KVM: x86: fix the error of ioctl KVM_IRQ_LINE if no irq chip

If no irq chip in kernel, ioctl KVM_IRQ_LINE will return -EFAULT.
But I see in other place such as KVM_[GET|SET]IRQCHIP, -ENXIO is
return. So this patch used -ENXIO instead of -EFAULT.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index a1cf87fe9f3ac3de4463f13c899ea86e2a325485..7a8fe9051ecff40c3ba843f0d0c92e6047e8e34c 100644 (file)
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -2836,11 +2836,13 @@ long kvm_arch_vm_ioctl(struct file *filp,
                r = -EFAULT;
                if (copy_from_user(&irq_event, argp, sizeof irq_event))
                        goto out;
+               r = -ENXIO;
                if (irqchip_in_kernel(kvm)) {
                        __s32 status;
                        status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID,
                                        irq_event.irq, irq_event.level);
                        if (ioctl == KVM_IRQ_LINE_STATUS) {
+                               r = -EFAULT;
                                irq_event.status = status;
                                if (copy_to_user(argp, &irq_event,
                                                        sizeof irq_event))