linux-kernel - Re: [PATCH v2] tpm_tis: Use timeouts returned from TPM

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Message-ID: <4D6904F9.7080604@gmail.com>
Date:	Sat, 26 Feb 2011 14:49:45 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	Stefan Berger <stefanb@...ux.vnet.ibm.com>
CC:	preining@...ic.at,
	Linux kernel mailing list <linux-kernel@...r.kernel.org>,
	Rajiv Andrade <srajiv@...ux.vnet.ibm.com>,
	"debora@...ux.vnet.ibm.com" <debora@...ux.vnet.ibm.com>
Subject: Re: [PATCH v2] tpm_tis: Use timeouts returned from TPM

On 02/26/2011 02:48 PM, Stefan Berger wrote:
> On 02/26/2011 06:45 AM, Jiri Slaby wrote:
>> On 02/22/2011 08:41 PM, Stefan Berger wrote:
>>> Below patch applies to the tip of the git tree.
>>>
>>> v2:
>>>    - adjusting all timeouts for TPM devices reporting too low timeout
>>> numbers
>>>    - also displaying in sysfs whether the timeouts are 'original' or
>>> 'adjusted'
>>>
>>> The current TPM TIS driver in git discards the timeout values returned
>>> from the TPM. The check of the response packet needs to consider that
>>> the return_code field is 0 on success and the size of the expected
>>> packet is equivalent to the header size + u32 length indicator for the
>>> TPM_GetCapability() result + 3 timeout indicators of type u32.
>>>
>>> Since some TPMs seem to return timeouts in msec rather than usec,
>>> I am now adjusting all the timeouts rather than just the one for short
>>> durations.
>>>
>>> I am also adding a sysfs entry 'timeouts' showing the timeouts that are
>>> being used.
>> It works:
> 'It' means also 'suspend' works?

Yes.

regards,
-- 
js
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