aboutsummaryrefslogtreecommitdiff
path: root/virt
diff options
context:
space:
mode:
authorMark McLoughlin <markmc@redhat.com>2008-12-01 13:57:49 +0000
committerAvi Kivity <avi@redhat.com>2008-12-31 16:55:07 +0200
commit4a643be8c9b8d3c1ae8f5ccd377daaa85bd57e0c (patch)
tree6c7caf6878cbd439a0445e07f1ad9a852f8498f4 /virt
parent61552367b2ce5e9bea6b6af670ec80aea386f34e (diff)
downloadlinux-4a643be8c9b8d3c1ae8f5ccd377daaa85bd57e0c.tar.gz
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>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/kvm_main.c29
1 files changed, 22 insertions, 7 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 63fd8820943..e41d39d6b0e 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);