From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Date: Fri, 2 Sep 2011 17:32:30 +0000 (-0400)
Subject: iommu/omap-iovmm: support non page-aligned buffers in iommu_vmap
X-Git-Tag: v3.2-rc1~117^2^3~4
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=329d8d3b474923087f6988737ff12137b58e55cc;p=pandora-kernel.git

iommu/omap-iovmm: support non page-aligned buffers in iommu_vmap

omap_iovmm requires page-aligned buffers, and that sometimes causes
omap3isp failures (i.e. whenever the buffer passed from userspace is not
page-aligned).

Remove this limitation by rounding the address of the first page entry
down, and adding the offset back to the device address.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
[ohad@wizery.com: rebased, but tested only with aligned buffers]
[ohad@wizery.com: slightly edited the commit log]
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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