From: Oliver Neukum <oliver@neukum.org>
To: Andreas Mohr <andi@lisas.de>
Cc: Alan Stern <stern@rowland.harvard.edu>,
"Greg Kroah-Hartman" <gregkh@suse.de>,
laurent.pinchart@skynet.be, Matthew Garrett <mjg59@srcf.ucam.org>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: usb autosuspend is history after S2R (also on 2.6.31; UVC?)
Date: Tue, 15 Sep 2009 21:48:28 +0200 [thread overview]
Message-ID: <200909152148.29662.oliver@neukum.org> (raw)
In-Reply-To: <20090915185145.GA31490@rhlx01.hs-esslingen.de>
Am Dienstag, 15. September 2009 20:51:45 schrieb Andreas Mohr:
> So, does the uvc driver need a bit of handholding here?
> It likely shouldn't simply forget about its autosuspend status after
> resume...
Can you please provide what you get when you read the "level" file
of the device's power directory?
Secondly, please verify, that it works before the STR cycle and post
a syslog of a suspend/resume cycle with CONFIG_USB_DEBUG and
only this device attached if possible. Thirdly, please verify that only
uvc is affected.
> Or would Matthew's uvc autosuspend patch
> http://osdir.com/ml/fedora-extras-commits/2009-07/msg06079.html
> help here?
Please test it. It shouldn't work, but if it works there's a fundamental
flaw.
Regards
Oliver
next prev parent reply other threads:[~2009-09-15 19:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-15 18:51 usb autosuspend is history after S2R (also on 2.6.31; UVC?) Andreas Mohr
2009-09-15 19:00 ` Greg KH
2009-09-15 19:10 ` Matthew Garrett
2009-09-15 19:48 ` Oliver Neukum [this message]
2009-09-16 18:19 ` Andreas Mohr
2009-09-16 19:51 ` Francois Romieu
2009-09-16 19:54 ` Andreas Mohr
2009-09-16 20:43 ` Francois Romieu
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