diff options
| author | Mark McLoughlin <markmc@redhat.com> | 2008-12-01 14:57:49 +0100 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2008-12-31 15:55:07 +0100 |
| commit | 4a643be8c9b8d3c1ae8f5ccd377daaa85bd57e0c (patch) | |
| tree | 6c7caf6878cbd439a0445e07f1ad9a852f8498f4 | |
| parent | KVM: add KVM_USERSPACE_IRQ_SOURCE_ID assertions (diff) | |
| download | linux-4a643be8c9b8d3c1ae8f5ccd377daaa85bd57e0c.tar.xz linux-4a643be8c9b8d3c1ae8f5ccd377daaa85bd57e0c.zip | |
KVM: split out kvm_free_assigned_irq()
Split out the logic corresponding to undoing assign_irq() and
clean it up a bit.
Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
| -rw-r--r-- | virt/kvm/kvm_main.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 63fd88209439..e41d39d6b0ef 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -200,14 +200,11 @@ static void kvm_assigned_dev_ack_irq(struct kvm_irq_ack_notifier *kian) enable_irq(dev->host_irq); } -static void kvm_free_assigned_device(struct kvm *kvm, - struct kvm_assigned_dev_kernel - *assigned_dev) +static void kvm_free_assigned_irq(struct kvm *kvm, + struct kvm_assigned_dev_kernel *assigned_dev) { - if (irqchip_in_kernel(kvm) && assigned_dev->irq_requested_type) - free_irq(assigned_dev->host_irq, (void *)assigned_dev); - if (assigned_dev->irq_requested_type & KVM_ASSIGNED_DEV_HOST_MSI) - pci_disable_msi(assigned_dev->dev); + if (!irqchip_in_kernel(kvm)) + return; kvm_unregister_irq_ack_notifier(&assigned_dev->ack_notifier); @@ -215,12 +212,30 @@ static void kvm_free_assigned_device(struct kvm *kvm, kvm_free_irq_source_id(kvm, assigned_dev->irq_source_id); assigned_dev->irq_source_id = -1; + if (!assigned_dev->irq_requested_type) + return; + if (cancel_work_sync(&assigned_dev->interrupt_work)) /* We had pending work. That means we will have to take * care of kvm_put_kvm. */ kvm_put_kvm(kvm); + free_irq(assigned_dev->host_irq, (void *)assigned_dev); + + if (assigned_dev->irq_requested_type & KVM_ASSIGNED_DEV_HOST_MSI) + pci_disable_msi(assigned_dev->dev); + + assigned_dev->irq_requested_type = 0; +} + + +static void kvm_free_assigned_device(struct kvm *kvm, + struct kvm_assigned_dev_kernel + *assigned_dev) +{ + kvm_free_assigned_irq(kvm, assigned_dev); + pci_reset_function(assigned_dev->dev); pci_release_regions(assigned_dev->dev); |