On Fri, Oct 28, 2011 at 11:48:12PM +0200, Hans J. Koch wrote:

On Fri, Oct 28, 2011 at 10:50:29AM -0500, Kumar Gala wrote:

quoted

For some devices, the default behavior of pgprot_noncached() is not
appropriate for all of its mappable regions. This provides a means for
the kernel side of the UIO driver to override the flags without having
to implement its own full mmap callback.

Thanks for also providing an example driver showing the use of this.
You should also post this driver in a mainline-ready version, I'm a bit
uncomfortable with adding a new function pointer without having any users.

I'm more than "uncomfortable", I'll refuse to take any such patch unless
there is a in-kernel user, otherwise it makes no sense to add the
pointer at all.

thanks,

greg k-h