If the irq_mask member has a value of 0, then interrupts are disabled on the device. Therefore, IRQ_NONE should be returned if the irq_mask member is 0.
Signed-off-by: William Breathitt Gray <[email protected]> --- drivers/gpio/gpio-104-idio-16.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpio/gpio-104-idio-16.c b/drivers/gpio/gpio-104-idio-16.c index 4d69b50..09fe032 100644 --- a/drivers/gpio/gpio-104-idio-16.c +++ b/drivers/gpio/gpio-104-idio-16.c @@ -175,6 +175,9 @@ static irqreturn_t idio_16_irq_handler(int irq, void *dev_id) struct gpio_chip *const chip = &idio16gpio->chip; int gpio; + if (!idio16gpio->irq_mask) + return IRQ_NONE; + for_each_set_bit(gpio, &idio16gpio->irq_mask, chip->ngpio) generic_handle_irq(irq_find_mapping(chip->irqdomain, gpio)); -- 2.4.10
