linux-kernel - Re: [PATCH 2/3] Add rfkill support to compal-laptop

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Date:	Wed, 19 Aug 2009 11:46:36 -0500
From:	Mario Limonciello <mario_limonciello@...l.com>
To:	Johannes Berg <johannes@...solutions.net>
CC:	Alan Jenkins <sourcejedi.lkml@...glemail.com>,
	Marcel Holtmann <marcel@...tmann.org>,
	cezary.jackiewicz@...il.com, linux-acpi@...r.kernel.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"linux-wireless@...r.kernel.org" <linux-wireless@...r.kernel.org>
Subject: Re: [PATCH 2/3] Add rfkill support to compal-laptop

Hi Johannes:

Thanks for looking.

Johannes Berg wrote:
> Ah, heh, thanks Alan for pointing out there was a patch here :)
>
>   
>
> I don't quite understand the "| radio" bit since that seems to be the
> soft kill bit according to rfkill_set()?
>   
Yeah you're right, this bit was unnecessary.  I pulled it out.
> Anyhow, here you reject the request to set the soft bit. I suspect you
> could let it go through but it would only change the soft bit in the
> BIOS, nothing else really.
>
> Two options:
> 1) You can let it go though, in that case do that, and remove the sw
>    block stuff from poll() completely.
>
> 2) You can't let it go through. In this case, you need to leave set as
>    it is, but implement poll like this:
>
> 	sw_block = rfkill_set_hw_state(rfkill, hw_blocked);
> 	compal_rfkill_set(data, sw_block);
>
> so that when the user soft-blocks the device while hard-blocked, the
> soft block is still honoured after pushing the button on the laptop.
>
>   
OK, the second option sounds more desirable, so I've implemented that.

-- 
Mario Limonciello
*Dell | Linux Engineering*
mario_limonciello@...l.com

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