staging: comedi: rtd520: remove 'intCount' from the private data

This variable is cleared when an ai command is initiated and then
incremented with each interrupt. Other than that it's never used.
Just remove it.

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/rtd520.c

@@ -289,7 +289,6 @@ struct rtdPrivate {
 	void __iomem *las1;
 	void __iomem *lcfg;
 
-	unsigned long intCount;	/* interrupt count */
 	long aiCount;		/* total transfer size (samples) */
 	int transCount;		/* # to transfer data. 0->1/2FIFO */
 	int flags;		/* flag event modes */
@@ -630,8 +629,6 @@ static irqreturn_t rtd_interrupt(int irq,	/* interrupt number (ignored) */
 	if (!dev->attached)
 		return IRQ_NONE;
 
-	devpriv->intCount++;	/* DEBUG statistics */
-
 	fifoStatus = readl(devpriv->las0 + LAS0_ADC);
 	/* check for FIFO full, this automatically halts the ADC! */
 	if (!(fifoStatus & FS_ADC_NOT_FULL))	/* 0 -> full */
@@ -903,7 +900,6 @@ static int rtd_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 	writew(devpriv->intMask, devpriv->las0 + LAS0_IT);
 	writel(0, devpriv->las0 + LAS0_ADC_FIFO_CLEAR);
 	writel(0, devpriv->las0 + LAS0_OVERRUN);
-	devpriv->intCount = 0;
 
 	if (!dev->irq)	/* we need interrupts for this */
 		return -ENXIO;