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x86/amd-iommu: Don't detach device from pt domain on driver unbind

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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@amd.com>
This commit is contained in:
Joerg Roedel
2009-09-01 12:22:22 +02:00
parent 21129f786f
commit a1ca331c8a
1 changed files with 2 additions and 0 deletions
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2
arch/x86/kernel/amd_iommu.c
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@@ -1195,6 +1195,8 @@ static int device_change_notifier(struct notifier_block *nb,
case BUS_NOTIFY_UNBOUND_DRIVER: case BUS_NOTIFY_UNBOUND_DRIVER:
if (!domain) if (!domain)
goto out; goto out;
if (iommu_pass_through)
break;
detach_device(domain, devid); detach_device(domain, devid);
break; break;
case BUS_NOTIFY_ADD_DEVICE: case BUS_NOTIFY_ADD_DEVICE: