linux-kernel - Re: [PATCH] platform/x86: dell-smo8800: Use min

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Date:   Sat, 28 Jan 2023 15:02:29 +0100
From:   Pali Rohár <pali@...nel.org>
To:     Deepak R Varma <drv@...lo.com>
Cc:     Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org,
        Saurabh Singh Sengar <ssengar@...rosoft.com>,
        Praveen Kumar <kumarpraveen@...ux.microsoft.com>
Subject: Re: [PATCH] platform/x86: dell-smo8800: Use min_t() for comparison
 and assignment

On Friday 27 January 2023 22:01:49 Deepak R Varma wrote:
> Simplify code by using min_t helper macro for logical evaluation
> and value assignment. Use the _t variant of min macro since the
> variable types are not same.
> This issue is identified by coccicheck using the minmax.cocci file.
> 
> Signed-off-by: Deepak R Varma <drv@...lo.com>

Looks good,

Acked-by: Pali Rohár <pali@...nel.org>

> ---
>  drivers/platform/x86/dell/dell-smo8800.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/drivers/platform/x86/dell/dell-smo8800.c b/drivers/platform/x86/dell/dell-smo8800.c
> index 3385e852104c..8d6b7a83cf24 100644
> --- a/drivers/platform/x86/dell/dell-smo8800.c
> +++ b/drivers/platform/x86/dell/dell-smo8800.c
> @@ -67,10 +67,7 @@ static ssize_t smo8800_misc_read(struct file *file, char __user *buf,
>  
>  	retval = 1;
>  
> -	if (data < 255)
> -		byte_data = data;
> -	else
> -		byte_data = 255;
> +	byte_data = min_t(u32, data, 255);
>  
>  	if (put_user(byte_data, buf))
>  		retval = -EFAULT;
> -- 
> 2.34.1
> 
> 
>