From: Alexey Kardashevskiy <aik@ozlabs.ru>
Date: Fri, 5 Jun 2015 06:34:57 +0000 (+1000)
Subject: powerpc/iommu: Always release iommu_table in iommu_free_table()
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~139^2~48
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8aca92d82d9f259e0b6b0c81e5eb9baaf471e6ad;p=pandora-kernel.git

powerpc/iommu: Always release iommu_table in iommu_free_table()

At the moment iommu_free_table() only releases memory if
the table was initialized for the platform code use, i.e. it had
it_map initialized (which purpose is to track DMA memory space use).

With dynamic DMA windows, we will need to be able to release
iommu_table even if it was used for VFIO in which case it_map is NULL
so does the patch.

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

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