linux-kernel - Re: 2.6.18-rc6-mm2 (-mm1): ohci_hcd does not recognize new devices

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Date:	Mon, 18 Sep 2006 17:16:32 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
cc:	Andrew Morton <akpm@...l.org>,
	David Brownell <david-b@...bell.net>,
	LKML <linux-kernel@...r.kernel.org>,
	USB development list <linux-usb-devel@...ts.sourceforge.net>,
	Greg KH <greg@...ah.com>
Subject: Re: 2.6.18-rc6-mm2 (-mm1): ohci_hcd does not recognize new devices

On Mon, 18 Sep 2006, Rafael J. Wysocki wrote:

> > > I have carried out a binary search and found that the problem is caused by
> > > 
> > > gregkh-usb-usbcore-remove-usb_suspend_root_hub.patch
> > 
> > Tell me, what happens if you leave that patch installed, and you use 
> > the patch I sent last week (the one that removes a chunk of code from 
> > ohci-hub.c), and you also set CONFIG_USB_SUSPEND?
> 
> The problem continues to happen.
> 
> Moreover, if I revert the above patch and apply the patch removing code
> from ohci-hub.c, the problem reappears.

Very strange.

> > I think the real underlying problem here is that David's implementation of 
> > root-hub suspend in ohci-hcd is incompatible with the overall scheme I've 
> > been working on.  In the end I'll probably have to rewrite the ohci-hcd 
> > code.
> 
> Well, at this point I can only help you by testing some code. ;-)
> 
> Seriously, if you have any new patches to test, please let me know.

I definitely will.  However they won't be ready for a few days...

Alan Stern

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