linux-kernel - Re: [PATCH] dell-laptop: Add hwswitch

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Date:	Thu, 7 Oct 2010 15:49:05 -0500
From:	Mario Limonciello <superm1@...ntu.com>
To:	Matthew Garrett <mjg59@...f.ucam.org>
Cc:	Keng-Yu Lin <keng-yu.lin@...onical.com>, len.brown@...el.com,
	alan-jenkins@...fmail.co.uk, platform-driver-x86@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] dell-laptop: Add hwswitch_only module parameter

Hi Matthew:

On Thu, Oct 7, 2010 at 08:35, Matthew Garrett <mjg59@...f.ucam.org> wrote:
>
> On Thu, Oct 07, 2010 at 08:30:57AM -0500, Mario Limonciello wrote:
>
> >    In this specific scenario that Ken Yu submitted this patch for, the
> >    firmware will return the same return codes for the SMI's as a functional
> >    machine will.  Machines affected by this will fail to recover after rfkill
> >    is toggled twice.  The symptom will be that the soft block always appears
> >    set to the same setting with continued keypresses.
> >    During the prototype phase this option is quite useful to help debug the
> >    problem it addresses.
>
> Is the kernel able to unblock it under those circumstances?

Manually running rfkill unblock will unblock it in this broken
firmware scenario in question.

--
Mario Limonciello
superm1@...il.com
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