linux-kernel - Re: [Resend] [PATCH] asus-laptop: add Lenovo SL LenovoCare LED support

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Message-ID: <20091208154154.GA26435@srcf.ucam.org>
Date:	Tue, 8 Dec 2009 15:41:54 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Ike Panhc <ike.pan@...onical.com>
Cc:	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	acpi4asus-user@...ts.sourceforge.net,
	Corentin Chary <corentin.chary@...il.com>,
	Alexandre Rostovtsev <tetromino@...il.com>
Subject: Re: [Resend] [PATCH] asus-laptop: add Lenovo SL LenovoCare LED
	support

On Tue, Dec 08, 2009 at 03:37:09PM +0800, Ike Panhc wrote:

>  ASUS_HANDLE(rled_set, ASUS_HOTK_PREFIX "RLED");	/* W1JC */
>  ASUS_HANDLE(pled_set, ASUS_HOTK_PREFIX "PLED");	/* A7J */
>  ASUS_HANDLE(gled_set, ASUS_HOTK_PREFIX "GLED");	/* G1, G2 (probably) */

The driver is controlling the ATKD device, which has a HID of ATK0101. 
These devices are all underneath it...

> +ASUS_HANDLE(lled_set, "\\_SB_.PCI0.SBRG.EC0_.HKEY.TVLS"); /* LenovoCare */

And this one isn't, which is a bit jarring. Looking closer, it's under 
the LEN0014 device, which means that you're trying to touch a method 
that belongs to a device other than the one this driver is bound to. 
That's wrong. You want a separate ACPI driver for the LEN0014 device, 
and this should be called for there. Looking at it, you seem to get 
rfkill as well (the GWAN/SWAN, GBDC/SBDF and GUWB/SUWB methods) and 
maybe some other stuff.

So this shouldn't go in asus-laptop. You'll need to add another separate 
driver for the SL-specific functionality.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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