linux-kernel - Re: [linux-usb-devel] 2.6.18-rc6-mm1 (-mm2): ohci resume problem

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Message-ID: <Pine.LNX.4.44L0.0609141320020.5715-100000@iolanthe.rowland.org>
Date:	Thu, 14 Sep 2006 13:22:43 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
cc:	Andrew Morton <akpm@...l.org>, Mattia Dongili <malattia@...ux.it>,
	Robert Hancock <hancockr@...w.ca>,
	Kernel development list <linux-kernel@...r.kernel.org>,
	USB development list <linux-usb-devel@...ts.sourceforge.net>
Subject: Re: [linux-usb-devel] 2.6.18-rc6-mm1 (-mm2): ohci resume problem

On Thu, 14 Sep 2006, Rafael J. Wysocki wrote:

> Now USB didn't work after the first resume (kernel configured with USB_SUSPEND
> unset).
> 
> The dmesg output is attached.

This is getting too confusing.  :-(

Let's try a simpler test.  Leave USB_SUSPEND unset.

First rmmod ohci-hcd.  None of your full-speed USB devices will work, but 
that's okay.  Try the suspend-twice test and see what happens.

Second, rmmod ehci-hcd and modprobe ohci-hcd.  Again try the suspend-twice 
test.

Having only one USB host driver loaded at any time should simplify things.

Alan Stern

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