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

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Message-Id: <200911161248.29924.oliver@neukum.org>
Date:	Mon, 16 Nov 2009 12:48:29 +0100
From:	Oliver Neukum <oliver@...kum.org>
To:	Pavel Machek <pavel@....cz>,
	Alan Stern <stern@...land.harvard.edu>,
	USB list <linux-usb@...r.kernel.org>
Cc:	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

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)

> 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.

	Regards
		Oliver
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