On Tue, Jan 2, 2018 at 3:42 PM, Sudeep Holla <sudeep.ho...@arm.com> wrote:

> +#ifdef CONFIG_ARM_SCMI_PROTOCOL
> +int scmi_driver_register(struct scmi_driver *driver,
> +                        struct module *owner, const char *mod_name);
> +void scmi_driver_unregister(struct scmi_driver *driver);
> +#else
> +static int scmi_driver_register(struct scmi_driver *driver,
> +                               struct module *owner, const char *mod_name)
> +{
> +       return -EINVAL;
> +}
> +static void scmi_driver_unregister(struct scmi_driver *driver) {}
> +#endif /* CONFIG_ARM_SCMI_PROTOCOL */

The dummy helpers must be 'static inline', not just 'static', otherwise you
get a warning when this header is included by a file that doesn't call
both of them.


      Arnd

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