linux-kernel - Re: [PATCH] dax: fix default return code of range

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Message-ID: <49788459-f42d-5173-c77a-f0a33558a58e@cn.fujitsu.com>
Date:   Mon, 8 Feb 2021 13:49:38 +0800
From:   Ruan Shiyang <ruansy.fnst@...fujitsu.com>
To:     <linux-nvdimm@...ts.01.org>, <dan.j.williams@...el.com>,
        <vishal.l.verma@...el.com>, <dave.jiang@...el.com>
CC:     <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dax: fix default return code of range_parse()

ping

On 2021/1/26 上午10:13, Shiyang Ruan wrote:
> The return value of range_parse() indicates the size when it is
> positive.  The error code should be negative.
> 
> Signed-off-by: Shiyang Ruan <ruansy.fnst@...fujitsu.com>
> ---
>   drivers/dax/bus.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/dax/bus.c b/drivers/dax/bus.c
> index 737b207c9e30..3003558c1a8b 100644
> --- a/drivers/dax/bus.c
> +++ b/drivers/dax/bus.c
> @@ -1038,7 +1038,7 @@ static ssize_t range_parse(const char *opt, size_t len, struct range *range)
>   {
>   	unsigned long long addr = 0;
>   	char *start, *end, *str;
> -	ssize_t rc = EINVAL;
> +	ssize_t rc = -EINVAL;
>   
>   	str = kstrdup(opt, GFP_KERNEL);
>   	if (!str)
>