linux-kernel - Re: [PATCH] tc1100-wmi: fix state reporting

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Message-Id: <200812251758.21371.carlos@strangeworlds.co.uk>
Date:	Thu, 25 Dec 2008 17:58:20 +0000
From:	Carlos Corbacho <carlos@...angeworlds.co.uk>
To:	"Krzysztof Kosiński" <tweenk.pl@...il.com>
Cc:	linux-kernel@...r.kernel.org, linux-acpi@...r.kernel.org,
	"Len Brown" <lenb@...nel.org>
Subject: Re: [PATCH] tc1100-wmi: fix state reporting

Len, please apply.

On Thursday 25 December 2008 13:30:46 Krzysztof Kosiński wrote:
> (Resend)
> This small patch fixes the state reported when reading the files in
> /sys/devices/platofrm/tc1100-wmi/*. The first change fixes always
> returning 0 from the files in sysfs. The second one fixes jogdial
> state reporting to match with the commands used to set it (e.g. now
> after "echo 0 > /sys/devices/platofrm/tc1100-wmi/jogdial", "cat
> /sys/devices/platofrm/tc1100-wmi/jogdial" will return 0 instead of 1).
> Fixes bug #12286.
>
> Signed-off-by: Krzysztof Kosiński <tweenk.pl@...il.com>

Cc: stable@...nel.org
Signed-off-by: Carlos Corbacho <carlos@...angeworlds.co.uk>

>
> --- linux-2.6.27/drivers/misc/tc1100-wmi.c      2008-10-10
> 00:13:53.000000000 +0200
> +++ linux/drivers/misc/tc1100-wmi.c     2008-12-25 02:58:48.000000000 +0100
> @@ -95,9 +95,8 @@
>                return -ENODEV;
>
>        obj = (union acpi_object *) result.pointer;
> -       if (obj && obj->type == ACPI_TYPE_BUFFER &&
> -               obj->buffer.length == sizeof(u32)) {
> -               tmp = *((u32 *) obj->buffer.pointer);
> +       if (obj && obj->type == ACPI_TYPE_INTEGER) {
> +               tmp = obj->integer.value;
>        } else {
>                tmp = 0;
>        }
> @@ -110,7 +109,7 @@
>                *out = (tmp == 3) ? 1 : 0;
>                return 0;
>        case TC1100_INSTANCE_JOGDIAL:
> -               *out = (tmp == 1) ? 1 : 0;
> +               *out = (tmp == 1) ? 0 : 1;
>                return 0;
>        default:
>                return -ENODEV;

-- 
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