linux-kernel - Re: [PATCH] drivers: pnp: proc.c: Removed unnecessary varibles

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Message-ID: <b28f6a3d-0752-a85e-bfe0-a5eb8d92c229@perex.cz>
Date:   Wed, 28 Apr 2021 14:17:07 +0200
From:   Jaroslav Kysela <perex@...ex.cz>
To:     Anupama K Patil <anupamakpatil123@...il.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        skhan@...uxfoundation.org, Adam <developer@...sty.dev>,
        bkkarthik@...u.pes.edu, gregkh@...uxfoundation.org,
        kernelnewbies@...nelnewbies.org,
        linux-kernel-mentees@...ts.linuxfoundation.org
Subject: Re: [PATCH] drivers: pnp: proc.c: Removed unnecessary varibles

Dne 22. 04. 21 v 20:03 Anupama K Patil napsal(a):
> de, e are two variables of the type 'struct proc_dir_entry'
> which can be removed to save memory. This also fixes a coding style
> issue reported by checkpatch where we are suggested to make assignment
> outside the if statement.
> 
> Signed-off-by: Anupama K Patil <anupamakpatil123@...il.com>

The change is straight without any functionality modification.

Reviewed-by: Jaroslav Kysela <perex@...ex.cz>

> ---
>  drivers/pnp/isapnp/proc.c | 13 ++++++-------
>  1 file changed, 6 insertions(+), 7 deletions(-)
> 
> diff --git a/drivers/pnp/isapnp/proc.c b/drivers/pnp/isapnp/proc.c
> index 785a796430fa..1ae458c02656 100644
> --- a/drivers/pnp/isapnp/proc.c
> +++ b/drivers/pnp/isapnp/proc.c
> @@ -57,21 +57,20 @@ static const struct proc_ops isapnp_proc_bus_proc_ops = {
>  static int isapnp_proc_attach_device(struct pnp_dev *dev)
>  {
>  	struct pnp_card *bus = dev->card;
> -	struct proc_dir_entry *de, *e;
>  	char name[16];
>  
> -	if (!(de = bus->procdir)) {
> +	if (!bus->procdir) {
>  		sprintf(name, "%02x", bus->number);
> -		de = bus->procdir = proc_mkdir(name, isapnp_proc_bus_dir);
> -		if (!de)
> +		bus->procdir = proc_mkdir(name, isapnp_proc_bus_dir);
> +		if (!bus->procdir)
>  			return -ENOMEM;
>  	}
>  	sprintf(name, "%02x", dev->number);
> -	e = dev->procent = proc_create_data(name, S_IFREG | S_IRUGO, de,
> +	dev->procent = proc_create_data(name, S_IFREG | S_IRUGO, bus->procdir,
>  					    &isapnp_proc_bus_proc_ops, dev);
> -	if (!e)
> +	if (!dev->procent)
>  		return -ENOMEM;
> -	proc_set_size(e, 256);
> +	proc_set_size(dev->procent, 256);
>  	return 0;
>  }
>  
> 


-- 
Jaroslav Kysela <perex@...ex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.