[PATCH v2 1/2] optee: fix tee out of memory failure seen during kexec reboot

[Allen Pais]

>>
>> [    0.368428] tee_bnxt_fw optee-clnt0: tee_shm_alloc failed
>> [    0.368461] tee_bnxt_fw: probe of optee-clnt0 failed with error -22
>>
>> tee_shm_release() is not invoked on dma shm buffer.
>>
>> Implement .shutdown() method to handle the release of the buffers
>> correctly.
>>
>> More info:
>> https://github.com/OP-TEE/optee_os/issues/3637
>>
>> Signed-off-by: Allen Pais <apais at linux.microsoft.com>
>> ---
>>   drivers/tee/optee/core.c | 20 ++++++++++++++++++++
>>   1 file changed, 20 insertions(+)
> 
> This looks good to me. Do you have a practical way of testing this on
> QEMU for instance?
> 

Jens,

   I could not reproduce nor create a setup using QEMU, I could only
do it on a real h/w.

   I have extensively tested the fix and I don't see any issues.

Thanks.