• Linus Walleij's avatar
    gpio: tag line labels used for interrupts · 3940c34a
    Linus Walleij authored
    When a GPIO line is marked as used for an interrupt, it is
    helpful to set the label to "interrupt" so we know what is
    going on when inspecting the lines.
    If a GPIO is already properly named by gpiod_get*() we don't
    need to do this. It only happens when a line is used from
    the irqchip side of a GPIO driver without communicating
    with the GPIO side, such as when gpiochip is used as interrupt
    provider in the device tree.
    If the line is still marked as used by "interrupt" when we
    unmark it as used by an interrupt, also remove this label
    from the descriptor.
    Also shape up the code around unmarking IRQ lines.
    Signed-off-by: Linus Walleij's avatarLinus Walleij <linus.walleij@linaro.org>
gpiolib.c 94.7 KB