine
since minstrel_ht_update_rates can fail allocating rates array.

Fixes: 04b8e65922 ("mt76: add mac80211 driver for MT7615 PCIe-based chipsets")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Lorenzo Bianconi 2022-01-22 15:58:58 +01:00 committed by Greg Kroah-Hartman
parent 2430af1241
commit 2ac4f049db
1 changed files with 3 additions and 0 deletions
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3
drivers/net/wireless/mediatek/mt76/mt7615/main.c
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@ -673,6 +673,9 @@ static void mt7615_sta_rate_tbl_update(struct ieee80211_hw *hw,
struct ieee80211_sta_rates *sta_rates = rcu_dereference(sta->rates); struct ieee80211_sta_rates *sta_rates = rcu_dereference(sta->rates);
int i; int i;
if (!sta_rates)
return;
spin_lock_bh(&dev->mt76.lock); spin_lock_bh(&dev->mt76.lock);
for (i = 0; i < ARRAY_SIZE(msta->rates); i++) { for (i = 0; i < ARRAY_SIZE(msta->rates); i++) {
msta->rates[i].idx = sta_rates->rate[i].idx; msta->rates[i].idx = sta_rates->rate[i].idx;