From: Alexey Kardashevskiy <aik@ozlabs.ru>
Date: Fri, 5 Jun 2015 06:34:56 +0000 (+1000)
Subject: powerpc/iommu: Put IOMMU group explicitly
X-Git-Tag: omap-for-v4.3/legacy-v2-signed~168^2~49
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac9a58891a965216e9cb549a0a2012b97e3abcce;p=pandora-kernel.git

powerpc/iommu: Put IOMMU group explicitly

So far an iommu_table lifetime was the same as PE. Dynamic DMA windows
will change this and iommu_free_table() will not always require
the group to be released.

This moves iommu_group_put() out of iommu_free_table().

This adds a iommu_pseries_free_table() helper which does
iommu_group_put() and iommu_free_table(). Later it will be
changed to receive a table_group and we will have to change less
lines then.

This should cause no behavioural change.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Reviewed-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
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