From: Will Deacon <will.deacon@arm.com>
Date: Wed, 27 Aug 2014 16:52:44 +0000 (+0100)
Subject: arm: dma-mapping: plumb our iommu mapping ops into arch_setup_dma_ops
X-Git-Tag: omap-for-v3.19/fixes-rc1~63^2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4bb25789ed28228a;p=pandora-kernel.git

arm: dma-mapping: plumb our iommu mapping ops into arch_setup_dma_ops

This patch plumbs the existing ARM IOMMU DMA infrastructure (which isn't
actually called outside of a few drivers) into arch_setup_dma_ops, so
that we can use IOMMUs for DMA transfers in a more generic fashion.

Since this significantly complicates the arch_setup_dma_ops function,
it is moved out of line into dma-mapping.c. If CONFIG_ARM_DMA_USE_IOMMU
is not set, the iommu parameter is ignored and the normal ops are used
instead.

Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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