From: Will Deacon <will.deacon@arm.com>
Date: Fri, 16 Jan 2015 17:02:15 +0000 (+0100)
Subject: ARM: 8289/1: dma-mapping: use to_dma_iommu_mapping instead of accessing archdata
X-Git-Tag: omap-for-v4.1/fixes-rc1~142^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=89cfdb19a88872088a8cf69621e55d41c379f02f;p=pandora-kernel.git

ARM: 8289/1: dma-mapping: use to_dma_iommu_mapping instead of accessing archdata

When using the IOMMU-backed DMA ops for a device, we store a pointer to
the dma_iommu_mapping structure (used to keep track of the address
space) in the archdata.mapping field of the struct device.

Rather than access this field directly, use the to_dma_iommu_mapping
helper in dma-mapping, so that we don't really care where the mapping
information is held.

Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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