KVM: Clean up kvm_vm_ioctl_assigned_device

Any arch not supporting device assigment will also not build
assigned-dev.c. So testing for KVM_CAP_DEVICE_DEASSIGNMENT is pointless.
KVM_CAP_ASSIGN_DEV_IRQ is unconditinally set. Moreover, add a default
case for dispatching the ioctl.

Acked-by: Alex Williamson <alex.williamson@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 4 insertions, 5 deletions

diff --git a/virt/kvm/assigned-dev.c b/virt/kvm/assigned-dev.c
index d3892076f93c..ae72ae604c89 100644
--- a/virt/kvm/assigned-dev.c
+++ b/virt/kvm/assigned-dev.c
@@ -674,7 +674,7 @@ long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
                                   unsigned long arg)
 {
         void __user *argp = (void __user *)arg;
-        int r = -ENOTTY;
+        int r;
 
         switch (ioctl) {
         case KVM_ASSIGN_PCI_DEVICE: {
@@ -692,7 +692,6 @@ long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
                 r = -EOPNOTSUPP;
                 break;
         }
-#ifdef KVM_CAP_ASSIGN_DEV_IRQ
         case KVM_ASSIGN_DEV_IRQ: {
                 struct kvm_assigned_irq assigned_irq;
 
@@ -715,8 +714,6 @@ long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
                         goto out;
                 break;
         }
-#endif
-#ifdef KVM_CAP_DEVICE_DEASSIGNMENT
         case KVM_DEASSIGN_PCI_DEVICE: {
                 struct kvm_assigned_pci_dev assigned_dev;
 
@@ -728,7 +725,6 @@ long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
                         goto out;
                 break;
         }
-#endif
 #ifdef KVM_CAP_IRQ_ROUTING
         case KVM_SET_GSI_ROUTING: {
                 struct kvm_irq_routing routing;
@@ -781,6 +777,9 @@ long kvm_vm_ioctl_assigned_device(struct kvm *kvm, unsigned ioctl,
                 break;
         }
 #endif
+        default:
+                r = -ENOTTY;
+                break;
         }
 out:
         return r;