linux-kernel - Re: -rc6: something (probably active usb bluetooth) blocks suspend

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Message-ID: <20091114111021.GA1378@ucw.cz>
Date:	Sat, 14 Nov 2009 12:10:21 +0100
From:	Pavel Machek <pavel@....cz>
To:	Oliver Neukum <oliver@...kum.org>
Cc:	Alan Stern <stern@...land.harvard.edu>,
	USB list <linux-usb@...r.kernel.org>,
	kernel list <linux-kernel@...r.kernel.org>,
	marcel@...tmann.org, linux-bluetooth@...r.kernel.org,
	"Rafael J. Wysocki" <rjw@...k.pl>
Subject: Re: -rc6: something (probably active usb bluetooth) blocks suspend

On Mon 2009-11-16 12:48:29, Oliver Neukum wrote:
> Am Montag, 16. November 2009 12:22:54 schrieb Pavel Machek:
> 
> Hi Pavle,

:-)

> first the obvious question. Does it work if you down the interface?
> (not by killswitch)

Well, I'm not sure how repeatable it is. It happens once in two tries
today.

> > usb 5-1: usb suspend
> > usb 5-1: usb auto-resume
> > uhci_hcd 0000:00:1d.3: port 1 portsc 0095,01
> > usb 5-1: finish resume
> > uhci_hcd 0000:00:1d.3: reserve dev 2 ep81-INT, period 1, phase 0, 23
> > us
> 
> Why is the device autoresumed here? Are you using autosuspend?
> This is odd, as the freezer should block the send path and remote
> wakeups should be deferred.

I believe I have it enabled in kconfig but not during runtime.

(Another problem is that I need to turn the kill switch on/off to get
my bt usb after resume. That used not be the case long time ago.)
								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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