When testing if the firmware's initial value is valid, we should use the corrected level value instead of the raw value returned from firmware. Signed-off-by: Aaron Lu <aaron.lu@xxxxxxxxx> Cc: Danny Baumann <dannybaumann@xxxxxx> Cc: stable <stable@xxxxxxxxxx> --- drivers/acpi/video.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 38c3a28d6392..bf521b36c2f9 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -856,7 +856,7 @@ acpi_video_init_brightness(struct acpi_video_device *device) * or an index). Set the backlight to max_level in this case. */ for (i = 2; i < br->count; i++) - if (level_old == br->levels[i]) + if (level == br->levels[i]) break; if (i == br->count) level = max_level; -- 1.8.4.39.ga0d3f10 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html