1 files changed, 45 insertions, 41 deletions

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index c8a2793626e..61eddbeabeb 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -166,6 +166,43 @@ 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)
+{
+        if (irqchip_in_kernel(kvm) && assigned_dev->irq_requested)
+                free_irq(assigned_dev->host_irq, (void *)assigned_dev);
+
+        kvm_unregister_irq_ack_notifier(kvm, &assigned_dev->ack_notifier);
+
+        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);
+
+        pci_release_regions(assigned_dev->dev);
+        pci_disable_device(assigned_dev->dev);
+        pci_dev_put(assigned_dev->dev);
+
+        list_del(&assigned_dev->list);
+        kfree(assigned_dev);
+}
+
+static void kvm_free_all_assigned_devices(struct kvm *kvm)
+{
+        struct list_head *ptr, *ptr2;
+        struct kvm_assigned_dev_kernel *assigned_dev;
+
+        list_for_each_safe(ptr, ptr2, &kvm->arch.assigned_dev_head) {
+                assigned_dev = list_entry(ptr,
+                                          struct kvm_assigned_dev_kernel,
+                                          list);
+
+                kvm_free_assigned_device(kvm, assigned_dev);
+        }
+}
+
 static int kvm_vm_ioctl_assign_irq(struct kvm *kvm,
                                    struct kvm_assigned_irq
                                    *assigned_irq)
@@ -194,8 +231,8 @@ static int kvm_vm_ioctl_assign_irq(struct kvm *kvm,
 
         if (irqchip_in_kernel(kvm)) {
                 if (!capable(CAP_SYS_RAWIO)) {
-                        return -EPERM;
-                        goto out;
+                        r = -EPERM;
+                        goto out_release;
                 }
 
                 if (assigned_irq->host_irq)
@@ -214,17 +251,18 @@ static int kvm_vm_ioctl_assign_irq(struct kvm *kvm,
                  */
                 if (request_irq(match->host_irq, kvm_assigned_dev_intr, 0,
                                 "kvm_assigned_device", (void *)match)) {
-                        printk(KERN_INFO "%s: couldn't allocate irq for pv "
-                               "device\n", __func__);
                         r = -EIO;
-                        goto out;
+                        goto out_release;
                 }
         }
 
         match->irq_requested = true;
-out:
         mutex_unlock(&kvm->lock);
         return r;
+out_release:
+        mutex_unlock(&kvm->lock);
+        kvm_free_assigned_device(kvm, match);
+        return r;
 }
 
 static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
@@ -300,40 +338,6 @@ out_free:
         return r;
 }
 
-static void kvm_free_assigned_devices(struct kvm *kvm)
-{
-        struct list_head *ptr, *ptr2;
-        struct kvm_assigned_dev_kernel *assigned_dev;
-
-        list_for_each_safe(ptr, ptr2, &kvm->arch.assigned_dev_head) {
-                assigned_dev = list_entry(ptr,
-                                          struct kvm_assigned_dev_kernel,
-                                          list);
-
-                if (irqchip_in_kernel(kvm) && assigned_dev->irq_requested) {
-                        free_irq(assigned_dev->host_irq,
-                                 (void *)assigned_dev);
-
-                        kvm_unregister_irq_ack_notifier(kvm,
-                                                        &assigned_dev->
-                                                        ack_notifier);
-                }
-
-                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);
-
-                pci_release_regions(assigned_dev->dev);
-                pci_disable_device(assigned_dev->dev);
-                pci_dev_put(assigned_dev->dev);
-
-                list_del(&assigned_dev->list);
-                kfree(assigned_dev);
-        }
-}
-
 unsigned long segment_base(u16 selector)
 {
         struct descriptor_table gdt;
@@ -4296,7 +4300,7 @@ static void kvm_free_vcpus(struct kvm *kvm)
 void kvm_arch_destroy_vm(struct kvm *kvm)
 {
         kvm_iommu_unmap_guest(kvm);
-        kvm_free_assigned_devices(kvm);
+        kvm_free_all_assigned_devices(kvm);
         kvm_free_pit(kvm);
         kfree(kvm->arch.vpic);
         kfree(kvm->arch.vioapic);