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dma: fix rx dma unmap length

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Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2015-06-13 09:26:41 +02:00
parent 5ed83c47b4
commit 98253e9d5b
1 changed files with 2 additions and 2 deletions
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dma.c
+2 -2
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@@ -169,7 +169,6 @@ mt76_dma_rx_fill(struct mt76_dev *dev, struct mt76_queue *q)
break;
addr = dma_map_single(dev->dev, buf, len, DMA_FROM_DEVICE);
if (dma_mapping_error(dev->dev, addr)) {
kfree(buf);
break;
@@ -360,6 +359,7 @@ mt76_rx_get_buf(struct mt76_dev *dev, struct mt76_queue *q, int idx, int *len)
struct mt76_queue_entry *e;
dma_addr_t buf_addr;
void *buf;
int buf_len = SKB_WITH_OVERHEAD(q->buf_size);
e = &q->entry[idx];
buf = e->buf;
@@ -368,7 +368,7 @@ mt76_rx_get_buf(struct mt76_dev *dev, struct mt76_queue *q, int idx, int *len)
u32 ctl = ACCESS_ONCE(q->desc[idx].ctrl);
*len = MT76_GET(MT_DMA_CTL_SD_LEN0, ctl);
}
dma_unmap_single(dev->dev, buf_addr, q->buf_size, DMA_FROM_DEVICE);
dma_unmap_single(dev->dev, buf_addr, buf_len, DMA_FROM_DEVICE);
e->buf = NULL;
return buf;