[ Upstream commit673c7aa243] Prior to this patch optee_open_session() was making assumptions about the internal format of uuid_t by casting a memory location in a parameter struct to uuid_t *. Fix this using export_uuid() to get a well defined binary representation and also add an octets field in struct optee_msg_param in order to avoid casting. Fixes:c5b4312bea("tee: optee: Add support for session login client UUID generation") Suggested-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org> Signed-off-by: Sasha Levin <sashal@kernel.org>