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Date: Thu, 4 Apr 2024 09:41:37 +0200
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Subject: Re: [PATCH v2] tty: xtensa/iss: Use min() to fix Coccinelle warning
To: Thorsten Blum <thorsten.blum@toblux.com>
Cc: chris@zankel.net, gregkh@linuxfoundation.org, jcmvbkbc@gmail.com,
 linux-kernel@vger.kernel.org
References: <fba2102e-aefc-4be4-905a-57061c1f8cce@kernel.org>
 <20240404073801.5716-2-thorsten.blum@toblux.com>
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From: Jiri Slaby <jirislaby@kernel.org>
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In-Reply-To: <20240404073801.5716-2-thorsten.blum@toblux.com>
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On 04. 04. 24, 9:38, Thorsten Blum wrote:
> Use unsigned size_t to improve len data type and min() to fix the
> following Coccinelle/coccicheck warning reported by minmax.cocci:
> 
> 	WARNING opportunity for min()
> 
> Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
> ---
> Changes in v2:
> - Use min() instead of umin() as suggested by Jiri Slaby
> ---
>   arch/xtensa/platforms/iss/console.c | 5 +++--
>   1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/xtensa/platforms/iss/console.c b/arch/xtensa/platforms/iss/console.c
> index 8896e691c051..d2380767f3a4 100644
> --- a/arch/xtensa/platforms/iss/console.c
> +++ b/arch/xtensa/platforms/iss/console.c
> @@ -167,8 +167,9 @@ late_initcall(rs_init);
>   static void iss_console_write(struct console *co, const char *s, unsigned count)
>   {
>   	if (s && *s != 0) {
> -		int len = strlen(s);
> -		simc_write(1, s, count < len ? count : len);
> +		size_t len = strlen(s);
> +
> +		simc_write(1, s, min(count, len));

So do you need 'len' after all :)?

if (s && *s != 0)
   simc_write(1, s, min(count, strlen(s)));

sounds good.

>   	}
>   }
>   

-- 
js
suse labs