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Message-Id: <201109072137.p87LbV51024857@d01av04.pok.ibm.com> Date: Wed, 07 Sep 2011 16:37:34 -0500 From: Brian King <brking@...ux.vnet.ibm.com> To: netdev@...r.kernel.org Cc: santil@...ux.vnet.ibm.com, anton@...ba.org, brking@...ux.vnet.ibm.com Subject: [PATCH 1/1] ibmveth: Fix DMA unmap error Commit 6e8ab30ec677925e8999a9f5bdb028736d22d48c 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@...ux.vnet.ibm.com> --- drivers/net/ibmveth.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff -puN drivers/net/ibmveth.c~ibmveth_fix_mapping_issue drivers/net/ibmveth.c --- linux-2.6/drivers/net/ibmveth.c~ibmveth_fix_mapping_issue 2011-09-07 16:28:19.000000000 -0500 +++ linux-2.6-bjking1/drivers/net/ibmveth.c 2011-09-07 16:28:19.000000000 -0500 @@ -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); _ -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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