Re: [PATCH] x86: usb debug port early console

[H. Peter Anvin]

Eric W. Biederman wrote:
> > > +static void dbgp_breath(void)
> > > +{
> > > +	/* Sleep to give the debug port a chance to breathe */
> > > +}
> > I expect the compiler will optimise away any calls to this.
>
> It is documentation that is if it might be a good idea to not hit the
> hardware there.

Sounds an awful lot like cpu_relax(); doesn't it?

	-hpa

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