From: Eric Auger <eric.auger@linaro.org>
Date: Mon, 15 Dec 2014 17:43:32 +0000 (+0100)
Subject: KVM: arm/arm64: vgic: vgic_init returns -ENODEV when no online vcpu
X-Git-Tag: v3.19.7~146
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=66a97aa44c7d2f90765067e15451a29ff8b6c16b;p=thirdparty%2Fkernel%2Fstable.git

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 b43e891dc5bfc..680e4107352a6 100644
--- 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