Add a missing structure field description.

Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
---
 drivers/firmware/arm_scmi/optee.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/firmware/arm_scmi/optee.c b/drivers/firmware/arm_scmi/optee.c
index 8abace56b958..f42dad997ac9 100644
--- a/drivers/firmware/arm_scmi/optee.c
+++ b/drivers/firmware/arm_scmi/optee.c
@@ -106,6 +106,7 @@ enum scmi_optee_pta_cmd {
  * @channel_id: OP-TEE channel ID used for this transport
  * @tee_session: TEE session identifier
  * @caps: OP-TEE SCMI channel capabilities
+ * @rx_len: Response size
  * @mu: Mutex protection on channel access
  * @cinfo: SCMI channel information
  * @shmem: Virtual base address of the shared memory
-- 
2.32.0