linux-kernel - Re: \\ 答复: [PATCH] of: del redundant type conversion

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Date:   Thu, 11 Apr 2019 01:51:26 +0000
From:   xiaojiangfeng <xiaojiangfeng@...wei.com>
To:     Frank Rowand <frowand.list@...il.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "robh@...nel.org" <robh@...nel.org>
CC:     "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: \\ 答复: [PATCH] of: del redundant type conversion

My pleasure.

I am very new to sparse.

I guess the warning is caused by the macro min.

Then I submitted my changes.

Thanks for code review.


-----邮件原件-----
发件人: Frank Rowand [mailto:frowand.list@...il.com] 
发送时间: 2019年4月11日 2:50
收件人: xiaojiangfeng <xiaojiangfeng@...wei.com>; robh+dt@...nel.org; robh@...nel.org
抄送: devicetree@...r.kernel.org; linux-kernel@...r.kernel.org
主题: Re: [PATCH] of: del redundant type conversion

On 4/10/19 1:29 AM, xiaojiangfeng wrote:
> The type of variable l in early_init_dt_scan_chosen is int, there is 
> no need to convert to int.
> 
> Signed-off-by: xiaojiangfeng <xiaojiangfeng@...wei.com>
> ---
>  drivers/of/fdt.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c index 
> 4734223..de893c9 100644
> --- a/drivers/of/fdt.c
> +++ b/drivers/of/fdt.c
> @@ -1091,7 +1091,7 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
>  	/* Retrieve command line */
>  	p = of_get_flat_dt_prop(node, "bootargs", &l);
>  	if (p != NULL && l > 0)
> -		strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
> +		strlcpy(data, p, min(l, COMMAND_LINE_SIZE));
>  
>  	/*
>  	 * CONFIG_CMDLINE is meant to be a default in case nothing else
> 

Thanks for catching the redundant cast.

There is a second problem detected by sparse on that line:

  drivers/of/fdt.c:1094:34: warning: expression using sizeof(void)

Can you please fix both issues?

Thanks,

Frank