Commits
Seth Forshee committed 62cce752662
toshiba_acpi: Only register backlight device when interface is read/write Currently the backlight device is registered unconditionally, but many (probably most) Toshibas either don't support HCI_LCD_BRIGHTNESS or only support reading from it. This patch adds a test of HCI_LCD_BRIGHTNESS during initialization and only registers the backlight device if this interface supports both reads and writes. Cc: Akio Idehara <zbe64533@gmail.com> Signed-off-by: Seth Forshee <seth.forshee@canonical.com> Signed-off-by: Matthew Garrett <mjg@redhat.com>