On Thu, Dec 3, 2015 at 2:23 AM, William Breathitt Gray <[email protected]> wrote:
> The ACCES 104-IDIO-16 uses a single interrupt to indicate a possible > change-of-state in any of the digital input lines. As such, only a > single write to the device's "Clear Interrupt" register is necessary to > acknowledge the IRQ for all respective GPIO. > > This patch moves the "Clear Interrupt" register write operation from the > irq_ack callback to the IRQ handler function, wherefore each interrupt > may be cleared respectively by executing a single outb call at the end > of the idio_16_irq_handler function, rather than multiple redundant outb > calls as a result of the generic_handle_irq call for each masked GPIO. > > Signed-off-by: William Breathitt Gray <[email protected]> Rebased and applied this patch. Yours, Linus Walleij -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
