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mt76: mt7915: fix possible NULL pointer dereference in mt7915_mac_fill_rx_vector

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Fix possible NULL pointer dereference in mt7915_mac_fill_rx_vector
routine if the chip does not support dbdc and the hw reports band_idx
set to 1.

Fixes: 78fc30a21cf11 ("mt76: mt7915: move testmode data from dev to phy")
Signed-off-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Lorenzo Bianconi
2022-04-07 12:22:27 +02:00
committed by Felix Fietkau
parent ec0e9f4da3
commit 5a87be892b
1 changed files with 5 additions and 2 deletions
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mt7915/mac.c
+5 -2
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@@ -864,8 +864,11 @@ mt7915_mac_fill_rx_vector(struct mt7915_dev *dev, struct sk_buff *skb)
int i;
band_idx = le32_get_bits(rxv_hdr[1], MT_RXV_HDR_BAND_IDX);
if (band_idx && !phy->band_idx)
if (band_idx && !phy->band_idx) {
phy = mt7915_ext_phy(dev);
if (!phy)
goto out;
}
rcpi = le32_to_cpu(rxv[6]);
ib_rssi = le32_to_cpu(rxv[7]);
@@ -890,8 +893,8 @@ mt7915_mac_fill_rx_vector(struct mt7915_dev *dev, struct sk_buff *skb)
phy->test.last_freq_offset = foe;
phy->test.last_snr = snr;
out:
#endif
dev_kfree_skb(skb);
}