Variable ar assigned a value that is 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@xxxxxxxxxxxxxxxxxx>
---
drivers/staging/comedi/drivers/dt2814.c | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/drivers/staging/comedi/drivers/dt2814.c b/drivers/staging/comedi/drivers/dt2814.c
index 9805be1..d2e7a4e 100644
--- a/drivers/staging/comedi/drivers/dt2814.c
+++ b/drivers/staging/comedi/drivers/dt2814.c
@@ -198,21 +198,17 @@ static int dt2814_ai_cmd(struct comedi_device *dev, struct comedi_subdevice *s)
static irqreturn_t dt2814_interrupt(int irq, void *d)
{
- int lo, hi;
struct comedi_device *dev = d;
struct dt2814_private *devpriv = dev->private;
struct comedi_subdevice *s = dev->read_subdev;
- int data;
if (!dev->attached) {
dev_err(dev->class_dev, "spurious interrupt\n");
return IRQ_HANDLED;
}
- hi = inb(dev->iobase + DT2814_DATA);
- lo = inb(dev->iobase + DT2814_DATA);
-
- data = (hi << 4) | (lo >> 4);
+ inb(dev->iobase + DT2814_DATA);
+ inb(dev->iobase + DT2814_DATA);
if (!(--devpriv->ntrig)) {
int i;
@@ -239,7 +235,6 @@ static int dt2814_attach(struct comedi_device *dev, struct comedi_devconfig *it)
struct dt2814_private *devpriv;
struct comedi_subdevice *s;
int ret;
- int i;
ret = comedi_request_region(dev, it->options[0], 0x2);
if (ret)
@@ -251,8 +246,8 @@ static int dt2814_attach(struct comedi_device *dev, struct comedi_devconfig *it)
dev_err(dev->class_dev, "reset error (fatal)\n");
return -EIO;
}
- i = inb(dev->iobase + DT2814_DATA);
- i = inb(dev->iobase + DT2814_DATA);
+ inb(dev->iobase + DT2814_DATA);
+ inb(dev->iobase + DT2814_DATA);
if (it->options[1]) {
ret = request_irq(it->options[1], dt2814_interrupt, 0,
--
1.7.10.4
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