[    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 <ap...@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.

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