On Fri, Jun 07, 2019 at 10:58:34AM +0000, Dragan Cvetic wrote:
> > On Sat, May 25, 2019 at 12:37:17PM +0100, Dragan Cvetic wrote:
> > > +static int xsdfec_dev_open(struct inode *iptr, struct file *fptr)
> > > +{
> > > + return 0;
> > > +}
> > > +
> > > +static int xsdfec_dev_release(struct inode *iptr, struct file *fptr)
> > > +{
> > > + return 0;
> > > +}
> >
> > empty open/close functions are never needed, just drop them.
> >
>
> open() is needed to allocate file descriptor eg.
> fd = open(dev_name, O_RDWR);
But you do nothing in those open/release callbacks. Remove them and see
that the code works just fine :)
thanks,
greg k-h
