linux-kernel - Re: [PATCH 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to shared header

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Message-ID: <CAOesGMjCZMyWLe+tpNFstC88odeSCKS8bM6Oj9cpaj6j7U94rQ@mail.gmail.com>
Date:   Tue, 14 Jul 2020 20:26:50 -0700
From:   Olof Johansson <olof@...om.net>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        viresh kumar <viresh.kumar@...aro.org>,
        Linux ARM Mailing List <linux-arm-kernel@...ts.infradead.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-pm@...r.kernel.org, Michael Ellerman <mpe@...erman.id.au>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: [PATCH 05/13] cpufreq/arch: powerpc: pasemi: Move prototypes to
 shared header

On Tue, Jul 14, 2020 at 7:50 AM Lee Jones <lee.jones@...aro.org> wrote:
>
> If function callers and providers do not share the same prototypes the
> compiler complains of missing prototypes.  Fix this by moving the
> already existing prototypes out to a mutually convenient location.
>
> Fixes the following W=1 kernel build warning(s):
>
>  drivers/cpufreq/pasemi-cpufreq.c:109:5: warning: no previous prototype for ‘check_astate’ [-Wmissing-prototypes]
>  109 | int check_astate(void)
>  | ^~~~~~~~~~~~
>  drivers/cpufreq/pasemi-cpufreq.c:114:6: warning: no previous prototype for ‘restore_astate’ [-Wmissing-prototypes]
>  114 | void restore_astate(int cpu)
>  | ^~~~~~~~~~~~~~
>
> Cc: Olof Johansson <olof@...om.net>
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
> Cc: Paul Mackerras <paulus@...ba.org>
> Cc: linuxppc-dev@...ts.ozlabs.org
> Signed-off-by: Lee Jones <lee.jones@...aro.org>
> ---
>  arch/powerpc/platforms/pasemi/pasemi.h    | 15 ------------
>  arch/powerpc/platforms/pasemi/powersave.S |  2 ++
>  drivers/cpufreq/pasemi-cpufreq.c          |  1 +
>  include/linux/platform_data/pasemi.h      | 28 +++++++++++++++++++++++
>  4 files changed, 31 insertions(+), 15 deletions(-)
>  create mode 100644 include/linux/platform_data/pasemi.h
>
> diff --git a/arch/powerpc/platforms/pasemi/pasemi.h b/arch/powerpc/platforms/pasemi/pasemi.h
> index 70b56048ed1be..528d81ef748ad 100644
> --- a/arch/powerpc/platforms/pasemi/pasemi.h
> +++ b/arch/powerpc/platforms/pasemi/pasemi.h
> @@ -15,21 +15,6 @@ extern void __init pasemi_map_registers(void);
>  extern void idle_spin(void);
>  extern void idle_doze(void);
>
> -/* Restore astate to last set */
> -#ifdef CONFIG_PPC_PASEMI_CPUFREQ
> -extern int check_astate(void);
> -extern void restore_astate(int cpu);
> -#else
> -static inline int check_astate(void)
> -{
> -       /* Always return >0 so we never power save */
> -       return 1;
> -}
> -static inline void restore_astate(int cpu)
> -{
> -}
> -#endif
> -
>  extern struct pci_controller_ops pasemi_pci_controller_ops;
>
>  #endif /* _PASEMI_PASEMI_H */
> diff --git a/arch/powerpc/platforms/pasemi/powersave.S b/arch/powerpc/platforms/pasemi/powersave.S
> index d0215d5329ca7..7747b48963286 100644
> --- a/arch/powerpc/platforms/pasemi/powersave.S
> +++ b/arch/powerpc/platforms/pasemi/powersave.S
> @@ -5,6 +5,8 @@
>   * Maintained by: Olof Johansson <olof@...om.net>
>   */
>
> +#include <linux/platform_data/pasemi.h>
> +
>  #include <asm/processor.h>
>  #include <asm/page.h>
>  #include <asm/ppc_asm.h>
> diff --git a/drivers/cpufreq/pasemi-cpufreq.c b/drivers/cpufreq/pasemi-cpufreq.c
> index c66f566a854cb..c6bb3ecc90ef3 100644
> --- a/drivers/cpufreq/pasemi-cpufreq.c
> +++ b/drivers/cpufreq/pasemi-cpufreq.c
> @@ -15,6 +15,7 @@
>  #include <linux/timer.h>
>  #include <linux/module.h>
>  #include <linux/of_address.h>
> +#include <linux/platform_data/pasemi.h>
>
>  #include <asm/hw_irq.h>
>  #include <asm/io.h>
> diff --git a/include/linux/platform_data/pasemi.h b/include/linux/platform_data/pasemi.h
> new file mode 100644
> index 0000000000000..3fed0687fcc9a
> --- /dev/null
> +++ b/include/linux/platform_data/pasemi.h
> @@ -0,0 +1,28 @@
> +/* SPDX-License-Identifier: GPL-2.0-only */
> +/*
> + * Copyright (C) 2020 Linaro Ltd.
> + *
> + * Author: Lee Jones <lee.jones@...aro.org>
> + */

Absolutely not. It's neither your copyright, nor your authorship.


-Olof