[Intel-gfx] forcewake v5

[Ben Widawsky]

On Thu, Apr 21, 2011 at 07:39:27AM +0100, Chris Wilson wrote:
> On Wed, 20 Apr 2011 16:53:14 -0700, Ben Widawsky <ben at bwidawsk.net> wrote:
> > 
> > Once you're done laughing that I got up to v5 (I think I skipped a v3,
> > and v1 was the IOCTls, so it's really more like a v3) for patches meant
> > to simply allow register reads and wites...
> > 
> > Back to struct_mutex since it turned out to be my mistake regarding the
> > IIR problem. The only issue in the interrupt handler was rps, which has
> > been moved to a workqueue.
> > 
> > Struct_mutex must be held to forcewake, or relinquish forcwake.
> 
> Ok, I got to the end. I feel really squeamish that our register read/write
> routines are getting seriously overcomplicated for interrupt work and
> would like a cut down version for IRQ context.
> 
> But other than that and some silly code that needs to be improved in light
> of your review, it's looking good.
> -Chris

To save starting a new thread, I'm uploading the fixes to this thread. I
will start a new thread if the fixes are accepted.

Ben