On Sat, Sep 27, 2014 at 08:27:28PM -0700, Mitchel Humpherys wrote:
> From: Matt Wagantall <mattw-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
> 
> It is sometimes necessary to poll a memory-mapped register until its
> value satisfies some condition. Introduce a family of convenience macros
> that do this. Tight-loop and sleeping versions are provided with and
> without timeouts.
> 
> Cc: Thierry Reding <thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
> Cc: Will Deacon <will.deacon-5wv7dgnIgG8@public.gmane.org>
> Signed-off-by: Matt Wagantall <mattw-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
> Signed-off-by: Mitchel Humpherys <mitchelh-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
> ---
>  include/linux/iopoll.h | 77 ++++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 77 insertions(+)
>  create mode 100644 include/linux/iopoll.h

It would be good to provide a changelog with each new version of the
patch. As it is I now have v2 and v3 of this patch in my inbox and I
have no idea what the differences are, so I'd need to download both
and run them through interdiff to find out.

Thierry