From: Alex Williamson <alex.williamson@redhat.com>
Date: Fri, 4 Mar 2011 21:52:16 +0000 (-0700)
Subject: intel-iommu: Unlink domain from iommu
X-Git-Tag: v2.6.39-rc5~31^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a97590e56d0d58e1dd262353f7cbd84e81d8e600;p=pandora-kernel.git

intel-iommu: Unlink domain from iommu

When we remove a device, we unlink the iommu from the domain, but
we never do the reverse unlinking of the domain from the iommu.
This means that we never clear iommu->domain_ids, eventually leading
to resource exhaustion if we repeatedly bind and unbind a device
to a driver.  Also free empty domains to avoid a resource leak.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Donald Dutile <ddutile@redhat.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
Cc: stable@kernel.org
---

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