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

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Message-ID: <Pine.LNX.4.44L0.1107050956260.2060-100000@iolanthe.rowland.org>
Date:	Tue, 5 Jul 2011 09:57:48 -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 Tue, 5 Jul 2011, Arkadiusz Miskiewicz wrote:

> > 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.
> 
> Unfortunately it doesn't fix my problem (rc6 + that patch).
> 
> usb still hangs after resume and repluging device causes no effect.

When this hang occurs, can you get a stack dump?  Alt-SysRq-W or
something similar.  I'm particularly curious to see what the khubd
thread is doing.

Alan Stern

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