staging: comedi: pcmmio: remove 'asic' member from subdevice private data

This member of the subdevice private data is always initialized to '0' by
the only subdevice that uses it. Since we only have one asic on the board
it's really not needed. Just remove it.
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/pcmmio.c

@@ -209,11 +209,6 @@ struct pcmmio_subdev_private {
 
 			/* The below is only used for intr subdevices */
 			struct {
-				/*
-				 * if non-negative, this subdev has an
-				 * interrupt asic
-				 */
-				int asic;
 				/*
 				 * if nonnegative, the first channel id for
 				 * interrupts.
@@ -450,11 +445,6 @@ static irqreturn_t interrupt_pcmmio(int irq, void *d)
 				 * TODO here: dispatch io lines to subdevs
 				 * with commands..
 				 */
-					/*
-					 * this is an interrupt subdev,
-					 * and it matches this asic!
-					 */
-					if (subpriv->dio.intr.asic == 0) {
 						unsigned long flags;
 						unsigned oldevents;
 
@@ -535,8 +525,6 @@ static irqreturn_t interrupt_pcmmio(int irq, void *d)
 
 			}
 
-			}
-
 	if (!got1)
 		return IRQ_NONE;	/* interrupt from other source */
 	return IRQ_HANDLED;
@@ -554,13 +542,9 @@ static int pcmmio_start_intr(struct comedi_device *dev,
 		return 1;
 	} else {
 		unsigned bits = 0, pol_bits = 0, n;
-		int nports, firstport, asic, port;
+		int nports, firstport, port;
 		struct comedi_cmd *cmd = &s->async->cmd;
 
-		asic = subpriv->dio.intr.asic;
-		if (asic < 0)
-			return 1;	/* not an interrupt
-					   subdev */
 		subpriv->dio.intr.enabled_mask = 0;
 		subpriv->dio.intr.active = 1;
 		nports = subpriv->dio.intr.num_asic_chans / CHANS_PER_PORT;
@@ -984,7 +968,6 @@ static int pcmmio_attach(struct comedi_device *dev, struct comedi_devconfig *it)
 
 	s->private = &devpriv->sprivs[2];
 	subpriv = s->private;
-	subpriv->dio.intr.asic = 0;
 	subpriv->dio.intr.active = 0;
 	subpriv->dio.intr.stop_count = 0;
 	subpriv->dio.intr.first_chan = 0;