KVM: selftests: Drop 'int' return from asserting *_has_device_attr()

Drop 'int' returns from *_device_has_attr() helpers that assert the
return is '0', there's no point in returning '0' and "requiring" the
caller to perform a redundant assertion.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tools/testing/selftests/kvm/aarch64/vgic_init.c

@@ -201,8 +201,8 @@ static void subtest_v3_redist_regions(struct vm_gic *v)
 	uint64_t addr, expected_addr;
 	int ret;
 
-	ret = kvm_has_device_attr(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
-				     KVM_VGIC_V3_ADDR_TYPE_REDIST);
+	ret = __kvm_has_device_attr(v->gic_fd, KVM_DEV_ARM_VGIC_GRP_ADDR,
+				    KVM_VGIC_V3_ADDR_TYPE_REDIST);
 	TEST_ASSERT(!ret, "Multiple redist regions advertised");
 
 	addr = REDIST_REGION_ATTR_ADDR(NR_VCPUS, 0x100000, 2, 0);

tools/testing/selftests/kvm/include/kvm_util_base.h

@@ -483,7 +483,14 @@ void *vcpu_map_dirty_ring(struct kvm_vm *vm, uint32_t vcpuid);
 void vcpu_args_set(struct kvm_vm *vm, uint32_t vcpuid, unsigned int num, ...);
 
 int __kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr);
-int kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr);
+
+static inline void kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr)
+{
+	int ret = __kvm_has_device_attr(dev_fd, group, attr);
+
+	TEST_ASSERT(!ret, "KVM_HAS_DEVICE_ATTR failed, rc: %i errno: %i", ret, errno);
+}
+
 int __kvm_test_create_device(struct kvm_vm *vm, uint64_t type);
 int __kvm_create_device(struct kvm_vm *vm, uint64_t type);
 int kvm_create_device(struct kvm_vm *vm, uint64_t type);
@@ -496,8 +503,15 @@ int _kvm_irq_line(struct kvm_vm *vm, uint32_t irq, int level);
 
 int __vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
 			  uint64_t attr);
-int vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
-			 uint64_t attr);
+
+static inline void vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid,
+					uint32_t group, uint64_t attr)
+{
+	int ret = __vcpu_has_device_attr(vm, vcpuid, group, attr);
+
+	TEST_ASSERT(!ret, KVM_IOCTL_ERROR(KVM_HAS_DEVICE_ATTR, ret));
+}
+
 int _vcpu_access_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
 			  uint64_t attr, void *val, bool write);
 int vcpu_access_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,

tools/testing/selftests/kvm/lib/kvm_util.c

@@ -1621,14 +1621,6 @@ int __kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr)
 	return ioctl(dev_fd, KVM_HAS_DEVICE_ATTR, &attribute);
 }
 
-int kvm_has_device_attr(int dev_fd, uint32_t group, uint64_t attr)
-{
-	int ret = __kvm_has_device_attr(dev_fd, group, attr);
-
-	TEST_ASSERT(!ret, "KVM_HAS_DEVICE_ATTR failed, rc: %i errno: %i", ret, errno);
-	return ret;
-}
-
 int __kvm_test_create_device(struct kvm_vm *vm, uint64_t type)
 {
 	struct kvm_create_device create_dev = {
@@ -1694,15 +1686,6 @@ int __vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
 	return __kvm_has_device_attr(vcpu->fd, group, attr);
 }
 
-int vcpu_has_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
-				 uint64_t attr)
-{
-	int ret = __vcpu_has_device_attr(vm, vcpuid, group, attr);
-
-	TEST_ASSERT(!ret, "KVM_HAS_DEVICE_ATTR IOCTL failed, rc: %i errno: %i", ret, errno);
-	return ret;
-}
-
 int _vcpu_access_device_attr(struct kvm_vm *vm, uint32_t vcpuid, uint32_t group,
 			     uint64_t attr, void *val, bool write)
 {