From: Joerg Roedel <joerg.roedel@amd.com>
Date: Thu, 21 Jun 2012 12:52:40 +0000 (+0200)
Subject: iommu/amd: Initialize dma_ops for hotplug and sriov devices
X-Git-Tag: v3.5-rc7~43^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac1534a55d1e87d59a21c09c570605933b551480;p=pandora-kernel.git

iommu/amd: Initialize dma_ops for hotplug and sriov devices

When a device is added to the system at runtime the AMD
IOMMU driver initializes the necessary data structures to
handle translation for it. But it forgets to change the
per-device dma_ops to point to the AMD IOMMU driver. So
mapping actually never happens and all DMA accesses end in
an IO_PAGE_FAULT. Fix this.

Reported-by: Stefan Assmann <sassmann@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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