linux-kernel - Re: keyboard backlight max_brightness bug on Dell Latitude E6410

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Date:   Sat, 14 Oct 2017 16:50:27 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Pali Rohár <pali.rohar@...il.com>
Cc:     Gabriele Mazzotta <gabriele.mzt@...il.com>,
        Mario Limonciello <Mario_Limonciello@...l.com>,
        "Gabriel M. Elder" <gabriel@...gnowsys.com>,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        "platform-driver-x86@...r.kernel.org" 
        <platform-driver-x86@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: keyboard backlight max_brightness bug on Dell Latitude E6410

On Thu, Sep 14, 2017 at 6:25 PM, Pali Rohár <pali.rohar@...il.com> wrote:
> On Thursday 14 September 2017 16:33:57 Gabriele Mazzotta wrote:
>> 2017-09-14 15:54 GMT+02:00 Pali Rohár <pali.rohar@...il.com>:
>> > Adding Gabriele to thread, IIRC you have machine which uses
>> > "supported keyboard light brightness levels"
>> > Can you look at this bug, if your machine is affected by it too?
>>
>> My keyboard has two brightness levels + off. The value of
>> max_brightness is 2, as expected.
>
> Ah :-(
>
> So you have "Supported Keyboard light brightness levels :  2" and you
> can se value 0, 1 or 2.
>
> And Gabriel has "Supported Keyboard light brightness levels :  10" and
> can set only values 0..9. But not 10.
>
> Any idea how to solve this situation?
>
> CCing Mario from Dell. Can you recheck what is wrong here? Or why
> Dell Latitude E6410 behaves differently?

To be clear, am I waiting for new version?

In any case I mark it as Changes Requested in my patchwork queue.

Feel free to send a new version.

-- 
With Best Regards,
Andy Shevchenko