From: Eric Auger <eric.auger@linaro.org>
Date: Mon, 4 May 2015 01:25:18 +0000 (+0800)
Subject: KVM: arm/arm64: vgic: vgic_init returns -ENODEV when no online vcpu
X-Git-Tag: v3.18.14~208
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3fca593bd1a16d81b12b4081ee0234c9b92cc06a;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: Sasha Levin <sasha.levin@oracle.com>
---

diff --git a/virt/kvm/arm/vgic.c b/virt/kvm/arm/vgic.c
index 9a8c18301b7a4..fc82307fbd8ca 100644
--- a/virt/kvm/arm/vgic.c
+++ b/virt/kvm/arm/vgic.c
@@ -1807,7 +1807,7 @@ 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