[PATCH v2 4/6] staging: comedi: Remove set but not used variable 'data'

[Greg KH]

On Tue, Oct 08, 2019 at 01:55:01PM +0100, Ian Abbott wrote:
> On 08/10/2019 08:41, zhengbin wrote:
> > Fixes gcc '-Wunused-but-set-variable' warning:
> > 
> > drivers/staging/comedi/drivers/dt2814.c: In function dt2814_interrupt:
> > drivers/staging/comedi/drivers/dt2814.c:193:6: warning: variable data set but not used [-Wunused-but-set-variable]
> > 
> > It is not used since commit 7806012e97ed ("staging:
> > comedi: refactor dt2814 driver and use module_comedi_driver")
> > 
> > Reported-by: Hulk Robot <hulkci at huawei.com>
> > Signed-off-by: zhengbin <zhengbin13 at huawei.com>
> > ---
> >   drivers/staging/comedi/drivers/dt2814.c | 3 ---
> >   1 file changed, 3 deletions(-)
> > 
> > diff --git a/drivers/staging/comedi/drivers/dt2814.c b/drivers/staging/comedi/drivers/dt2814.c
> > index d2c7157..4825168 100644
> > --- a/drivers/staging/comedi/drivers/dt2814.c
> > +++ b/drivers/staging/comedi/drivers/dt2814.c
> > @@ -190,7 +190,6 @@ static irqreturn_t dt2814_interrupt(int irq, void *d)
> >   	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");
> > @@ -200,8 +199,6 @@ static irqreturn_t dt2814_interrupt(int irq, void *d)
> >   	hi = inb(dev->iobase + DT2814_DATA);
> >   	lo = inb(dev->iobase + DT2814_DATA);
> > 
> > -	data = (hi << 4) | (lo >> 4);
> > -
> >   	if (!(--devpriv->ntrig)) {
> >   		int i;
> > 
> > --
> > 2.7.4
> > 
> 
> There is something fishy going on there.  The driver ought to be writing the
> data to a buffer.
> 
> Can I suggest omitting this patch from the series so I can investigate and
> supply a proper fix?

Now dropped.