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KVM: x86: KVM_IRQCHIP_PIC_MASTER only has 8 pins 

Currently, one could set pin 8-15, implicitly referring to
KVM_IRQCHIP_PIC_SLAVE.

Get rid of the two local variables max_pin and delta on the way.

Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
This commit is contained in:
David Hildenbrand 2017-04-07 10:50:30 +02:00 committed by Radim Krčmář
parent 49f520b99a
commit 445ee82d7a
1 changed files with 6 additions and 9 deletions
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15
arch/x86/kvm/irq_comm.c
View File

@ -279,8 +279,6 @@ int kvm_set_routing_entry(struct kvm *kvm,
const struct kvm_irq_routing_entry *ue)
{
int r = -EINVAL;
int delta;
unsigned max_pin;
/* also allow creation of routes during KVM_IRQCHIP_INIT_IN_PROGRESS */
if (kvm->arch.irqchip_mode == KVM_IRQCHIP_NONE)
@ -292,26 +290,25 @@ int kvm_set_routing_entry(struct kvm *kvm,
case KVM_IRQ_ROUTING_IRQCHIP:
if (irqchip_split(kvm))
goto out;
delta = 0;
e->irqchip.pin = ue->u.irqchip.pin;
switch (ue->u.irqchip.irqchip) {
case KVM_IRQCHIP_PIC_SLAVE:
delta = 8;
e->irqchip.pin += PIC_NUM_PINS / 2;
/* fall through */
case KVM_IRQCHIP_PIC_MASTER:
if (ue->u.irqchip.pin >= PIC_NUM_PINS / 2)
goto out;
e->set = kvm_set_pic_irq;
max_pin = PIC_NUM_PINS;
break;
case KVM_IRQCHIP_IOAPIC:
max_pin = KVM_IOAPIC_NUM_PINS;
if (ue->u.irqchip.pin >= KVM_IOAPIC_NUM_PINS)
goto out;
e->set = kvm_set_ioapic_irq;
break;
default:
goto out;
}
e->irqchip.irqchip = ue->u.irqchip.irqchip;
e->irqchip.pin = ue->u.irqchip.pin + delta;
if (e->irqchip.pin >= max_pin)
goto out;
break;
case KVM_IRQ_ROUTING_MSI:
e->set = kvm_set_msi;