Date: Tue, 13 May 2003 11:09:13 -0700
From: Greg KH <greg@kroah.com>
To: Paul Fulghum <paulkf@microgate.com>
Cc: Alan Stern <stern@rowland.harvard.edu>, Andrew Morton <akpm@digeo.com>,
       "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
       Arnd Bergmann <arnd@arndb.de>, johannes@erdfelt.com
Subject: Re: 2.5.69 Interrupt Latency
Message-ID: <20030513180913.GA10752@kroah.com>
References: <Pine.LNX.4.44L0.0305131117240.3274-100000@ida.rowland.org> <1052840106.2255.24.camel@diemos> <20030513173044.GB10284@kroah.com> <1052830860.1992.2.camel@diemos>
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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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