From 71ff3bca2f70264effe8cbbdd5bc10cf6be5f2f0 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <joerg.roedel@amd.com>
Date: Mon, 8 Jun 2009 13:47:33 -0700
Subject: [PATCH] amd-iommu: detach device explicitly before attaching it to a
 new domain

This fixes a bug with a device that could not be assigned to a KVM guest
because it is still assigned to a dma_ops protection domain.

[chrisw: simply remove WARN_ON(), will always fire since dev->driver
will be pci-sub]

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
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