From: Will Deacon <will.deacon@arm.com>
Date: Mon, 10 Jun 2013 18:34:39 +0000 (+0100)
Subject: ARM: dma-mapping: convert DMA direction into IOMMU protection attributes
X-Git-Tag: v3.11-rc1~78^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=13987d68bcf476a93fa864ea4e58755f1bc4bd30;p=pandora-kernel.git

ARM: dma-mapping: convert DMA direction into IOMMU protection attributes

IOMMU mappings take a prot parameter, identifying the protection bits
to enforce on the newly created mapping (READ or WRITE). The ARM
dma-mapping framework currently just passes 0 as the prot argument,
resulting in faulting mappings.

This patch infers the protection attributes based on the direction of
the DMA transfer.

Cc: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---

Reading git-diff-tree failed