dect
/
linux-2.6
Archived
13
0
Fork 0
Code Releases Activity

ibmveth: Fix DMA unmap error 

Commit 6e8ab30ec6 (ibmveth: Add scatter-gather support) introduced a
DMA mapping API inconsistency resulting in dma_unmap_page getting
called on memory mapped via dma_map_single. This was seen when
CONFIG_DMA_API_DEBUG was enabled. Fix up this API usage inconsistency.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Acked-by: Anton Blanchard <anton@samba.org>
Cc: <stable@kernel.org> # v2.6.37+
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Brian King 2011-09-07 14:41:03 +00:00 committed by David S. Miller
parent 52b9aca7ae
commit 33a48ab105
1 changed files with 6 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

7
drivers/net/ibmveth.c
View File

@ -1026,7 +1026,12 @@ retry_bounce:
netdev->stats.tx_bytes += skb->len;
}
for (i = 0; i < skb_shinfo(skb)->nr_frags + 1; i++)
dma_unmap_single(&adapter->vdev->dev,
descs[0].fields.address,
descs[0].fields.flags_len & IBMVETH_BUF_LEN_MASK,
DMA_TO_DEVICE);
for (i = 1; i < skb_shinfo(skb)->nr_frags + 1; i++)
dma_unmap_page(&adapter->vdev->dev, descs[i].fields.address,
descs[i].fields.flags_len & IBMVETH_BUF_LEN_MASK,
DMA_TO_DEVICE);