UIO driver test

[Gadre Nayan]

Oh offcourse, I forgot.

So then should a char driver interface suffice.
On 15 Apr 2016 7:29 p.m., "Greg KH" <greg at kroah.com> wrote:

> On Fri, Apr 15, 2016 at 01:59:12PM +0530, Gadre Nayan wrote:
> > Dear all,
> >
> > I am trying to test a dummy UIO driver to get timer interrupt events
> > in Userspace.
> >
> > I register the UIO driver as a platform driver:
> >
> > static struct platform_device *uio_dummy_device;
> >
> > static struct device_driver uio_dummy_driver = {
> >         .name           = "uio_dummy",
> >         .bus            = &platform_bus_type,
> >         .probe          = uio_dummy_probe,
> >         .remove         = uio_dummy_remove,
> >         .shutdown       = uio_dummy_shutdown,
> > };
> >
> > /*
> >  * Main initialization/remove routines
> >  */
> > static int __init uio_dummy_init(void)
> > {
> >         printk("uio_dummy_init( )\n" );
> >         uio_dummy_device = platform_device_register_simple("uio_dummy",
> -1,
> >                                                            NULL, 0);
>
> Why are you using a platform driver and device on x86?  That's not going
> to work at all, as your device doesn't have an irq.  Please use this on
> a "real" device that has an interrupt assigned to it.
>
> hope this helps,
>
> greg k-h
>
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