linux-kernel - Re: Regression 3.0-rc5+ : khubd blocked

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Message-ID: <4E0DEAA8.9020704@tudelft.nl>
Date:	Fri, 01 Jul 2011 17:41:28 +0200
From:	Éric Piel <E.A.B.Piel@...elft.nl>
To:	Alan Stern <stern@...land.harvard.edu>
CC:	Sarah Sharp <sarah.a.sharp@...ux.intel.com>,
	Greg KH <gregkh@...e.de>, LKML <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: Regression 3.0-rc5+ : khubd blocked

Op 01-07-11 17:21, Alan Stern schreef:
> On Fri, 1 Jul 2011, Éric Piel wrote:
>
:
> It appears that this was caused by Sarah's commit
> fccf4e86200b8f5edd9a65da26f150e32ba79808 (USB: Free bandwidth when
> usb_disable_device is called).  usb_disconnect() grabs the
> bandwidth_mutex before calling usb_disable_device(), which calls down
> indirectly to usb_set_interface(), which tries to acquire the
> bandwidth_mutex.
>
> This patch should fix the problem.  Still, this whole area cries out
> for some serious rewriting.
>
Thanks Alan,

I was running the regression :-) I'll try the patch and confirm it works.

Éric
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