staging: comedi: rtd520: remove 'intCount' from the private data
authorH Hartley Sweeten <hartleys@visionengravers.com>
Mon, 29 Oct 2012 17:04:58 +0000 (10:04 -0700)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Tue, 30 Oct 2012 17:44:38 +0000 (10:44 -0700)
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

index 6af19bcbcfbc474baf1186c5e74444b18acace32..f118e85bef7a30240117cd1992ce4566a8697fa0 100644 (file)
@@ -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;