releases/3.19.7/kvm-arm-arm64-vgic-vgic_init-returns-enodev-when-no-online-vcpu.patch

   1 From 66b030e48af68fd4c22d343908bc057207a0a31e Mon Sep 17 00:00:00 2001
   2 From: Eric Auger <eric.auger@linaro.org>
   3 Date: Mon, 15 Dec 2014 18:43:32 +0100
   4 Subject: KVM: arm/arm64: vgic: vgic_init returns -ENODEV when no online vcpu
   5
   6 From: Eric Auger <eric.auger@linaro.org>
   7
   8 commit 66b030e48af68fd4c22d343908bc057207a0a31e upstream.
   9
  10 To be more explicit on vgic initialization failure, -ENODEV is
  11 returned by vgic_init when no online vcpus can be found at init.
  12
  13 Signed-off-by: Eric Auger <eric.auger@linaro.org>
  14 Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
  15 Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
  16 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
  17
  18 ---
  19  virt/kvm/arm/vgic.c |    2 +-
  20  1 file changed, 1 insertion(+), 1 deletion(-)
  21
  22 --- a/virt/kvm/arm/vgic.c
  23 +++ b/virt/kvm/arm/vgic.c
  24 @@ -1812,7 +1812,7 @@ static int vgic_init(struct kvm *kvm)
  25
  26         nr_cpus = dist->nr_cpus = atomic_read(&kvm->online_vcpus);
  27         if (!nr_cpus)           /* No vcpus? Can't be good... */
  28 -               return -EINVAL;
  29 +               return -ENODEV;
  30
  31         /*
  32          * If nobody configured the number of interrupts, use the