KVM: x86: cleanup kvm_apic_match_*()

The majority of this patch turns
  result = 0; if (CODE) result = 1; return result;
into
  return CODE;
because we return bool now.

Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 62f6246..caf5a8d 100644 (file)
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -591,42 +591,34 @@ static bool kvm_apic_match_physical_addr(struct kvm_lapic *apic, u32 dest)
 
 static bool kvm_apic_match_logical_addr(struct kvm_lapic *apic, u32 mda)
 {
-       int result = 0;
        u32 logical_id;
 
        if (kvm_apic_broadcast(apic, mda))
-               return 1;
+               return true;
 
-       if (apic_x2apic_mode(apic)) {
-               logical_id = kvm_apic_get_reg(apic, APIC_LDR);
-               return logical_id & mda;
-       }
+       logical_id = kvm_apic_get_reg(apic, APIC_LDR);
 
-       logical_id = GET_APIC_LOGICAL_ID(kvm_apic_get_reg(apic, APIC_LDR));
+       if (apic_x2apic_mode(apic))
+               return (logical_id & mda) != 0;
+
+       logical_id = GET_APIC_LOGICAL_ID(logical_id);
 
        switch (kvm_apic_get_reg(apic, APIC_DFR)) {
        case APIC_DFR_FLAT:
-               if (logical_id & mda)
-                       result = 1;
-               break;
+               return (logical_id & mda) != 0;
        case APIC_DFR_CLUSTER:
-               if (((logical_id >> 4) == (mda >> 0x4))
-                   && (logical_id & mda & 0xf))
-                       result = 1;
-               break;
+               return ((logical_id >> 4) == (mda >> 4))
+                      && (logical_id & mda & 0xf) != 0;
        default:
                apic_debug("Bad DFR vcpu %d: %08x\n",
                           apic->vcpu->vcpu_id, kvm_apic_get_reg(apic, APIC_DFR));
-               break;
+               return false;
        }
-
-       return result;
 }
 
 bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
                           int short_hand, unsigned int dest, int dest_mode)
 {
-       int result = 0;
        struct kvm_lapic *target = vcpu->arch.apic;
 
        apic_debug("target %p, source %p, dest 0x%x, "
@@ -638,27 +630,21 @@ bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
        case APIC_DEST_NOSHORT:
                if (dest_mode == 0)
                        /* Physical mode. */
-                       result = kvm_apic_match_physical_addr(target, dest);
+                       return kvm_apic_match_physical_addr(target, dest);
                else
                        /* Logical mode. */
-                       result = kvm_apic_match_logical_addr(target, dest);
-               break;
+                       return kvm_apic_match_logical_addr(target, dest);
        case APIC_DEST_SELF:
-               result = (target == source);
-               break;
+               return target == source;
        case APIC_DEST_ALLINC:
-               result = 1;
-               break;
+               return true;
        case APIC_DEST_ALLBUT:
-               result = (target != source);
-               break;
+               return target != source;
        default:
                apic_debug("kvm: apic: Bad dest shorthand value %x\n",
                           short_hand);
-               break;
+               return false;
        }
-
-       return result;
 }
 
 bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src,