msm: iommu: Check if device is already attached

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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>

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Stepan Moskovchenko 2010-11-12 19:29:56 -08:00 • committed by Daniel Walker

parent 2607b0a260

commit 00d4b2bb03

1 changed files with 5 additions and 0 deletions

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arch/arm/mach-msm/iommu.c

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