From 43b412bedb782e27a8771b61870dd45a24975266 Mon Sep 17 00:00:00 2001
From: Will Deacon <will.deacon@arm.com>
Date: Tue, 15 Jul 2014 11:22:24 +0100
Subject: [PATCH] iommu/arm-smmu: fix s2cr and smr teardown on device detach
 from domain

When we attach a device to a domain, we configure the SMRs (if we have
any) to match the Stream IDs for the corresponding SMMU master and
program the s2crs accordingly. However, on detach we tear down the s2crs
assuming stream-indexing (as opposed to stream-matching) and SMRs
assuming they are present.

This patch fixes the device detach code so that it operates as a
converse of the attach code.

Cc: <stable@vger.kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
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