linux-kernel - Re: [PATCH v2 16/25] arch: arm: mach-at91: pm: Move prototypes to mutually included header

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Message-ID: <20201112104810.GH1997862@dell>
Date:   Thu, 12 Nov 2020 10:48:10 +0000
From:   Lee Jones <lee.jones@...aro.org>
To:     Alexandre Belloni <alexandre.belloni@...tlin.com>
Cc:     linus.walleij@...aro.org, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org, Russell King <linux@...linux.org.uk>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Ludovic Desroches <ludovic.desroches@...rochip.com>
Subject: Re: [PATCH v2 16/25] arch: arm: mach-at91: pm: Move prototypes to
 mutually included header

On Thu, 12 Nov 2020, Alexandre Belloni wrote:

> Hi,
> 
> On 12/11/2020 09:39:18+0000, Lee Jones wrote:
> > Both the caller and the supplier's source file should have access to
> > the include file containing the prototypes.
> > 
> > Fixes the following W=1 kernel build warning(s):
> > 
> >  drivers/pinctrl/pinctrl-at91.c:1637:6: warning: no previous prototype for ‘at91_pinctrl_gpio_suspend’ [-Wmissing-prototypes]
> >  1637 | void at91_pinctrl_gpio_suspend(void)
> >  | ^~~~~~~~~~~~~~~~~~~~~~~~~
> >  drivers/pinctrl/pinctrl-at91.c:1661:6: warning: no previous prototype for ‘at91_pinctrl_gpio_resume’ [-Wmissing-prototypes]
> >  1661 | void at91_pinctrl_gpio_resume(void)
> >  | ^~~~~~~~~~~~~~~~~~~~~~~~
> > 
> > Cc: Russell King <linux@...linux.org.uk>
> > Cc: Nicolas Ferre <nicolas.ferre@...rochip.com>
> > Cc: Alexandre Belloni <alexandre.belloni@...tlin.com>
> > Cc: Ludovic Desroches <ludovic.desroches@...rochip.com>
> > Signed-off-by: Lee Jones <lee.jones@...aro.org>
> > ---

[...]

> > diff --git a/include/soc/at91/pm.h b/include/soc/at91/pm.h
> > new file mode 100644
> > index 0000000000000..0fd5093f7f73a
> > --- /dev/null
> > +++ b/include/soc/at91/pm.h
> > @@ -0,0 +1,9 @@
> > +/* SPDX-License-Identifier: GPL-2.0-only */
> > +/*
> > + * atmel platform data
> > + */
> > +
> > +#ifdef CONFIG_PINCTRL_AT91
> 
> Shouldn't that be a header guard instead of depending on PINCTRL_AT91 ?

I copied the same semantics from the header it was taken from.

Happy to turn it into a proper header file too.

-- 
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
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