linux-kernel - Re: [PATCH 1/2] RFC: ACPI: Interface for ACPI drivers to place quirk code which gets executed early

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Date:	Mon, 2 Feb 2009 21:22:46 +0100
From:	Luca Tettamanti <kronos.it@...il.com>
To:	Thomas Renninger <trenn@...e.de>
Cc:	Jean Delvare <khali@...ux-fr.org>,
	Hans de Goede <hdegoede@...hat.com>,
	linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
	Len Brown <lenb@...nel.org>
Subject: Re: [PATCH 1/2] RFC: ACPI: Interface for ACPI drivers to place
	quirk code which gets executed early

Il Mon, Feb 02, 2009 at 06:22:10PM +0100, Thomas Renninger ha scritto: 
> These two patches are tested on a ASUS machine and worked as expected,
> but probably may still need some cleanup.

I'd keep the DMI+HID approach since it's more flexible:
- (AFAICS) Thinkpads have different methods for hwmon depending on the
  model and no fixed HID
- With DMI it would be possible to include ASUS motherboards (ATK w/
  hwmon) but exclude ASUS laptops (ATK w/o hwmon).

> diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
> index c54d7b6..1c25747 100644
> --- a/drivers/acpi/scan.c
> +++ b/drivers/acpi/scan.c
> @@ -10,6 +10,7 @@
>  #include <linux/kthread.h>
>  
>  #include <acpi/acpi_drivers.h>
> +#include "acpi.h"
>  
>  #define _COMPONENT		ACPI_BUS_COMPONENT
>  ACPI_MODULE_NAME("scan");
> @@ -1562,6 +1563,8 @@ static int __init acpi_scan_init(void)
>  
>  	if (result)
>  		acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL);
> +	else
> +		acpi_device_quirks();

Hum, it's not immediatly clear why you put that call in the else
branch. Maybe put:

if (!result)
        acpi_device_quirks();

before the cleanup?

Luca
-- 
"La mia teoria scientifica preferita e` quella secondo la quale gli 
 anelli di Saturno sarebbero interamente composti dai bagagli andati 
 persi nei viaggi aerei." -- Mark Russel
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