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mt76: mt7915: fix tx skb dma unmap

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[ Upstream commit 7dcf3c04f0 ]

The first pointer in the txp needs to be unmapped as well, otherwise it will
leak DMA mapping entries

Reported-by: Ben Greear <greearb@candelatech.com>
Fixes: 27d5c528a7 ("mt76: fix double DMA unmap of the first buffer on 7615/7915")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Felix Fietkau
2021-02-13 18:44:10 +01:00
committed by Greg Kroah-Hartman
parent 75bc5f779a
commit 4e7914ce23
1 changed files with 1 additions and 1 deletions
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2
drivers/net/wireless/mediatek/mt76/mt7915/mac.c
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@@ -856,7 +856,7 @@ void mt7915_txp_skb_unmap(struct mt76_dev *dev,
int i;
txp = mt7915_txwi_to_txp(dev, t);
for (i = 1; i < txp->nbuf; i++)
for (i = 0; i < txp->nbuf; i++)
dma_unmap_single(dev->dev, le32_to_cpu(txp->buf[i]),
le16_to_cpu(txp->len[i]), DMA_TO_DEVICE);
}