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KVM: don't free an unallocated irq source id

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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>
This commit is contained in:
Mark McLoughlin 2008-12-01 13:57:47 +00:00 committed by Avi Kivity
parent fdd897e6b5
commit f29b2673d3
1 changed files with 5 additions and 2 deletions
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7
virt/kvm/kvm_main.c
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@ -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);