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msm: iommu: Check if device is already attached
authorStepan Moskovchenko <stepanm@codeaurora.org>
Sat, 13 Nov 2010 03:29:56 +0000 (19:29 -0800)
committerDaniel Walker <dwalker@codeaurora.org>
Wed, 1 Dec 2010 00:03:51 +0000 (16:03 -0800)
commit00d4b2bb03b9ed27f28336b0a68f2bd7f67caa40
tree738995cfae9dbea6649668539561f97c3e86694ftree | snapshot (tar.gz zip)
parent2607b0a26094b2d2d174c3e27b2ecc9c49d86f40commit | diff
msm: iommu: Check if device is already attached

An IOMMU device can only be attached to one IOMMU domain at
any given time. Check whether the device is already
attached to a domain before allowing it to be attached to
another domain. If so, return busy.

Signed-off-by: Stepan Moskovchenko <stepanm@codeaurora.org>
Signed-off-by: Daniel Walker <dwalker@codeaurora.org>
arch/arm/mach-msm/iommu.c diff | blob | blame | history