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sh_eth: Check for DMA mapping errors on transmit
authorBen Hutchings <ben.hutchings@codethink.co.uk>
Tue, 27 Jan 2015 00:49:47 +0000 (00:49 +0000)
committerDavid S. Miller <davem@davemloft.net>
Tue, 27 Jan 2015 08:18:53 +0000 (00:18 -0800)
dma_map_single() may fail if an IOMMU or swiotlb is in use, so
we need to check for this.

Signed-off-by: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>

No differences found
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