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Message-ID: <1252056994-31980-8-git-send-email-joerg.roedel@amd.com>
Date: Fri, 4 Sep 2009 11:36:33 +0200
From: Joerg Roedel <joerg.roedel@....com>
To: iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
CC: Joerg Roedel <joerg.roedel@....com>
Subject: [PATCH 7/8] x86/amd-iommu: Don't detach device from pt domain on driver unbind
This patch makes sure a device is not detached from the
passthrough domain when the device driver is unloaded or
does otherwise release the device.
Signed-off-by: Joerg Roedel <joerg.roedel@....com>
---
arch/x86/kernel/amd_iommu.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index a8e74c3..12a541d 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1195,6 +1195,8 @@ static int device_change_notifier(struct notifier_block *nb,
case BUS_NOTIFY_UNBOUND_DRIVER:
if (!domain)
goto out;
+ if (iommu_pass_through)
+ break;
detach_device(domain, devid);
break;
case BUS_NOTIFY_ADD_DEVICE:
--
1.6.3.3
--
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