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From: Stefan Seyfried <stefan.seyfried@googlemail.com>
To: linux-kernel@vger.kernel.org
Subject: 3.0-rc2: mei breaks suspend
Date: Thu, 16 Jun 2011 11:02:56 +0200	[thread overview]
Message-ID: <20110616110256.0890dd37@susi.home.s3e.de> (raw)

Hi,

having the "mei" driver loaded, which happened automatically on my
ThinkPad X200s, successfully prevents any suspend efforts:

[39736.728116] pci_pm_suspend(): mei_pci_suspend+0x0/0xc0 [mei] returns 9999

The code has not changed since 3.0-rc2, so I did not try compiling latest
git.

Jiri Slaby hinted that this code in drivers/staging/mei/wd.c is to blame:

169         ret = wait_event_interruptible_timeout(dev->wait_stop_wd,
170                                         dev->wd_stopped, 10 * HZ);

I am, however, not familiar enough with timers and stuff to immediately
spot the problem.

Removing the module before suspend is a workaround.

This could be considered a regression, as suspend worked very well before
this driver was introduced :-)

Best regards,

	Stefan
-- 
Stefan Seyfried

Linux Consultant & Developer
B1 Systems GmbH
Osterfeldstraße 7 / 85088 Vohburg / http://www.b1-systems.de
GF: Ralph Dehner / Unternehmenssitz: Vohburg / AG: Ingolstadt,HRB 3537

             reply	other threads:[~2011-06-16  9:03 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-06-16  9:02 Stefan Seyfried [this message]
2011-06-16  9:19 ` Maarten Lankhorst
2011-06-16  9:38   ` Maarten Lankhorst
2011-06-16 10:24 ` Arkadiusz Miskiewicz
2011-06-16 14:27   ` Stefan Seyfried

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