linux-kernel - Re: [PATCH linux-next] lib: Dhrystone: initialize ret value

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Message-ID: <Y6aVA9M/wxsi/KKh@dev-arch.thelio-3990X>
Date:   Fri, 23 Dec 2022 22:58:27 -0700
From:   Nathan Chancellor <nathan@...nel.org>
To:     Zhouyi Zhou <zhouzhouyi@...il.com>
Cc:     ndesaulniers@...gle.com, trix@...hat.com,
        akpm@...ux-foundation.org, geert+renesas@...der.be,
        linux-kernel@...r.kernel.org, llvm@...ts.linux.dev
Subject: Re: [PATCH linux-next] lib: Dhrystone: initialize ret value

On Sat, Dec 24, 2022 at 01:06:40PM +0800, Zhouyi Zhou wrote:
> Initialize ret value whenever 'if' condition is false in dhry_run_set.
> 
> Signed-off-by: Zhouyi Zhou <zhouzhouyi@...il.com>
> ---
> Dear Developers:
> When I invoke make bzImage LLVM=1, clang complains followings:
> lib/dhry_run.c:61:6: error: variable 'ret' is used uninitialized whenever 'if' condition is false
> 
> Fix above complain by initialize the ret value.
> 
> Thanks
> Zhouyi

Thank you for the patch! I think this has already been fixed:

https://lore.kernel.org/20221219221045.0ABAEC433D2@smtp.kernel.org/

-next is on a break so it won't be there for a bit:

https://lore.kernel.org/20221220112148.64f183ce@canb.auug.org.au/

Cheers,
Nathan

> --
>  lib/dhry_run.c | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/lib/dhry_run.c b/lib/dhry_run.c
> index 31a1d442e4a0..be86e5126c29 100644
> --- a/lib/dhry_run.c
> +++ b/lib/dhry_run.c
> @@ -64,6 +64,7 @@ static int dhry_run_set(const char *val, const struct kernel_param *kp)
>  			return ret;
>  	} else {
>  		dhry_run = true;
> +		ret = 0;
>  	}
>  
>  	if (dhry_run && system_state == SYSTEM_RUNNING)
> -- 
> 2.34.1
>