linux-kernel - Re: [PATCH] w1: ds2708 and ds2781 use the new API kobj_to

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Date:   Mon, 1 Mar 2021 14:09:15 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Tian Tao <tiantao6@...ilicon.com>
Cc:     zbr@...emap.net, rikard.falkeborn@...il.com,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] w1: ds2708 and ds2781 use the new API kobj_to_dev()

On Mon, Mar 01, 2021 at 08:58:55PM +0800, Tian Tao wrote:
> fix the below warnning:
> /drivers/w1/slaves/w1_ds2780.c:93:60-61: WARNING opportunity for
> kobj_to_dev()

What creates that warning?

> 
> Signed-off-by: Tian Tao <tiantao6@...ilicon.com>
> ---
>  drivers/w1/slaves/w1_ds2780.c | 3 ++-
>  drivers/w1/slaves/w1_ds2781.c | 2 +-
>  2 files changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/w1/slaves/w1_ds2780.c b/drivers/w1/slaves/w1_ds2780.c
> index c281fe5..3cde1bb 100644
> --- a/drivers/w1/slaves/w1_ds2780.c
> +++ b/drivers/w1/slaves/w1_ds2780.c
> @@ -90,7 +90,8 @@ static ssize_t w1_slave_read(struct file *filp, struct kobject *kobj,
>  			     struct bin_attribute *bin_attr, char *buf,
>  			     loff_t off, size_t count)
>  {
> -	struct device *dev = container_of(kobj, struct device, kobj);
> +	struct device *dev = kobj_to_dev(kobj);
> +

Why the extra line here, but not in the other chunk?

Consistancy is key :)

Please fix up.

thanks,

greg k-h