KVM: s390: unintended fallthrough for external call

We must not fallthrough if the conditions for external call are not met.

Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Reviewed-by: Thomas Huth <thuth@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org

1 files changed, 1 insertions, 0 deletions

diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index d56da1db8ba0..4abf819a11a5 100644
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -86,6 +86,7 @@ static int __must_check __interrupt_is_deliverable(struct kvm_vcpu *vcpu,
                         return 0;
                 if (vcpu->arch.sie_block->gcr[0] & 0x2000ul)
                         return 1;
+                return 0;
         case KVM_S390_INT_EMERGENCY:
                 if (psw_extint_disabled(vcpu))
                         return 0;