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

Olof Johansson
2020-07-15T06:46:58Z

On Tue, Jul 14, 2020 at 11:33 PM Lee Jones <lee.jones@linaro.org> wrote:
>
> On Tue, 14 Jul 2020, Olof Johansson wrote:
>
> > On Tue, Jul 14, 2020 at 7:50 AM Lee Jones <lee.jones@linaro.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@lixom.net>
> > > Cc: Michael Ellerman <mpe@ellerman.id.au>
> > > Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
> > > Cc: Paul Mackerras <paulus@samba.org>
> > > Cc: linuxppc-dev@lists.ozlabs.org
> > > Signed-off-by: Lee Jones <lee.jones@linaro.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@lixom.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@linaro.org>
> > > + */
> >
> > Absolutely not. It's neither your copyright, nor your authorship.
>
> The file was new. Anyway, the point is now moot.

The contents was copied and pasted from other material, not originally
produced by you.

I suggest you consult with Linaro lawyers on how to handle this if you
have to do something like it in the future.

-Olof