Re: [PATCH v19 7/7] ptp: arm/arm64: Enable ptp_kvm for arm/arm64

[Zenghui Yu <yuzenghui@xxxxxxxxxx>]

On 2021/3/30 22:54, Marc Zyngier wrote:
> +int kvm_arch_ptp_init(void)
> +{
> +	int ret;
> +
> +	ret = kvm_arm_hyp_service_available(ARM_SMCCC_KVM_FUNC_PTP);
> +	if (ret <= 0)

kvm_arm_hyp_service_available() returns boolean. Maybe write as ?

	bool ret;

	ret = kvm_arm_hyp_service_available();
	if (!ret)
		return -ENODEV;

> +		return -EOPNOTSUPP;
> +
> +	return 0;
> +}