diff options
Diffstat (limited to 'drivers/acpi/video.c')
| -rw-r--r-- | drivers/acpi/video.c | 19 |
1 files changed, 14 insertions, 5 deletions
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 64c889331f3..e8a51a1700f 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -741,7 +741,7 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) max_level = acpi_video_init_brightness(device); - 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; @@ -753,7 +753,17 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) device->backlight = backlight_device_register(name, NULL, device, &acpi_backlight_ops); device->backlight->props.max_brightness = device->brightness->count-3; - device->backlight->props.brightness = acpi_video_get_brightness(device->backlight); + /* + * If there exists the _BQC object, the _BQC object will be + * called to get the current backlight brightness. Otherwise + * the brightness will be set to the maximum. + */ + if (device->cap._BQC) + device->backlight->props.brightness = + acpi_video_get_brightness(device->backlight); + else + device->backlight->props.brightness = + device->backlight->props.max_brightness; backlight_update_status(device->backlight); kfree(name); @@ -762,9 +772,8 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device) if (IS_ERR(device->cdev)) return; - printk(KERN_INFO PREFIX - "%s is registered as cooling_device%d\n", - device->dev->dev.bus_id, device->cdev->id); + dev_info(&device->dev->dev, "registered as cooling_device%d\n", + device->cdev->id); result = sysfs_create_link(&device->dev->dev.kobj, &device->cdev->device.kobj, "thermal_cooling"); |