[PATCH] optee: add missing description of RPC argument reference

[Etienne Carriere]

Adds missing inline description comment for RPC optional arguments
reference.

Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/lkml/202310192021.fvb6JDOY-lkp@xxxxxxxxx/
Signed-off-by: Etienne Carriere <etienne.carriere@xxxxxxxxxxx>
---
 drivers/tee/optee/smc_abi.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/tee/optee/smc_abi.c b/drivers/tee/optee/smc_abi.c
index d5b28fd35d66..67bfa25d6302 100644
--- a/drivers/tee/optee/smc_abi.c
+++ b/drivers/tee/optee/smc_abi.c
@@ -806,6 +806,7 @@ static void handle_rpc_func_cmd(struct tee_context *ctx, struct optee *optee,
 /**
  * optee_handle_rpc() - handle RPC from secure world
  * @ctx:	context doing the RPC
+ * @rpc_arg:	pointer to RPC arguments if any, or NULL if none
  * @param:	value of registers for the RPC
  * @call_ctx:	call context. Preserved during one OP-TEE invocation
  *
-- 
2.25.1