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

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Message-ID: <298610bb0812241845h41f5f916p73f85c64367ed8c@mail.gmail.com>
Date:	Thu, 25 Dec 2008 03:45:25 +0100
From:	"Krzysztof Kosiński" <tweenk.pl@...il.com>
To:	linux-kernel@...r.kernel.org
Cc:	carlos@...angeworlds.co.uk
Subject: [PATCH] tc1100-wmi: fix state reporting

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 reprting 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).

Please CC any replies to me (I'm not subscribed).
Regards, Krzysztof Kosiński

--- 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;