linux-kernel - Re: [usb resume regression] in 3.16-rc1

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Message-ID: <Pine.LNX.4.44L0.1406201056270.1160-100000@iolanthe.rowland.org>
Date:	Fri, 20 Jun 2014 10:57:55 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Jörg Otte <jrg.otte@...il.com>
cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	USB list <linux-usb@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [usb resume regression] in 3.16-rc1

On Fri, 20 Jun 2014, Jörg Otte wrote:

> 2014-06-19 19:35 GMT+02:00 Alan Stern <stern@...land.harvard.edu>:
> > On Thu, 19 Jun 2014, Jörg Otte wrote:
> >
> >> I don't know how to do this.
> >
> > To enable dynamic debugging (as root):
> >
> >     echo 'module usbcore =p' >/sys/kernel/debug/dynamic_debug/control
> >     echo 'module ehci_hcd =p' >/sys/kernel/debug/dynamic_debug/control
> >
> > Do this before you carry out the suspend, and post the resulting dmesg
> > log.
> >
> > Alan Stern
> >
> here it is.

Now I see the reason for the regression.  There already is a patch to 
fix it:

	http://marc.info/?l=linux-usb&m=140304702623966&w=2

The fix will probably be included in 3.16-rc2 or -rc3.

Alan Stern

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