linux-kernel - Re: 3.0rc3-rc5: usb stops working after resume from suspend to ram

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Date:	Mon, 4 Jul 2011 11:56:44 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Arkadiusz Miskiewicz <a.miskiewicz@...il.com>
cc:	Kernel development list <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>,
	Sarah Sharp <sarah.a.sharp@...ux.intel.com>
Subject: Re: 3.0rc3-rc5: usb stops working after resume from suspend to ram

On Mon, 4 Jul 2011, Arkadiusz Miskiewicz wrote:

> On Thursday 30 of June 2011, Alan Stern wrote:
> 
> > And now you know why, more or less -- we still have to figure out the
> > reason for the hang.  Probably something goes wrong when cdc-ether is
> > unbound from the wireless device.
> 
> Reverting patch below fixes hang.
> 
> commit fccf4e86200b8f5edd9a65da26f150e32ba79808
> Author: Sarah Sharp <sarah.a.sharp@...ux.intel.com>
> Date:   Sun Jun 5 23:22:22 2011 -0700
> 
>     USB: Free bandwidth when usb_disable_device is called.

Ah, very good!  That explains everything.  Someone else reported a 
similar problem that was tracked down to this commit, and I submitted a 
fix a few days ago:

	http://marc.info/?l=linux-usb&m=130955300211987&w=2

I bet this will fix your problem too.

Alan Stern

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