linux-kernel - Re: [PATCH 1/1] mmc: core: export emmc revision via sysfs

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Date:   Wed, 22 Mar 2017 07:17:24 +0900
From:   Jaehoon Chung <jh80.chung@...sung.com>
To:     Jin Qian <jinqian@...roid.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        Shawn Lin <shawn.lin@...k-chips.com>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Linus Walleij <linus.walleij@...aro.org>,
        Uri Yanai <uri.yanai@...disk.com>,
        Dong Aisheng <aisheng.dong@....com>,
        Chaotian Jing <chaotian.jing@...iatek.com>,
        Pratibhasagar V <pratibha@...eaurora.org>,
        Gwendal Grignou <gwendal@...omium.org>,
        linux-mmc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/1] mmc: core: export emmc revision via sysfs

Hi,

On 03/22/2017 07:01 AM, Jin Qian wrote:
> Extend sysfs to access ext_csd revision information.
> 
> Signed-off-by: Jin Qian <jinqian@...gle.com>
> Signed-off-by: Jin Qian <jinqian@...roid.com>

I think you can choose one of them for signed-off tag.

> ---
>  drivers/mmc/core/mmc.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c
> index 7fd722868875..08c62c9bec48 100644
> --- a/drivers/mmc/core/mmc.c
> +++ b/drivers/mmc/core/mmc.c
> @@ -779,6 +779,7 @@ MMC_DEV_ATTR(manfid, "0x%06x\n", card->cid.manfid);
>  MMC_DEV_ATTR(name, "%s\n", card->cid.prod_name);
>  MMC_DEV_ATTR(oemid, "0x%04x\n", card->cid.oemid);
>  MMC_DEV_ATTR(prv, "0x%x\n", card->cid.prv);
> +MMC_DEV_ATTR(rev, "0x%x\n", card->ext_csd.rev);

I'm not sure but if someone want to know ext_csd revision information, attribute name might be more clearly.
e,g) ext_csd_rev?

It's my preference. :)

Best Regards,
Jaehoon Chung

>  MMC_DEV_ATTR(pre_eol_info, "%02x\n", card->ext_csd.pre_eol_info);
>  MMC_DEV_ATTR(life_time, "0x%02x 0x%02x\n",
>  	card->ext_csd.device_life_time_est_typ_a,
> @@ -836,6 +837,7 @@ static struct attribute *mmc_std_attrs[] = {
>  	&dev_attr_name.attr,
>  	&dev_attr_oemid.attr,
>  	&dev_attr_prv.attr,
> +	&dev_attr_rev.attr,
>  	&dev_attr_pre_eol_info.attr,
>  	&dev_attr_life_time.attr,
>  	&dev_attr_serial.attr,
>