From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Date: Fri, 28 Feb 2014 15:37:10 +0000 (+0000)
Subject: iommu/arm-smmu: Return 0 on unmap failure
X-Git-Tag: omap-for-v3.16/pm-signed~69^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=16c50dcfc4c186ed09a4d80fbd511492d024a1c5;p=pandora-kernel.git

iommu/arm-smmu: Return 0 on unmap failure

The IOMMU core expects the unmap operation to return the number of bytes
that have been unmapped or 0 on failure, a negative return value being
treated like a number of bytes.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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