linux-kernel - Re: [PATCH v2 0/4] Topstar ACPI LED Workaround

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Date:   Fri, 3 Nov 2017 13:56:46 +0200
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Guillaume Douézan-Grard 
        <gdouezangrard@...il.com>
Cc:     Andy Shevchenko <andy@...radead.org>,
        Darren Hart <dvhart@...radead.org>,
        Platform Driver <platform-driver-x86@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 0/4] Topstar ACPI LED Workaround

On Sun, Oct 29, 2017 at 1:49 AM, Guillaume Douézan-Grard
<gdouezangrard@...il.com> wrote:
> Hi Andy,
>
> Thank you for your review. Changes since the previous submission are
> highlighted below.

Thanks for an update.

Unfortunately patch series needs more work (and we have time, since
it's -rc7 already, to improve).

I'm going to comment per patch slightly later.

>
> On Topstar U931 Notebooks, an issue prevents the WLAN toggle key from
> being properly managed by the Embedded Controller and successfully
> disconnect the adapter. A specific ACPI method allows to toggle the WLAN
> LED state regardless.
>
> These are barebone laptops, sold under quite a lot of brands and
> configurations, with different firmwares and so on. I can only say for sure
> that this issue is present for all the models sold under a specific brand,
> that's why I'm reluctant to enable this by default with a DMI check.
>
> Thus, the new `led_workaround` option registers this LED with the
> corresponding subsystem, making possible to use a software-based trigger
> (rfkill for instance to synchronize the LED with the softkill state).
>
> Thank you for your time,
>
> --
> Guillaume Douézan-Grard
>
>
> Changes since v1:
>
> * leave devices names unchanged for ABI compatibility,
> * fix label names,
> * separate module authors definition,
> * add commit description to Patch 3.
>
>
> Guillaume Douézan-Grard (4):
>   platform/x86: topstar-laptop: non-functional changes
>   platform/x86: topstar-laptop: change to generic module
>   platform/x86: topstar-laptop: add platform device
>   platform/x86: topstar-laptop: add optional WLAN LED workaround
>
>  drivers/platform/x86/Kconfig          |   2 +
>  drivers/platform/x86/topstar-laptop.c | 334 ++++++++++++++++++++++++++--------
>  2 files changed, 265 insertions(+), 71 deletions(-)
>
> --
> 2.14.3
>



-- 
With Best Regards,
Andy Shevchenko