[patch 087/100] KVM: fix kvm_vm_ioctl_deassign_device

[Chris Wright]

-stable review patch.  If anyone has any objections, please let us know.
---------------------

From: Weidong Han <weidong.han@xxxxxxxxx>

upstream commit: 4a906e49f103c2e544148a209ba1db316510799f

only need to set assigned_dev_id for deassignment, use
match->flags to judge and deassign it.

Acked-by: Mark McLoughlin <markmc@xxxxxxxxxx>
Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
Signed-off-by: Chris Wright <chrisw@xxxxxxxxxxxx>
---
 virt/kvm/kvm_main.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -563,7 +563,7 @@ static int kvm_vm_ioctl_deassign_device(
 		goto out;
 	}
 
-	if (assigned_dev->flags & KVM_DEV_ASSIGN_ENABLE_IOMMU)
+	if (match->flags & KVM_DEV_ASSIGN_ENABLE_IOMMU)
 		kvm_deassign_device(kvm, match);
 
 	kvm_free_assigned_device(kvm, match);

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