linux-kernel - Re: [BISECTED] Suspend regression in v2.6.31 with Lenovo 3000 v200

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Message-ID: <4C20EA74.6090109@pardus.org.tr>
Date:	Tue, 22 Jun 2010 19:53:08 +0300
From:	Ozan Çağlayan <ozan@...dus.org.tr>
To:	Alan Stern <stern@...land.harvard.edu>
CC:	linux-kernel@...r.kernel.org, gregkh@...e.de, rjw@...k.pl
Subject: Re: [BISECTED] Suspend regression in v2.6.31 with Lenovo 3000 v200

Alan Stern wrote:

> Okay, the bus is usb2, the device attached to port 5 is a USB camera, 
> and it uses the Ali m5602 driver.  I have seen similar reports before, 
> but they involved a webcam using the uvcvideo driver.
> 
> Anyway, the problem is that the camera sends a wakeup request, which
> causes the suspend to be aborted.  I can't imagine why a camera would
> want to send a wakeup request -- probably it's a bug in the firmware.
> You can work around it by manually (or in a udev script) disabling
> wakeup on the camera:
> 
> 	echo disabled >/sys/bus/usb/devices/2-5/power/wakeup
> 
> Or you can back-port the patch that fixed the problem, commit 
> 7aba8d014341341590ecb64050b7a026642a62eb (USB: don't enable remote 
> wakeup by default).
> 
> Alan Stern

Thank you very much for your help but it seems that core/hub.c in 2.6.31.13
doesn't even include device_set_wakeup_enable() call that the commit you've
mentioned removes. There are 2 calls in core/hcd.c and 1 in core/hcd-pci.c
which at a quick glance still exists in the current master.

Should I disable the the remote wakeup in somewhere else or does that commit
doesn't really fix the issue?

Regards,

Ozan Caglayan
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