From: Ben Hutchings <ben.hutchings@codethink.co.uk>
Date: Tue, 27 Jan 2015 00:49:47 +0000 (+0000)
Subject: sh_eth: Check for DMA mapping errors on transmit
X-Git-Tag: fixes-v4.0-rc1~235^2~5^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=aa3933b87309c61b4fa4bb93c1ad4c3f08afb1b8;p=pandora-kernel.git

sh_eth: Check for DMA mapping errors on transmit

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>
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