static bool optee_ffa_api_is_compatbile()

in optee/ffa_abi.c [637:670]

• 30 lines of code
• 6 McCabe index (conditional complexity)

static bool optee_ffa_api_is_compatbile(struct ffa_device *ffa_dev,
					const struct ffa_dev_ops *ops)
{
	struct ffa_send_direct_data data = { OPTEE_FFA_GET_API_VERSION };
	int rc;

	ops->mode_32bit_set(ffa_dev);

	rc = ops->sync_send_receive(ffa_dev, &data);
	if (rc) {
		pr_err("Unexpected error %d\n", rc);
		return false;
	}
	if (data.data0 != OPTEE_FFA_VERSION_MAJOR ||
	    data.data1 < OPTEE_FFA_VERSION_MINOR) {
		pr_err("Incompatible OP-TEE API version %lu.%lu",
		       data.data0, data.data1);
		return false;
	}

	data = (struct ffa_send_direct_data){ OPTEE_FFA_GET_OS_VERSION };
	rc = ops->sync_send_receive(ffa_dev, &data);
	if (rc) {
		pr_err("Unexpected error %d\n", rc);
		return false;
	}
	if (data.data2)
		pr_info("revision %lu.%lu (%08lx)",
			data.data0, data.data1, data.data2);
	else
		pr_info("revision %lu.%lu", data.data0, data.data1);

	return true;
}