staging: comedi: rti800: remove interrupt code

Interrupts are not enabled, or used, in this driver. Remove the
{request,free}_irq() as well as the dummy interrupt function.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Cc: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 1 insertions, 18 deletions

diff --git a/drivers/staging/comedi/drivers/rti800.c b/drivers/staging/comedi/drivers/rti800.c
index eac727e2dae2..fdd248e8b5e9 100644
--- a/drivers/staging/comedi/drivers/rti800.c
+++ b/drivers/staging/comedi/drivers/rti800.c
@@ -30,7 +30,7 @@ Devices: [Analog Devices] RTI-800 (rti800), RTI-815 (rti815)
 
 Configuration options:
   [0] - I/O port base address
-  [1] - IRQ
+  [1] - IRQ (not supported / unused)
   [2] - A/D reference
         0 = differential
         1 = pseudodifferential (common)
@@ -161,11 +161,6 @@ struct rti800_private {
 
 #define RTI800_TIMEOUT 100
 
-static irqreturn_t rti800_interrupt(int irq, void *dev)
-{
-        return IRQ_HANDLED;
-}
-
 /* settling delay times in usec for different gains */
 static const int gaindelay[] = { 10, 20, 40, 80 };
 
@@ -303,7 +298,6 @@ static int rti800_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 {
         const struct rti800_board *board = comedi_board(dev);
         struct rti800_private *devpriv;
-        unsigned int irq;
         unsigned long iobase;
         int ret;
         struct comedi_subdevice *s;
@@ -317,15 +311,6 @@ static int rti800_attach(struct comedi_device *dev, struct comedi_devconfig *it)
         inb(dev->iobase + RTI800_ADCHI);
         outb(0, dev->iobase + RTI800_CLRFLAGS);
 
-        irq = it->options[1];
-        if (irq) {
-                ret = request_irq(irq, rti800_interrupt, 0, dev->board_name,
-                                  dev);
-                if (ret < 0)
-                        return ret;
-                dev->irq = irq;
-        }
-
         ret = comedi_alloc_subdevices(dev, 4);
         if (ret)
                 return ret;
@@ -425,8 +410,6 @@ static void rti800_detach(struct comedi_device *dev)
 {
         if (dev->iobase)
                 release_region(dev->iobase, RTI800_SIZE);
-        if (dev->irq)
-                free_irq(dev->irq, dev);
 }
 
 static struct comedi_driver rti800_driver = {