Re: 2.5.69 Interrupt Latency

From: Greg KH (greg@kroah.com)
Date: Tue May 13 2003 - 13:09:13 EST


On Tue, May 13, 2003 at 08:01:01AM -0500, Paul Fulghum wrote:
> On Tue, 2003-05-13 at 12:30, Greg KH wrote:
> > On Tue, May 13, 2003 at 10:35:07AM -0500, Paul Fulghum wrote:
> > > On Tue, 2003-05-13 at 10:26, Alan Stern wrote:
> > >
> > > > Putting in a sanity check for the global suspend state will be very easy.
> > > > But I would like to point out that this "global suspend" does not refer to
> > > > the entire system, only the USB bus.
> > >
> > > That is a problem then, because the delay can still
> > > occur during normal system operation.
> >
> > Ok, can you try the attached patch and see if it causes your latency
> > problem to go away?
>
> I applied the patch plus a couple of printk statements,
> and the wakeup_hc() is being continuously called
> as well as actually executing the delay.

Is the suspend_hc() function ever getting called by anyone in that
driver?

thanks,

greg k-h
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