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| author | Mark McLoughlin <markmc@redhat.com> | 2008-12-01 13:57:47 +0000 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2008-12-31 16:55:06 +0200 |
| commit | f29b2673d3fc7ae38ec22922e9cdc75ee37386b5 (patch) | |
| tree | 8e6a76addf0f35382525a68971faf3f108a09887 /virt | |
| parent | fdd897e6b5253a45b633f7d334cf3e150bbaf386 (diff) | |
| download | lwn-f29b2673d3fc7ae38ec22922e9cdc75ee37386b5.tar.gz lwn-f29b2673d3fc7ae38ec22922e9cdc75ee37386b5.zip | |
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.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 8dab7cedd50b..63fd88209439 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); |