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authorMichael S. Tsirkin <mst@dev.mellanox.co.il>2007-04-10 18:32:42 +0300
committerRoland Dreier <rolandd@cisco.com>2007-04-10 08:58:30 -0700
commit6371ea3d48e17d4638a91a4a1e0364e56204e418 (patch)
tree8ef123fa72e84c1f9a1fbd6365af02802a61560d /drivers
parent1d426d6418d1914b592c9c307c02e488d9182fa8 (diff)
downloadop-kernel-dev-6371ea3d48e17d4638a91a4a1e0364e56204e418.zip
op-kernel-dev-6371ea3d48e17d4638a91a4a1e0364e56204e418.tar.gz
IPoIB/cm: Fix DMA direction typo
Receive buffers need to be mapped with DMA_FROM_DEVICE. Incorrectly mapping with DMA_TO_DEVICE causes a hard lock on ppc64 machines with an IOMMU. This fixes <https://bugs.openfabrics.org/show_bug.cgi?id=431> Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_cm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_cm.c b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
index e70492d..2b242a4 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_cm.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_cm.c
@@ -131,7 +131,7 @@ static struct sk_buff *ipoib_cm_alloc_rx_skb(struct net_device *dev, int id, int
skb_fill_page_desc(skb, i, page, 0, PAGE_SIZE);
mapping[i + 1] = ib_dma_map_page(priv->ca, skb_shinfo(skb)->frags[i].page,
- 0, PAGE_SIZE, DMA_TO_DEVICE);
+ 0, PAGE_SIZE, DMA_FROM_DEVICE);
if (unlikely(ib_dma_mapping_error(priv->ca, mapping[i + 1])))
goto partial_error;
}
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