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: H Hartley Sweeten <hsweeten@xxxxxxxxxxxxxxxxxxx>
Cc: Ian Abbott <abbotti@xxxxxxxxx>
Cc: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/aio_iiro_16.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/staging/comedi/drivers/aio_iiro_16.c b/drivers/staging/comedi/drivers/aio_iiro_16.c
index 8cd5f11..f84fb74 100644
--- a/drivers/staging/comedi/drivers/aio_iiro_16.c
+++ b/drivers/staging/comedi/drivers/aio_iiro_16.c
@@ -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;
--
2.0.3
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