staging: comedi: amplc_pci230: reduce indentation in pci230_ai_inttrig_convert()

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

drivers/staging/comedi/drivers/amplc_pci230.c

@@ -1802,22 +1802,22 @@ static int pci230_ai_inttrig_convert(struct comedi_device *dev,
 {
 	struct pci230_private *devpriv = dev->private;
 	unsigned long irqflags;
+	unsigned int delayus;
 
 	if (trig_num)
 		return -EINVAL;
 
 	spin_lock_irqsave(&devpriv->ai_stop_spinlock, irqflags);
-	if (devpriv->ai_cmd_started) {
-		unsigned int delayus;
-
+	if (!devpriv->ai_cmd_started) {
+		spin_unlock_irqrestore(&devpriv->ai_stop_spinlock, irqflags);
+		return 1;
+	}
 	/*
 	 * Trigger conversion by toggling Z2-CT2 output.
 	 * Finish with output high.
 	 */
-		i8254_set_mode(dev->iobase + PCI230_Z2_CT_BASE, 0,
-			       2, I8254_MODE0);
-		i8254_set_mode(dev->iobase + PCI230_Z2_CT_BASE, 0,
-			       2, I8254_MODE1);
+	i8254_set_mode(dev->iobase + PCI230_Z2_CT_BASE, 0, 2, I8254_MODE0);
+	i8254_set_mode(dev->iobase + PCI230_Z2_CT_BASE, 0, 2, I8254_MODE1);
 	/*
 	 * Delay.  Should driver be responsible for this?  An
 	 * alternative would be to wait until conversion is complete,
@@ -1825,8 +1825,8 @@ static int pci230_ai_inttrig_convert(struct comedi_device *dev,
 	 * bit has a different meaning when FIFO enabled (and when
 	 * FIFO not enabled, it only works for software triggers).
 	 */
-		if ((devpriv->adccon & PCI230_ADC_IM_MASK) ==
-		    PCI230_ADC_IM_DIF && devpriv->hwver == 0) {
+	if ((devpriv->adccon & PCI230_ADC_IM_MASK) == PCI230_ADC_IM_DIF &&
+	    devpriv->hwver == 0) {
 		/* PCI230/260 in differential mode */
 		delayus = 8;
 	} else {
@@ -1835,10 +1835,6 @@ static int pci230_ai_inttrig_convert(struct comedi_device *dev,
 	}
 	spin_unlock_irqrestore(&devpriv->ai_stop_spinlock, irqflags);
 	udelay(delayus);
-	} else {
-		spin_unlock_irqrestore(&devpriv->ai_stop_spinlock, irqflags);
-	}
-
 	return 1;
 }