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@@ -741,7 +741,7 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
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max_level = acpi_video_init_brightness(device);
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- if (device->cap._BCL && device->cap._BCM && device->cap._BQC && max_level > 0){
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+ if (device->cap._BCL && device->cap._BCM && max_level > 0) {
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int result;
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static int count = 0;
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char *name;
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@@ -753,7 +753,17 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
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device->backlight = backlight_device_register(name,
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NULL, device, &acpi_backlight_ops);
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device->backlight->props.max_brightness = device->brightness->count-3;
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- device->backlight->props.brightness = acpi_video_get_brightness(device->backlight);
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+ /*
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+ * If there exists the _BQC object, the _BQC object will be
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+ * called to get the current backlight brightness. Otherwise
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+ * the brightness will be set to the maximum.
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+ */
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+ if (device->cap._BQC)
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+ device->backlight->props.brightness =
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+ acpi_video_get_brightness(device->backlight);
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+ else
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+ device->backlight->props.brightness =
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+ device->backlight->props.max_brightness;
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backlight_update_status(device->backlight);
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kfree(name);
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