linux-kernel - Re: [PATCH] input: serio: constify attribute

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Date:   Mon, 10 Jul 2017 20:25:30 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Arvind Yadav <arvind.yadav.cs@...il.com>
Cc:     benjamin.tissoires@...hat.com, linux-input@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] input: serio: constify attribute_group structures.

On Wed, Jul 05, 2017 at 03:12:53PM +0530, Arvind Yadav wrote:
> attribute_groups are not supposed to change at runtime. All functions
> working with attribute_groups provided by <linux/sysfs.h> work with const
> attribute_group. So mark the non-const structs as const.
> 
> File size before:
>    text	   data	    bss	    dec	    hex	filename
>    6862	   1008	      4	   7874	   1ec2	drivers/input/serio/serio.o
> 
> File size After adding 'const':
>    text	   data	    bss	    dec	    hex	filename
>    6990	    880	      4	   7874	   1ec2	drivers/input/serio/serio.o
> 
> Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>

Thanks, I'll queue this and the rest for 4.14.

> ---
>  drivers/input/serio/serio.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/input/serio/serio.c b/drivers/input/serio/serio.c
> index 30d6230..24a90c8 100644
> --- a/drivers/input/serio/serio.c
> +++ b/drivers/input/serio/serio.c
> @@ -469,7 +469,7 @@ static ssize_t firmware_id_show(struct device *dev, struct device_attribute *att
>  	NULL
>  };
>  
> -static struct attribute_group serio_id_attr_group = {
> +static const struct attribute_group serio_id_attr_group = {
>  	.name	= "id",
>  	.attrs	= serio_device_id_attrs,
>  };
> @@ -489,7 +489,7 @@ static ssize_t firmware_id_show(struct device *dev, struct device_attribute *att
>  	NULL
>  };
>  
> -static struct attribute_group serio_device_attr_group = {
> +static const struct attribute_group serio_device_attr_group = {
>  	.attrs	= serio_device_attrs,
>  };
>  
> -- 
> 1.9.1
> 

-- 
Dmitry