linux-kernel - Re: [PATCH] memstick/mspro_block: use sysfs

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Message-ID: <CAPDyKFpEqKUaqoJhD4xQYXaG-fmsG_XgqD3AJV=DjftiGbW1bA@mail.gmail.com>
Date:   Wed, 7 Dec 2022 11:35:55 +0100
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     ye.xingchen@....com.cn
Cc:     maximlevitsky@...il.com, oakad@...oo.com, axboe@...nel.dk,
        hare@...e.de, linux-mmc@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] memstick/mspro_block: use sysfs_emit() to instead of scnprintf()

On Thu, 1 Dec 2022 at 12:50, <ye.xingchen@....com.cn> wrote:
>
> From: ye xingchen <ye.xingchen@....com.cn>
>
> Follow the advice of the Documentation/filesystems/sysfs.rst and show()
> should only use sysfs_emit() or sysfs_emit_at() when formatting the
> value to be returned to user space.

There are plenty of other conversions that can be done using
sysfs_emit_at() in drivers/memstick/core/mspro_block.c. Would you mind
doing that too, as part of the $subject patch?

Kind regards
Uffe

>
> Signed-off-by: ye xingchen <ye.xingchen@....com.cn>
> ---
>  drivers/memstick/core/mspro_block.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
> index 61cf75d4a01e..ae3a5dc00344 100644
> --- a/drivers/memstick/core/mspro_block.c
> +++ b/drivers/memstick/core/mspro_block.c
> @@ -356,7 +356,7 @@ static ssize_t mspro_block_attr_show_modelname(struct device *dev,
>                                                      struct mspro_sys_attr,
>                                                      dev_attr);
>
> -       return scnprintf(buffer, PAGE_SIZE, "%s", (char *)s_attr->data);
> +       return sysfs_emit(buffer, "%s\n", (char *)s_attr->data);
>  }
>
>  static ssize_t mspro_block_attr_show_mbr(struct device *dev,
> --
> 2.25.1