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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

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
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/