linux-kernel - Re: [PATCH v5 05/20] firmware: arm_scmi: add scmi protocol bus to enumerate protocol devices

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Message-ID: <CAK8P3a1wBBVZnd6ns5K-HhQ28WKAwVbaWsnmE+83SyOnTQt4_w@mail.gmail.com>
Date:   Mon, 19 Feb 2018 12:35:42 +0100
From:   Arnd Bergmann <arnd@...db.de>
To:     Sudeep Holla <sudeep.holla@....com>
Cc:     ALKML <linux-arm-kernel@...ts.infradead.org>,
        LKML <linux-kernel@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        Roy Franz <roy.franz@...ium.com>,
        Harb Abdulhamid <harba@...eaurora.org>,
        Nishanth Menon <nm@...com>, Loc Ho <lho@....com>,
        Alexey Klimov <klimov.linux@...il.com>,
        Ryan Harkin <Ryan.Harkin@....com>,
        Jassi Brar <jassisinghbrar@...il.com>
Subject: Re: [PATCH v5 05/20] firmware: arm_scmi: add scmi protocol bus to
 enumerate protocol devices

On Tue, Jan 2, 2018 at 3:42 PM, Sudeep Holla <sudeep.holla@....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