linux-kernel - Re: [PATCH 2/2 update] misc: Add dell-laptop driver

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Message-ID: <49367D82.8040305@tuffmail.co.uk>
Date:	Wed, 03 Dec 2008 12:37:22 +0000
From:	Alan Jenkins <alan-jenkins@...fmail.co.uk>
To:	Matthew Garrett <mjg59@...f.ucam.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, Matt_Domsch@...l.com, greg@...ah.com,
	linux-acpi@...r.kernel.org, Richard Purdie <rpurdie@...ys.net>,
	Ivo van Doorn <ivdoorn@...il.com>
Subject: Re: [PATCH 2/2 update] misc: Add dell-laptop driver

Matthew Garrett wrote:
> misc: Add dell-laptop driver
>     
> Add a driver for controling Dell-specific backlight and rfkill interfaces.
> This driver makes use of the dcdbas interface to the Dell firmware to allow
> the backlight and rfkill interfaces on Dell systems to be driven through the
> standardised sysfs interfaces.
>     
> Signed-off-by: Matthew Garrett <mjg@...hat.com>
>
> ---
>
> Contains Andrew's suggested updates, plus a fix for a leak on the init 
> error path.
>   

I see you don't call rfkill_set_default(). Do Dell firmwares support
persistent rfkill state?

My ill-informed guess is that it shouldn't hurt to call it. If the
firmware is sane, it will initialize the rfkill to a useful state.
Otherwise, the radio(s) would be unusable without the platform driver.
But do feel free to ignore me, if you suspect the firmware of insanity :).

Regards
Alan
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