3.17-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christian Borntraeger <[email protected]>

commit f346026e55f1efd3949a67ddd1dcea7c1b9a615e upstream.

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

Signed-off-by: Christian Borntraeger <[email protected]>
Reviewed-by: Thomas Huth <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 arch/s390/kvm/interrupt.c |    1 +
 1 file changed, 1 insertion(+)

--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -85,6 +85,7 @@ static int __interrupt_is_deliverable(st
                        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;


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