Commit ffe1cb9a authored by H Hartley Sweeten's avatar H Hartley Sweeten Committed by Greg Kroah-Hartman
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staging: comedi: aio_iiro_16: introduce aio_iiro_enable_irq() 



This board supports interrupts on change of state of the digital inputs.

Introduce a helper function to enable/disable the interrupt. Use the new
helper function to ensure that interrupts are initially disabled during
the driver (*attach).

Signed-off-by: default avatarH Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: default avatarIan Abbott <abbotti@mev.co.uk>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 21f1801f

drivers/staging/comedi/drivers/aio_iiro_16.c

+10 −0
Original line number Diff line number Diff line
@@ -34,6 +34,14 @@ 
#define AIO_IIRO_16_RELAY_8_15	0x04

#define AIO_IIRO_16_INPUT_8_15	0x05



static void aio_iiro_enable_irq(struct comedi_device *dev, bool enable)

{

	if (enable)

		inb(dev->iobase + AIO_IIRO_16_IRQ);

	else

		outb(0, dev->iobase + AIO_IIRO_16_IRQ);

}



static int aio_iiro_16_do_insn_bits(struct comedi_device *dev,

				    struct comedi_subdevice *s,

				    struct comedi_insn *insn,
@@ -72,6 +80,8 @@ static int aio_iiro_16_attach(struct comedi_device *dev, 
	if (ret)

		return ret;



	aio_iiro_enable_irq(dev, false);



	ret = comedi_alloc_subdevices(dev, 2);

	if (ret)

		return ret;