linux-kernel - Re: [PATCH] sh: remove unused variable

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Date:   Mon, 10 May 2021 22:11:46 +0200
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Eric Dumazet <eric.dumazet@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        Frederic Weisbecker <frederic@...nel.org>,
        Yoshinori Sato <ysato@...rs.sourceforge.jp>,
        Rich Felker <dalias@...c.org>
Subject: Re: [PATCH] sh: remove unused variable



On 4/14/21 7:05 PM, Eric Dumazet wrote:
> From: Eric Dumazet <edumazet@...gle.com>
> 
> Removes this annoying warning:
> 
> arch/sh/kernel/traps.c: In function ‘nmi_trap_handler’:
> arch/sh/kernel/traps.c:183:15: warning: unused variable ‘cpu’ [-Wunused-variable]
>   183 |  unsigned int cpu = smp_processor_id();
> 
> Fixes: fe3f1d5d7cd3 ("sh: Get rid of nmi_count()")
> Signed-off-by: Eric Dumazet <edumazet@...gle.com>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Frederic Weisbecker <frederic@...nel.org>
> Cc: Yoshinori Sato <ysato@...rs.sourceforge.jp>
> Cc: Rich Felker <dalias@...c.org>
> ---
>  arch/sh/kernel/traps.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/arch/sh/kernel/traps.c b/arch/sh/kernel/traps.c
> index f5beecdac69382f2d719fa33d50b9d58e22f6ff8..e76b221570999776e3bc9276d6b2fd60b9132e94 100644
> --- a/arch/sh/kernel/traps.c
> +++ b/arch/sh/kernel/traps.c
> @@ -180,7 +180,6 @@ static inline void arch_ftrace_nmi_exit(void) { }
>  
>  BUILD_TRAP_HANDLER(nmi)
>  {
> -	unsigned int cpu = smp_processor_id();
>  	TRAP_HANDLER_DECL;
>  
>  	arch_ftrace_nmi_enter();
> 

Is there anything wrong with this patch ?

Thanks !