From: Zhao Yakui <yakui.zhao@intel.com>
Date: Tue, 11 Mar 2008 08:56:47 +0000 (+0800)
Subject: ACPI: Ignore _BQC object when registering backlight device
X-Git-Tag: v2.6.25-rc6~19^2~4^8
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7c0ea45be4f114d85ee35caeead8e1660699c46f;p=linux-2.6

ACPI: Ignore _BQC object when registering backlight device

According to acpi spec , the objects of  _BCL and _BCM are required if
integrated LCD is present and supports brightness level .The _BQC is
the optional object. So the _BQC object is ignored when the backlight device
is registered in ACPI video driver.

http://bugzilla.kernel.org/show_bug.cgi?id=10206

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Zhang Rui  <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
---

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 12cce69b54..ace958cb38 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -713,7 +713,7 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 
 	kfree(obj);
 
-	if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){
+	if (device->cap._BCL && device->cap._BCM && max_level > 0) {
 		int result;
 		static int count = 0;
 		char *name;