Re: [PATCH] tweak spin logic for hpilo

[Robert Hancock]

Altobelli, David wrote:
> > From: Andrew Morton
> > David Altobelli wrote:
> > > Change hpilo open and close logic to spin for 10usec between checking
> > > device, rather than every usec.
> > err.. Why?
>
> Because the loop is coded to take up to 10ms, it seemed prudent to increase
> the interval between polling the device, to reduce the load on the system and
> allow more other work to happen.

You're using udelay, which is a spin loop. Nothing else can happen on 
that CPU while it's delaying anyway.
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