[PATCH] tpm: ibmvtpm: Call tpm2_sessions_init() to initialize session support

[Linux regression tracking (Thorsten Leemhuis)]

[CCing the regression list]

On 20.06.24 00:34, Stefan Berger wrote:
> Jarkko,
>   are you ok with this patch?

Hmmm, hope I did not miss anythng, but looks like nothing happened for
about 10 days here. Hence:

Jarkko, looks like some feedback from your side really would help to
find a path to get this regression resolved before 6.10 is released.

Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat)
--
Everything you wanna know about Linux kernel regression tracking:
https://linux-regtracking.leemhuis.info/about/#tldr
If I did something stupid, please tell me, as explained on that page.

#regzbot poke

> On 6/17/24 15:34, Stefan Berger wrote:
>> Fix the following type of error message caused by a missing call to
>> tpm2_sessions_init() in the IBM vTPM driver:
>>
>> [    2.987131] tpm tpm0: tpm2_load_context: failed with a TPM error
>> 0x01C4
>> [    2.987140] ima: Error Communicating to TPM chip, result: -14
>>
>> Fixes: d2add27cf2b8 ("tpm: Add NULL primary creation")
>> Signed-off-by: Stefan Berger <stefanb at linux.ibm.com>
>> ---
>>   drivers/char/tpm/tpm_ibmvtpm.c | 4 ++++
>>   1 file changed, 4 insertions(+)
>>
>> diff --git a/drivers/char/tpm/tpm_ibmvtpm.c
>> b/drivers/char/tpm/tpm_ibmvtpm.c
>> index d3989b257f42..1e5b107d1f3b 100644
>> --- a/drivers/char/tpm/tpm_ibmvtpm.c
>> +++ b/drivers/char/tpm/tpm_ibmvtpm.c
>> @@ -698,6 +698,10 @@ static int tpm_ibmvtpm_probe(struct vio_dev
>> *vio_dev,
>>           rc = tpm2_get_cc_attrs_tbl(chip);
>>           if (rc)
>>               goto init_irq_cleanup;
>> +
>> +        rc = tpm2_sessions_init(chip);
>> +        if (rc)
>> +            goto init_irq_cleanup;
>>       }
>>         return tpm_chip_register(chip);