linux-kernel - [PATCH 09/16] asus-wmi: fix keyboard backlight detection

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Date:	Fri,  1 Jul 2011 11:34:34 +0200
From:	Corentin Chary <corentin.chary@...il.com>
To:	platform-driver-x86@...r.kernel.org
Cc:	Corentin Chary <corentin.chary@...il.com>,
	Corentin Chary <corentincj@...aif.net> (maintainer:ASUS NOTEBOOKS
	AN...),
	Matthew Garrett <mjg@...hat.com> (maintainer:X86 PLATFORM DRIVERS),
	acpi4asus-user@...ts.sourceforge.net (open list:ASUS NOTEBOOKS AN...),
	linux-kernel@...r.kernel.org (open list)
Subject: [PATCH 09/16] asus-wmi: fix keyboard backlight detection

Signed-off-by: Corentin Chary <corentin.chary@...il.com>
---
 drivers/platform/x86/asus-wmi.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wmi.c
index 2ab83d1..332103b 100644
--- a/drivers/platform/x86/asus-wmi.c
+++ b/drivers/platform/x86/asus-wmi.c
@@ -395,8 +395,9 @@ static int kbd_led_read(struct asus_wmi *asus, int *level, int *env)
 	retval = asus_wmi_get_devstate_bits(asus, ASUS_WMI_DEVID_KBD_BACKLIGHT,
 					    0xFFFF);
 
+	/* Unknown status is considered as off */
 	if (retval == 0x8000)
-		retval = -ENODEV;
+		retval = 0;
 
 	if (retval >= 0) {
 		if (level)
-- 
1.7.3.4

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