firmware: arm_scmi: optee: use optee system invocation

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Changes SCMI optee transport to call tee_client_system_session()
to request optee driver to provision an entry context in OP-TEE
for processing OP-TEE messages. This prevents possible deadlock
in case OP-TEE threads are all consumed while these may be waiting
for a clock or regulator to be enable which SCMI OP-TEE service which
requires a free thread context to execute.

Cc: Sudeep Holla <sudeep.holla@arm.com>
Cc: Cristian Marussi <cristian.marussi@arm.com>
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Reviewed-by: Sumit Garg <sumit.garg@linaro.org>
Signed-off-by: Etienne Carriere <etienne.carriere@foss.st.com>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>

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Etienne Carriere 2023-10-30 09:48:12 +01:00 • committed by Jens Wiklander

parent 45bc2c9b5b

commit 4b391c9c37

1 changed files with 4 additions and 0 deletions

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drivers/firmware/arm_scmi/optee.c

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