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

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Message-ID: <4B21760F.1090206@ahsoftware.de>
Date:	Thu, 10 Dec 2009 23:28:31 +0100
From:	Alexander Holler <holler@...oftware.de>
To:	Alan Stern <stern@...land.harvard.edu>
CC:	Oliver Neukum <oliver@...kum.org>, linux-usb@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: Problems with p55-express and sleeping usb-hds

Am 18.11.2009 17:22, schrieb Alan Stern:

> You can unbind ehci-hcd from the controller by writing the controller's
> name to the "unbind" attribute in the appropriate sysfs directory.  For
> example, on my system:
>
> # ls /sys/bus/pci/drivers/ehci_hcd
> 0000:00:1d.7  0000:01:00.2  0000:01:01.2  bind  module  new_id  uevent
> unbind
> # echo -n 0000:00:1d.7>/sys/bus/pci/drivers/ehci_hcd/unbind
>
> Then to rebind the driver, write the device name to the "bind"
> attribute:
>
> # echo -n 0000:00:1d.7>/sys/bus/pci/drivers/ehci_hcd/bind

Thanks, that works nicely and takes away the need to reboot when using a 
stock F11 kernel and the problem occurs.

I've recently discovered that I can provoke the error too, when using dd 
on an usb-dvd writing the output to an usb-hdd. So the topic of this 
thread is now certainly wrong.

And because I'm still having the problem using Kernel 2.6.31.7 and 
2.6.32, I've written bug #14785. It's easier to attach long logs there.

Kind regards,

Alexander Holler
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