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authorMark McLoughlin <markmc@redhat.com>2008-12-01 13:57:47 +0000
committerAvi Kivity <avi@redhat.com>2008-12-31 16:55:06 +0200
commitf29b2673d3fc7ae38ec22922e9cdc75ee37386b5 (patch)
tree8e6a76addf0f35382525a68971faf3f108a09887 /virt
parentfdd897e6b5253a45b633f7d334cf3e150bbaf386 (diff)
downloadlinux-f29b2673d3fc7ae38ec22922e9cdc75ee37386b5.tar.gz
KVM: don't free an unallocated irq source id
Set assigned_dev->irq_source_id to -1 so that we can avoid freeing a source ID which we never allocated. Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/kvm_main.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 8dab7cedd50..63fd8820943 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -210,7 +210,10 @@ static void kvm_free_assigned_device(struct kvm *kvm,
pci_disable_msi(assigned_dev->dev);
kvm_unregister_irq_ack_notifier(&assigned_dev->ack_notifier);
- kvm_free_irq_source_id(kvm, assigned_dev->irq_source_id);
+
+ if (assigned_dev->irq_source_id != -1)
+ kvm_free_irq_source_id(kvm, assigned_dev->irq_source_id);
+ assigned_dev->irq_source_id = -1;
if (cancel_work_sync(&assigned_dev->interrupt_work))
/* We had pending work. That means we will have to take
@@ -466,7 +469,7 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
match->host_busnr = assigned_dev->busnr;
match->host_devfn = assigned_dev->devfn;
match->dev = dev;
-
+ match->irq_source_id = -1;
match->kvm = kvm;
list_add(&match->list, &kvm->arch.assigned_dev_head);