Re: [PATCH v2] arch/tile: add hypervisor-based character driver forSPI flash ROM

From: Greg KH
Date: Sun May 29 2011 - 09:47:01 EST


On Sun, May 29, 2011 at 08:18:36AM -0400, Chris Metcalf wrote:
> >> Is there a good example of a character device that has multiple minors and
> >> also is registered with sysfs?
> > Lots of them, look all over the kernel, and in LDD3 there's even an
> > outdated example of one I think.
>
> I didn't actually find many drivers that have both cdev_add with count>1,
> and mention sysfs or kobj, but char/raw.c is one that looks pretty clean.
> (I found only four others total: uio/uio.c, s390/char/vmlogrdr.c,
> staging/comedi/comedi_fops.c, and staging/vme/devices/vme_user.c.)

No, you don't need "raw" kobjects or sysfs at all. Just use the
device_create() call.

Hope this helps,

greg k-h
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