linux-kernel - Re: Problems with p55-express and sleeping usb-hds

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Date:	Sat, 14 Nov 2009 11:06:51 +0100
From:	Oliver Neukum <oliver@...kum.org>
To:	Alexander Holler <holler@...oftware.de>
Cc:	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Problems with p55-express and sleeping usb-hds

Am Samstag, 14. November 2009 03:50:53 schrieb Alexander Holler:
> In the excerpt of the log I've posted before, I've cut out the 
> disconnect of the other drive, which has happend almost at the same time 
> (and with the same consequences) as the one shown. In fact I've cut out 
> one line from the log (sorry for that):
> ---------
> Nov 13 19:08:05 krabat ntpd[3381]: kernel time sync status change 2001
> Nov 13 19:47:34 krabat kernel: [ 2655.981980] usb 9-7: reset high speed 
> USB device using ehci_hcd and address 3

Reset.

> Nov 13 19:47:35 krabat kernel: [ 2656.233278] usb 9-1: reset high speed 
> USB device using ehci_hcd and address 4
> Nov 13 19:47:39 krabat kernel: [ 2661.120397] usb 9-7: device firmware 
> changed

Descriptors changed

> Nov 13 19:47:39 krabat kernel: [ 2661.120489] usb 9-7: USB disconnect, 
> address 3

Forced unbind

> ---------
> Afterwards the messages for the second drive where the same as for the 
> one I've posted.
> 
> This is reproducible, at least through starting the rsync. I will turn 
> on some debugging knobs and will see if I can see some more hints in the 
> resulting logs.

You can recompile with CONFIG_USB_DEBUG and CONFIG_USB_STORAGE_DEBUG.

	Regards
		Oliver
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