| From 04801c29833152b9a5b0abb501b5bfb8e2e140c0 Mon Sep 17 00:00:00 2001 |
| From: Sasha Levin <sashal@kernel.org> |
| Date: Sat, 13 Feb 2021 18:42:15 +0100 |
| Subject: mt76: mt7615: fix tx skb dma unmap |
| |
| From: Felix Fietkau <nbd@nbd.name> |
| |
| [ Upstream commit ebee7885bb12a8fe2c2f9bac87dbd87a05b645f9 ] |
| |
| The first pointer in the txp needs to be unmapped as well, otherwise it will |
| leak DMA mapping entries |
| |
| Fixes: 27d5c528a7ca ("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> |
| --- |
| drivers/net/wireless/mediatek/mt76/mt7615/mac.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c |
| index cb8bf6a29b52..34a88eab74ab 100644 |
| --- a/drivers/net/wireless/mediatek/mt76/mt7615/mac.c |
| +++ b/drivers/net/wireless/mediatek/mt76/mt7615/mac.c |
| @@ -688,7 +688,7 @@ mt7615_txp_skb_unmap_fw(struct mt76_dev *dev, struct mt7615_fw_txp *txp) |
| { |
| int i; |
| |
| - 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); |
| } |
| -- |
| 2.30.2 |
| |
