linux-kernel - Re: [PATCH] csky: Remove compile warning for CONFIG

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Message-ID: <1bf734c8-ca29-4ed6-a10a-9595b2c844b8@infradead.org>
Date: Sun, 19 Oct 2025 14:59:41 -0700
From: Randy Dunlap <rdunlap@...radead.org>
To: guoren@...nel.org
Cc: linux-csky@...r.kernel.org, linux-kernel@...r.kernel.org, arnd@...db.de,
 linux-arch@...r.kernel.org
Subject: Re: [PATCH] csky: Remove compile warning for CONFIG_SMP



On 10/19/25 4:02 AM, guoren@...nel.org wrote:
> From: "Guo Ren (Alibaba DAMO Academy)" <guoren@...nel.org>
> 
> When CONFIG_SMP is enabled, there is a compile warning:
> 
> arch/csky/kernel/smp.c:242:6: warning: no previous prototype for
> 'csky_start_secondary' [-Wmissing-prototypes]
>   242 | void csky_start_secondary(void)
>       |      ^~~~~~~~~~~~~~~~~~~~
> 
> Add a similar prototype with csky_start in sections.h.
> 
> Signed-off-by: Guo Ren (Alibaba DAMO Academy) <guoren@...nel.org>

Reviewed-by: Randy Dunlap <rdunlap@...radead.org>
Tested-by: Randy Dunlap <rdunlap@...radead.org>

Thanks.

> ---
>  arch/csky/include/asm/sections.h | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/csky/include/asm/sections.h b/arch/csky/include/asm/sections.h
> index 83e82b7c0f6c..ee5cdf226a9b 100644
> --- a/arch/csky/include/asm/sections.h
> +++ b/arch/csky/include/asm/sections.h
> @@ -8,5 +8,6 @@
>  extern char _start[];
>  
>  asmlinkage void csky_start(unsigned int unused, void *dtb_start);
> +asmlinkage void csky_start_secondary(void);
>  
>  #endif /* __ASM_SECTIONS_H */

-- 
~Randy