From: juhosg Date: Wed, 24 Nov 2010 10:01:16 +0000 (+0000) Subject: ramips: DMA map the correct RX skb size X-Git-Url: https://git.rohieb.name/openwrt.git/commitdiff_plain/37b545f00f84de7544744792a246cd9ae7917675 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 git-svn-id: svn://svn.openwrt.org/openwrt/trunk@24123 3c298f89-4303-0410-b956-a3cf2f4a3e73 --- diff --git a/target/linux/ramips/files/drivers/net/ramips.c b/target/linux/ramips/files/drivers/net/ramips.c index e3c4f13d4..1f3c35aa9 100644 --- a/target/linux/ramips/files/drivers/net/ramips.c +++ b/target/linux/ramips/files/drivers/net/ramips.c @@ -177,7 +177,7 @@ ramips_alloc_dma(struct raeth_priv *re) skb_reserve(new_skb, 2); re->rx[i].rxd1 = dma_map_single(NULL, new_skb->data, - MAX_RX_LENGTH + 2, + MAX_RX_LENGTH, DMA_FROM_DEVICE); re->rx[i].rxd2 |= RX_DMA_LSO; re->rx_skb[i] = new_skb; @@ -288,7 +288,7 @@ ramips_eth_rx_hw(unsigned long ptr) skb_reserve(new_skb, 2); priv->rx[rx].rxd1 = dma_map_single(NULL, new_skb->data, - MAX_RX_LENGTH + 2, + MAX_RX_LENGTH, DMA_FROM_DEVICE); }