linux-kernel - [REGRESSION] Suspend fails because of TPM modules

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Message-ID: <alpine.LNX.2.00.1011291554570.981@pobox.suse.cz>
Date:	Mon, 29 Nov 2010 16:00:47 +0100 (CET)
From:	Jiri Kosina <jkosina@...e.cz>
To:	Debora Velarde <debora@...ux.vnet.ibm.com>,
	Rajiv Andrade <srajiv@...ux.vnet.ibm.com>,
	Marcel Selhorst <m.selhorst@...rix.com>
Cc:	linux-kernel@...r.kernel.org, tpmdd-devel@...ts.sourceforge.net,
	"Rafael J. Wysocki" <rjw@...e.com>
Subject: [REGRESSION] Suspend fails because of TPM modules

Hi,

on my thinkpad x200s (and I have seen reports on different HW as well), 
suspend fails when TPM modules are loaded.

	tpm_tis 00:0a: tpm_transmit: tpm_send: error -5
	legacy_suspend(): pnp_bus_suspend+0x0/0xa0 returns -5
	PM: Device 00:0a failed to suspend: error -5
	PM: Some devices failed to suspend

Once tpm, tpm_bios, tpm_tis and tpm modules are unloaded, suspend/resume 
works.

This is a regression. It definitely worked on this very same hardware on 
2.6.34. Any kernel between .34 and .37 wasn't booted there, so I don't 
have any data of that kind.

I can try bisecting it, but if anyone sees immediately what the culprit 
might be, that'd be helpful.

Thanks,

-- 
Jiri Kosina
SUSE Labs, Novell Inc.
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