KVM: s390: fix bug in interrupt parameter check

When we convert interrupt data from struct kvm_s390_interrupt to
struct kvm_s390_irq we need to check the data in the input parameter
not the output parameter.

Acked-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Jens Freimann <jfrei@linux.vnet.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>

diff --git a/arch/s390/kvm/interrupt.c b/arch/s390/kvm/interrupt.c
index 6d7513e..60d9edd 100644 (file)
--- a/arch/s390/kvm/interrupt.c
+++ b/arch/s390/kvm/interrupt.c
@@ -1354,12 +1354,12 @@ int s390int_to_s390irq(struct kvm_s390_interrupt *s390int,
                irq->u.stop.flags = s390int->parm;
                break;
        case KVM_S390_INT_EXTERNAL_CALL:
-               if (irq->u.extcall.code & 0xffff0000)
+               if (s390int->parm & 0xffff0000)
                        return -EINVAL;
                irq->u.extcall.code = s390int->parm;
                break;
        case KVM_S390_INT_EMERGENCY:
-               if (irq->u.emerg.code & 0xffff0000)
+               if (s390int->parm & 0xffff0000)
                        return -EINVAL;
                irq->u.emerg.code = s390int->parm;
                break;