linux-kernel - Re: 2.6.20-rc4: usb somehow broken

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Message-Id: <200701141044.20056.prakash@punnoor.de>
Date:	Sun, 14 Jan 2007 10:44:19 +0100
From:	Prakash Punnoor <prakash@...noor.de>
To:	Oliver Neukum <oliver@...kum.org>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	linux-kernel@...r.kernel.org, linux-usb-devel@...ts.sourceforge.net
Subject: Re: 2.6.20-rc4: usb somehow broken

Am Sonntag 14 Januar 2007 10:28 schrieb Oliver Neukum:
> Am Sonntag, 14. Januar 2007 10:08 schrieb Prakash Punnoor:
> > Am Donnerstag 11 Januar 2007 18:28 schrieb Oliver Neukum:
> > > Am Donnerstag, 11. Januar 2007 18:20 schrieb Prakash Punnoor:
> > > > Hi,
> > > >
> > > > I can't scan anymore. :-( I don't know which rc kernel introduced it,
> > > > but this are the messages I get (w/o touching the device/usb cable
> > > > except pluggin it in for the first time):
> > > >
> > > > usb 1-1.2: new full speed USB device using ehci_hcd and address 4
> > > > ehci_hcd 0000:00:0b.1: qh ffff81007bc6c280 (#00) state 4
> > > > usb 1-1.2: configuration #1 chosen from 1 choice
> > > > usb 1-1.2: USB disconnect, address 4
> > > > usb 1-1.2: new full speed USB device using ehci_hcd and address 5
> > > > usb 1-1.2: configuration #1 chosen from 1 choice
> > > > usb 1-1.2: USB disconnect, address 5
> > > > usb 1-1.2: new full speed USB device using ehci_hcd and address 6
> > > > usb 1-1.2: configuration #1 chosen from 1 choice
> > > > usb 1-1.2: USB disconnect, address 6
> > > > usb 1-1.2: new full speed USB device using ehci_hcd and address 7
> > > > usb 1-1.2: configuration #1 chosen from 1 choice
> > > > usb 1-1.2: USB disconnect, address 7
> > > > usb 1-1.2: new full speed USB device using ehci_hcd and address 8
> > > > usb 1-1.2: configuration #1 chosen from 1 choice
>
> [..]
>
> > Hi, I did more tests and I was wrong about "broken". It seems more a
> > time-out problem, ie if I try to use sane again in short intervalls, I
> > will get my device working. The cause seems CONFIG_USB_SUSPEND=y. With
> > 2.6.20-rc5 the
>
> Have you confirmed that by using a kernel without  CONFIG_USB_SUSPEND ?

Yes. I compiled the modules with various settings, reloaded the modules and 
above option made the difference. I also don't get the disconnect mesages, as 
well, w/o USB_SUSPEND.

Cheers,
-- 
(°=                 =°)
//\ Prakash Punnoor /\\
V_/                 \_V

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