linux-kernel - Re: [PATCH] powerpc: Make some functions static

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Date:   Wed, 13 Mar 2019 21:12:59 +0100
From:   Mathieu Malaterre <malat@...ian.org>
To:     Christophe Leroy <christophe.leroy@....fr>
Cc:     Michael Ellerman <mpe@...erman.id.au>,
        Paul Mackerras <paulus@...ba.org>,
        linuxppc-dev <linuxppc-dev@...ts.ozlabs.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] powerpc: Make some functions static

On Tue, Mar 12, 2019 at 10:14 PM Christophe Leroy
<christophe.leroy@....fr> wrote:
>
>
>
> Le 12/03/2019 à 21:31, Mathieu Malaterre a écrit :
> > In commit cb9e4d10c448 ("[POWERPC] Add support for 750CL Holly board")
> > new functions were added. Since these functions can be made static,
> > make it so. While doing so, it turns out that holly_power_off and
> > holly_halt are unused, so remove them.
>
> I would have said 'since these functions are only used in this C file,
> make them static'.
>
> I think this could be split in two patches:
> 1/ Remove unused functions, ie holly_halt() and holly_power_off().
> 2/ Make the other ones static.

Michael do you want two patches ?

> Christophe
>
> >
> > Silence the following warnings triggered using W=1:
> >
> >    arch/powerpc/platforms/embedded6xx/holly.c:47:5: error: no previous prototype for 'holly_exclude_device' [-Werror=missing-prototypes]
> >    arch/powerpc/platforms/embedded6xx/holly.c:190:6: error: no previous prototype for 'holly_show_cpuinfo' [-Werror=missing-prototypes]
> >    arch/powerpc/platforms/embedded6xx/holly.c:196:17: error: no previous prototype for 'holly_restart' [-Werror=missing-prototypes]
> >    arch/powerpc/platforms/embedded6xx/holly.c:236:6: error: no previous prototype for 'holly_power_off' [-Werror=missing-prototypes]
> >    arch/powerpc/platforms/embedded6xx/holly.c:243:6: error: no previous prototype for 'holly_halt' [-Werror=missing-prototypes]
> >
> > Signed-off-by: Mathieu Malaterre <malat@...ian.org>
> > ---
> >   arch/powerpc/platforms/embedded6xx/holly.c | 19 ++++---------------
> >   1 file changed, 4 insertions(+), 15 deletions(-)
> >
> > diff --git a/arch/powerpc/platforms/embedded6xx/holly.c b/arch/powerpc/platforms/embedded6xx/holly.c
> > index 0409714e8070..829bf3697dc9 100644
> > --- a/arch/powerpc/platforms/embedded6xx/holly.c
> > +++ b/arch/powerpc/platforms/embedded6xx/holly.c
> > @@ -44,7 +44,8 @@
> >
> >   #define HOLLY_PCI_CFG_PHYS 0x7c000000
> >
> > -int holly_exclude_device(struct pci_controller *hose, u_char bus, u_char devfn)
> > +static int holly_exclude_device(struct pci_controller *hose, u_char bus,
> > +                             u_char devfn)
> >   {
> >       if (bus == 0 && PCI_SLOT(devfn) == 0)
> >               return PCIBIOS_DEVICE_NOT_FOUND;
> > @@ -187,13 +188,13 @@ static void __init holly_init_IRQ(void)
> >       tsi108_write_reg(TSI108_MPIC_OFFSET + 0x30c, 0);
> >   }
> >
> > -void holly_show_cpuinfo(struct seq_file *m)
> > +static void holly_show_cpuinfo(struct seq_file *m)
> >   {
> >       seq_printf(m, "vendor\t\t: IBM\n");
> >       seq_printf(m, "machine\t\t: PPC750 GX/CL\n");
> >   }
> >
> > -void __noreturn holly_restart(char *cmd)
> > +static void __noreturn holly_restart(char *cmd)
> >   {
> >       __be32 __iomem *ocn_bar1 = NULL;
> >       unsigned long bar;
> > @@ -233,18 +234,6 @@ void __noreturn holly_restart(char *cmd)
> >       for (;;) ;
> >   }
> >
> > -void holly_power_off(void)
> > -{
> > -     local_irq_disable();
> > -     /* No way to shut power off with software */
> > -     for (;;) ;
> > -}
> > -
> > -void holly_halt(void)
> > -{
> > -     holly_power_off();
> > -}
> > -
> >   /*
> >    * Called very early, device-tree isn't unflattened
> >    */
> >