linux-kernel - Re: [REGRESSION] tpm_tis on Lenovo T410 broken in 2.6.38-rc6

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Message-ID: <20110301214702.GB2959@thunk.org>
Date:	Tue, 1 Mar 2011 16:47:02 -0500
From:	Ted Ts'o <tytso@....edu>
To:	Rajiv Andrade <srajiv@...ux.vnet.ibm.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	James Morris <jmorris@...ei.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [REGRESSION] tpm_tis on Lenovo T410 broken in 2.6.38-rc6

On Tue, Mar 01, 2011 at 06:31:48PM -0300, Rajiv Andrade wrote:
> 
> Thanks for clarifying the context. Please add a
> 
> WARN_ON(duration<=0, "no duration for ordinal %x (duration_idx
> %d)", ordinal, duration_idx);

Data has been sent in another e-mail.

> as Linus suggested. Also please check if there's an IRQ assigned to the TPM on both scenarios:
> 
> cat /proc/interrupts | grep -i tpm

Unfortunately, I was off-line doing these tests (because I can't
connect to the company intranet :-P), so I did't see your e-mail.
I'll be able to reboot and collect this information later, but there's
Real Work I have to get done at this point....  I can tell you that in
my working configuration, both with 2.6.37 and with the latest Linus
tip with commit c4ff4b829e reverted, I have no interrupt assigned to
the TPM.

> and finally, before the revert, with the
> 9b29050f tpm_tis: Use timeouts returned from TPM
> commit applied:
> 
> cat /sys/devices/pnp0/00\:0*/timeouts

See above; I can get this information later, if it's really needed,
but unfortunately it's on the company laptop, and I have some real
work I need to get back to.  (I don't need network access while at
meetings, so I could run some tests before lunch; now the meetings are
done and I have to get back to coding.  :-)

						- Ted
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