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From: "Ozan Çağlayan" <ozan@pardus.org.tr>
To: Alan Stern <stern@rowland.harvard.edu>
Cc: linux-kernel@vger.kernel.org, gregkh@suse.de, rjw@sisk.pl
Subject: Re: [BISECTED] Suspend regression in v2.6.31 with Lenovo 3000 v200
Date: Tue, 22 Jun 2010 19:53:08 +0300	[thread overview]
Message-ID: <4C20EA74.6090109@pardus.org.tr> (raw)
In-Reply-To: <Pine.LNX.4.44L0.1006221039530.1631-100000@iolanthe.rowland.org>

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

  reply	other threads:[~2010-06-22 16:53 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-06-21  7:22 [BISECTED] Suspend regression in v2.6.31 with Lenovo 3000 v200 Ozan Çağlayan
2010-06-21 10:31 ` Ozan Çağlayan
2010-06-21 16:25 ` Alan Stern
2010-06-22  9:09   ` Ozan Çağlayan
2010-06-22 14:49     ` Alan Stern
2010-06-22 16:53       ` Ozan Çağlayan [this message]
2010-06-22 17:47         ` Alan Stern
2010-06-24  7:01           ` Ozan Çağlayan
2010-06-24 14:10             ` Alan Stern
2010-06-24 15:40               ` Ozan Çağlayan

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