Merge branch 'linus' into x86/memory-corruption-check

1 files changed, 22 insertions, 20 deletions

diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index a29b0ccac65..baa44192972 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -41,7 +41,6 @@
 #include <acpi/acpi_bus.h>
 #include <acpi/acpi_drivers.h>
 
-#define ACPI_VIDEO_COMPONENT		0x08000000
 #define ACPI_VIDEO_CLASS		"video"
 #define ACPI_VIDEO_BUS_NAME		"Video Bus"
 #define ACPI_VIDEO_DEVICE_NAME		"Video Device"
@@ -739,7 +738,8 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 		device->cap._DSS = 1;
 	}
 
-	max_level = acpi_video_init_brightness(device);
+	if (acpi_video_backlight_support())
+		max_level = acpi_video_init_brightness(device);
 
 	if (device->cap._BCL && device->cap._BCM && max_level > 0) {
 		int result;
@@ -785,18 +785,21 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
 			printk(KERN_ERR PREFIX "Create sysfs link\n");
 
 	}
-	if (device->cap._DCS && device->cap._DSS){
-		static int count = 0;
-		char *name;
-		name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
-		if (!name)
-			return;
-		sprintf(name, "acpi_video%d", count++);
-		device->output_dev = video_output_register(name,
-				NULL, device, &acpi_output_properties);
-		kfree(name);
+
+	if (acpi_video_display_switch_support()) {
+
+		if (device->cap._DCS && device->cap._DSS) {
+			static int count;
+			char *name;
+			name = kzalloc(MAX_NAME_LEN, GFP_KERNEL);
+			if (!name)
+				return;
+			sprintf(name, "acpi_video%d", count++);
+			device->output_dev = video_output_register(name,
+					NULL, device, &acpi_output_properties);
+			kfree(name);
+		}
 	}
-	return;
 }
 
 /*
@@ -842,11 +845,16 @@ static void acpi_video_bus_find_cap(struct acpi_video_bus *video)
 static int acpi_video_bus_check(struct acpi_video_bus *video)
 {
 	acpi_status status = -ENOENT;
-
+	struct device *dev;
 
 	if (!video)
 		return -EINVAL;
 
+	dev = acpi_get_physical_pci_device(video->device->handle);
+	if (!dev)
+		return -ENODEV;
+	put_device(dev);
+
 	/* Since there is no HID, CID and so on for VGA driver, we have
 	 * to check well known required nodes.
 	 */
@@ -2094,12 +2102,6 @@ static int __init acpi_video_init(void)
 {
 	int result = 0;
 
-
-	/*
-	   acpi_dbg_level = 0xFFFFFFFF;
-	   acpi_dbg_layer = 0x08000000;
-	 */
-
 	acpi_video_dir = proc_mkdir(ACPI_VIDEO_CLASS, acpi_root_dir);
 	if (!acpi_video_dir)
 		return -ENODEV;