Re: [PATCH] x86/irq: Fix -Wmissing-prototypes warning for init_IRQ()

From: Borislav Petkov
Date: Tue Nov 13 2018 - 05:17:06 EST


On Tue, Nov 13, 2018 at 09:56:29AM +0800, Yi Wang wrote:
> We get a warning when building kernel with W=1:
> arch/x86/kernel/irqinit.c:79:13: warning: no previous prototype for âinit_IRQâ [-Wmissing-prototypes]
> void __init init_IRQ(void)
> ^
>
> Add the missing declaration in head file to fix this.
>
> Signed-off-by: Yi Wang <wang.yi59@xxxxxxxxxx>
> ---
> arch/x86/include/asm/irq.h | 2 ++
> 1 file changed, 2 insertions(+)
>
> diff --git a/arch/x86/include/asm/irq.h b/arch/x86/include/asm/irq.h
> index 2395bb7..399a9c5 100644
> --- a/arch/x86/include/asm/irq.h
> +++ b/arch/x86/include/asm/irq.h
> @@ -41,6 +41,8 @@ static inline int irq_canonicalize(int irq)
>
> extern void init_ISA_irqs(void);
>
> +extern void __init init_IRQ(void);
> +
> #ifdef CONFIG_X86_LOCAL_APIC
> void arch_trigger_cpumask_backtrace(const struct cpumask *mask,
> bool exclude_self);
> --

I'm not sure we should do one patch per warning - that's too granulary.
What I did earlier was this:

make allmodconfig
make W=1 arch/x86/kernel/apic/

and then looked at all those -Wmissing-prototypes warnings.

Once I've fixed them, I commit the result as a

x86/apic: Fix -Wmissing-prototypes warnings

and this way it is more or less per subsystem or folder or whatever,
which still keeps the amount of patches sane for further handling.

Now, I did some fixes here so I'd suggest you do all your patches ontop
of tip/master after merging this branch into it:

https://git.kernel.org/pub/scm/linux/kernel/git/bp/bp.git/log/?h=tip-ras-core

I'll push it into tip the next days.

Thx.

--
Regards/Gruss,
Boris.

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