}
 }
 
-static struct tee_driver_ops optee_ops = {
+static const struct tee_driver_ops optee_ops = {
        .get_version = optee_get_version,
        .open = optee_open,
        .release = optee_release,
        .cancel_req = optee_cancel_req,
 };
 
-static struct tee_desc optee_desc = {
+static const struct tee_desc optee_desc = {
        .name = DRIVER_NAME "-clnt",
        .ops = &optee_ops,
        .owner = THIS_MODULE,
 };
 
-static struct tee_driver_ops optee_supp_ops = {
+static const struct tee_driver_ops optee_supp_ops = {
        .get_version = optee_get_version,
        .open = optee_open,
        .release = optee_release,
        .supp_send = optee_supp_send,
 };
 
-static struct tee_desc optee_supp_desc = {
+static const struct tee_desc optee_supp_desc = {
        .name = DRIVER_NAME "-supp",
        .ops = &optee_supp_ops,
        .owner = THIS_MODULE,