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: v3.2.24~84
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f2d391c109ecc377d55f7865ac8ea26ac8921ab7;p=pandora-kernel.git

iommu/amd: Initialize dma_ops for hotplug and sriov devices

commit ac1534a55d1e87d59a21c09c570605933b551480 upstream.

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>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
[bwh: Backported to 3.2:
 - Adjust context
 - Use global iommu_pass_through; there is no per-device pass_through]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

Reading git-diff-tree failed