pseries/eeh: Handle RTAS delay requests in configure_bridge

[Russell Currey]

On Wed, 2016-03-23 at 21:39 +1100, Michael Ellerman wrote:
> On Wed, 2016-03-23 at 13:52 +1100, Russell Currey wrote:
> > 
> > On Wed, 2016-03-23 at 11:38 +1100, Michael Ellerman wrote:
> > > 
> > > On Tue, 2016-22-03 at 00:34:55 UTC, Russell Currey wrote:
> > > > 
> > > > 
> > > > +		case RTAS_EXTENDED_DELAY_MIN+2:
> > > > +			mwait = 100;
> > > > +			break;
> > > > +		default:
> > > > +			goto err;
> > > > +		}
> > > > +
> > > > +		max_wait -= mwait;
> > > > +		msleep(mwait);
> > 
> > > 
> > > Can you use rtas_busy_delay() ?
> > Wasn't aware of that, makes life a lot easier.  Do you know if the 0.2s
> > maximum delay also applies across the board?  I definitely want to
> > enforce
> > it here, but if it is ubiquitous then it should be in rtas_busy_delay.
> Not sure sorry, you'll have to read PAPR :)
It doesn't mention anything, but I was more concerned about whether it's
ever sensible to have that much of a sleep in any case.  Probably safe to
ignore given it hasn't been a problem up to this point.
> 
> cheers
>