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ramips: DMA map the correct RX skb size 

The skb_reserve call prior to DMA mapping the RX skb reduced the skb
data len by 2. To not allow DMA to write behind the skb we should pass
the correct skb data len to the device.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24123 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Gabor Juhos 2010-11-24 10:01:16 +00:00
parent 77a769e423
commit 00bd3f47c4
1 changed files with 2 additions and 2 deletions
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4
target/linux/ramips/files/drivers/net/ramips.c
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@ -177,7 +177,7 @@ ramips_alloc_dma(struct raeth_priv *re)
skb_reserve(new_skb, 2); skb_reserve(new_skb, 2);
re->rx[i].rxd1 = dma_map_single(NULL, re->rx[i].rxd1 = dma_map_single(NULL,
new_skb->data, new_skb->data,
MAX_RX_LENGTH + 2, MAX_RX_LENGTH,
DMA_FROM_DEVICE); DMA_FROM_DEVICE);
re->rx[i].rxd2 |= RX_DMA_LSO; re->rx[i].rxd2 |= RX_DMA_LSO;
re->rx_skb[i] = new_skb; re->rx_skb[i] = new_skb;
@ -288,7 +288,7 @@ ramips_eth_rx_hw(unsigned long ptr)
skb_reserve(new_skb, 2); skb_reserve(new_skb, 2);
priv->rx[rx].rxd1 = dma_map_single(NULL, priv->rx[rx].rxd1 = dma_map_single(NULL,
new_skb->data, new_skb->data,
MAX_RX_LENGTH + 2, MAX_RX_LENGTH,
DMA_FROM_DEVICE); DMA_FROM_DEVICE);
} }