staging: comedi: drivers: rtd520: Removed variables that is never used

Variable was assigned a value that was never used.
I have also removed all the code that thereby serves no purpose.

This was found using a static code analysis program called cppcheck

Signed-off-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/comedi/drivers/rtd520.c b/drivers/staging/comedi/drivers/rtd520.c
index 3ccdadeb371f0dbe00a0841cdcd18d6add6bf60c..c94ad12ed446bea7250ccb4c0772076681406f4a 100644 (file)
--- a/drivers/staging/comedi/drivers/rtd520.c
+++ b/drivers/staging/comedi/drivers/rtd520.c
@@ -1027,8 +1027,6 @@ static int rtd_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
 static int rtd_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
 {
        struct rtd_private *devpriv = dev->private;
-       u32 overrun;
-       u16 status;
 
        /* pacer stop source: SOFTWARE */
        writel(0, dev->mmio + LAS0_PACER_STOP);
@@ -1036,8 +1034,6 @@ static int rtd_ai_cancel(struct comedi_device *dev, struct comedi_subdevice *s)
        writel(0, dev->mmio + LAS0_ADC_CONVERSION);
        writew(0, dev->mmio + LAS0_IT);
        devpriv->ai_count = 0;  /* stop and don't transfer any more */
-       status = readw(dev->mmio + LAS0_IT);
-       overrun = readl(dev->mmio + LAS0_OVERRUN) & 0xffff;
        writel(0, dev->mmio + LAS0_ADC_FIFO_CLEAR);
        return 0;
 }