KVM: arm/arm64: vgic: vgic_init returns -ENODEV when no online vcpu

commit 66b030e48af68fd4c22d343908bc057207a0a31e upstream.

To be more explicit on vgic initialization failure, -ENODEV is
returned by vgic_init when no online vcpus can be found at init.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index b43e891dc5bfc4e54844319ff6a26344a0c55ffa..680e4107352a6fe2876db4404f857f9994315ba1 100644 (file)
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -1812,7 +1812,7 @@ static int vgic_init(struct kvm *kvm)
 
        nr_cpus = dist->nr_cpus = atomic_read(&kvm->online_vcpus);
        if (!nr_cpus)           /* No vcpus? Can't be good... */
-               return -EINVAL;
+               return -ENODEV;
 
        /*
         * If nobody configured the number of interrupts, use the