Re: [PATCH] tpm_tis: Add missing start/stop_tpm_chip calls

[Tj (Elloe Linux)]

On 26/01/2021 16:46, James Bottomley wrote:
> On Tue, 2021-01-26 at 16:46 +0100, Łukasz Majczak wrote:
>> Hi Jarkko, Guenter
>>
>> Yes, here are the logs when failure occurs -
>> https://gist.github.com/semihalf-majczak-lukasz/1575461f585f1e7fb1e9366b8eceaab9
>> Look for a phrase "TPM returned invalid status"
> 
> We've had other reports of this:
> 
> https://lore.kernel.org/linux-integrity/ghsgagsnag.fsf@xxxxxxxxxxx/
> https://lore.kernel.org/linux-integrity/374e918c-f167-9308-2bea-ae6bc6a3d2e3@elloe.vision/
> 
> The problem is some TIS TPMs don't begin in the correct locality so we
> have to set it.  When I proposed the check, I also proposed a fix for
> this problem:
> 
> https://lore.kernel.org/linux-integrity/20201001180925.13808-5-James.Bottomley@xxxxxxxxxxxxxxxxxxxxx/
> 
This patch solves the error messages on top of -rc5

> But it's part of a series that never went upstream.  Part of the reason
> was Jarkko proposed the get/put patch to fix this instead, but that
> never went upstream either.  We need to decide an approach and apply
> one or other fixes.
> 
> James
> 
>