staging: comedi: me4000: cleanup me4000_cnt_insn_config()

Absorb the cnt_reset and cnt_config helper functions. They are
now both just single line routines.

Remove the printk noise about "Invalid instruction length".

Fix the return value, the value should be the number of data values
used to perform the instruction. The GPCT_RESET instruction only
has one parameter.

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>

drivers/staging/comedi/drivers/me4000.c

@@ -1510,69 +1510,38 @@ static int me4000_dio_insn_config(struct comedi_device *dev,
   Counter section
   ===========================================================================*/
 
-static int cnt_reset(struct comedi_device *dev, unsigned int channel)
-{
-	struct me4000_info *info = dev->private;
-
-	i8254_load(info->timer_regbase, 0, channel, 0,
-			I8254_MODE0 | I8254_BINARY);
-
-	return 0;
-}
-
-static int cnt_config(struct comedi_device *dev, unsigned int channel,
-		      unsigned int mode)
-{
-	struct me4000_info *info = dev->private;
-
-	i8254_set_mode(info->timer_regbase, 0, channel,
-			(mode << 1) | I8254_BINARY);
-
-	return 0;
-}
-
 static int me4000_cnt_insn_config(struct comedi_device *dev,
 				  struct comedi_subdevice *s,
-				  struct comedi_insn *insn, unsigned int *data)
+				  struct comedi_insn *insn,
+				  unsigned int *data)
 {
-
+	struct me4000_info *info = dev->private;
 	int err;
 
 	switch (data[0]) {
 	case GPCT_RESET:
-		if (insn->n != 1) {
-			printk(KERN_ERR
-			       "comedi%d: me4000: me4000_cnt_insn_config(): "
-			       "Invalid instruction length%d\n",
-			       dev->minor, insn->n);
+		if (insn->n != 1)
 			return -EINVAL;
-		}
 
-		err = cnt_reset(dev, insn->chanspec);
+		err = i8254_load(info->timer_regbase, 0, insn->chanspec, 0,
+				I8254_MODE0 | I8254_BINARY);
 		if (err)
 			return err;
 		break;
 	case GPCT_SET_OPERATION:
-		if (insn->n != 2) {
-			printk(KERN_ERR
-			       "comedi%d: me4000: me4000_cnt_insn_config(): "
-			       "Invalid instruction length%d\n",
-			       dev->minor, insn->n);
+		if (insn->n != 2)
 			return -EINVAL;
-		}
 
-		err = cnt_config(dev, insn->chanspec, data[1]);
+		err = i8254_set_mode(info->timer_regbase, 0, insn->chanspec,
+				(data[1] << 1) | I8254_BINARY);
 		if (err)
 			return err;
 		break;
 	default:
-		printk(KERN_ERR
-		       "comedi%d: me4000: me4000_cnt_insn_config(): "
-		       "Invalid instruction\n", dev->minor);
 		return -EINVAL;
 	}
 
-	return 2;
+	return insn->n;
 }
 
 static int me4000_cnt_insn_read(struct comedi_device *dev,