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wifi: mt76: mt76x0: fix oob access in mt76x0_phy_get_target_power

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After 'commit ba45841ca5 ("wifi: mt76: mt76x02: simplify struct
mt76x02_rate_power")', mt76x02 relies on ht[0-7] rate_power data for
vht mcs{0,7}, while it uses vth[0-1] rate_power for vht mcs {8,9}.
Fix a possible out-of-bound access in mt76x0_phy_get_target_power routine.

Fixes: ba45841ca5 ("wifi: mt76: mt76x02: simplify struct mt76x02_rate_power")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi
2022-12-05 17:59:04 +01:00
committed by Felix Fietkau
parent 54ccb836ff
commit 6e1abc51c9
1 changed files with 6 additions and 1 deletions
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7
drivers/net/wireless/mediatek/mt76/mt76x0/phy.c
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@@ -642,7 +642,12 @@ mt76x0_phy_get_target_power(struct mt76x02_dev *dev, u8 tx_mode,
if (tx_rate > 9)
return -EINVAL;
*target_power = cur_power + dev->rate_power.vht[tx_rate];
*target_power = cur_power;
if (tx_rate > 7)
*target_power += dev->rate_power.vht[tx_rate - 8];
else
*target_power += dev->rate_power.ht[tx_rate];
*target_pa_power = mt76x0_phy_get_rf_pa_mode(dev, 1, tx_rate);
break;
default: