Re: 3.0-rc2: mei breaks suspend

From: Maarten Lankhorst
Date: Thu Jun 16 2011 - 05:38:48 EST

2011/6/16 Maarten Lankhorst <m.b.lankhorst@xxxxxxxxx>:
> Hi Stefan,
> 2011/6/16 Stefan Seyfried <stefan.seyfried@xxxxxxxxxxxxxx>:
>> 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 Â Â Â Â ret = wait_event_interruptible_timeout(dev->wait_stop_wd,
>> 170 Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 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 :-)
Nm, stupid suggestion.

Adding the author to cc, maybe he knows.
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