Re: [SPARC64]: Eliminate race condition reading Hummingbird STICK register

["David S. Miller" <davem@davemloft.net>]

From: Richard Mortimer <richm@oldelvet.org.uk>
Date: Mon, 16 Jan 2006 23:05:06 +0000

> [SPARC64]: Eliminate race condition reading Hummingbird STICK register
> 
> Ensure a consistent value is read from the STICK register by ensuring
> that both high and low are read without high changing due to a roll
> over of the low register.
> 
> Signed-off-by: Richard Mortimer <richm@oldelvet.org.uk>

It's so sad that I spent such an enormous amount time specifically
trying to get this sequence right and yet still messed it up!

Nice job Richard, I'll apply your patch and submit it to -stable
as well.

Thanks a lot.