linux-kernel - Re: [PATCH] platform/x86: asus-wmi: fix cpufv sysfs file permission

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Date:   Mon, 24 Apr 2017 11:31:17 -0400
From:   Jérémy Lefaure <jeremy.lefaure@....epita.fr>
To:     Andy Shevchenko <andy.shevchenko@...il.com>
Cc:     Corentin Chary <corentin.chary@...il.com>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        acpi4asus-user <acpi4asus-user@...ts.sourceforge.net>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] platform/x86: asus-wmi: fix cpufv sysfs file permission

On Mon, 24 Apr 2017 12:14:14 +0300
Andy Shevchenko <andy.shevchenko@...il.com> wrote:

> On Sat, Apr 22, 2017 at 5:19 AM, Jérémy Lefaure
> <jeremy.lefaure@....epita.fr> wrote:
> > The cpufv sysfs file is defined as readable by anyone even if the
> > attribute does not have a show function. The result of every read is an
> > IO error. This file should be write only.  
> 
> Per se patch looks good to me, though would be better to add show()
> hook as well?
> 
It depends if we want to keep it write-only as it is documented in
Documentation/ABI/testing/sysfs-platform-asus-wmi.

If we want to have this file read/write, I can send a v2 of this patch.