linux-kernel - Re: [linux-usb-devel] USB-related oops in sysfs with linux v2.6.23-rc3-50-g28e8351

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Date:	Tue, 21 Aug 2007 07:28:59 -0500
From:	Florin Iucha <florin@...ha.net>
To:	Jiri Kosina <jikos@...os.cz>
Cc:	linux-usb-devel@...ts.sourceforge.net,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Greg KH <gregkh@...e.de>,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>
Subject: Re: [linux-usb-devel] USB-related oops in sysfs with linux
	v2.6.23-rc3-50-g28e8351

On Tue, Aug 21, 2007 at 02:04:26PM +0200, Jiri Kosina wrote:
> > I have enabled USB debugging and I see a bunch (=46) of these messages:
> 
> >    [  $timestamp] usb 1-9: usb auto-suspend
> >    [  $timestamp] usb 1-9: usb auto-resume
> >    [  $timestamp] ehci_hcd 0000:00:02.1: GetStatus port 9 status 001005 POWER sig=se0 PE CONNECT
> >    [  $timestamp] usb 1-9: finish resume
> > The messages continued to be logged, even after the keyboard has
> > become unresponsive.
> 
> I guess that this is the card reader being suspended and resumed 
> afterwards. Do you by any chance see any improvement when you
> 
> - rmmod ehci_hcd

It's built-in.  Should I build it as a module?  This machine has only
usb 2.0 ports.  If I rmmod it, will my USB keyboard still work?

[The card reader is one of those that fit into a 3.5" bay, connected
straight to the motherboard controller, so it's a bit of a pain to
disconnect.]

> - disable USB_AUTOSUSPEND

You mean CONFIG_USB_SUSPEND?

florin

-- 
Bruce Schneier expects the Spanish Inquisition.
      http://geekz.co.uk/schneierfacts/fact/163

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