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

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Date:   Mon, 26 Apr 2021 14:00:58 +0200
From:   "Rafael J. Wysocki" <rafael@...nel.org>
To:     Leon Romanovsky <leon@...nel.org>
Cc:     Shuah Khan <skhan@...uxfoundation.org>,
        Anupama K Patil <anupamakpatil123@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Adam <developer@...sty.dev>, bkkarthik@...u.pes.edu,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        kernelnewbies@...nelnewbies.org,
        linux-kernel-mentees@...ts.linuxfoundation.org
Subject: Re: [PATCH] drivers: pnp: proc.c: Removed unnecessary varibles

On Mon, Apr 26, 2021 at 6:57 AM Leon Romanovsky <leon@...nel.org> wrote:
>
> On Fri, Apr 23, 2021 at 03:08:03PM -0600, Shuah Khan wrote:
> > On 4/22/21 12:03 PM, Anupama K Patil wrote:
> > > 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.
> > >
> >
> > Sounds like a reasonable change.
>
> It is unclear how much changes to ISA code are welcomed.

Real fixes and obvious cleanups are, not much more than that.

> According to the Wikipedia, even Windows Vista disabled ISA PnP by default.
> https://en.wikipedia.org/wiki/Legacy_Plug_and_Play#Specifications

It is indeed unclear how many systems with this interface still run
Linux, but as long as the code is in the tree, there's nothing wrong
with attempting to improve it.  There's no assurance that all such
patches will be applied, though.

Thanks!