multiple rpmsg channels

[apankoke]

I'am trying to use 2 rpmsg channels. One to communicate with the Remote R5-proc (using zynqmp) in a generic way, the other to make a file I/O redirection. The redirection part is from the example.
these are the created rpmsg channels on linux side.

virtio_rpmsg_bus virtio0: creating channel rpmsg-tec-control-channel addr 0x0
virtio_rpmsg_bus virtio0: creating channel rpmsg-tec-fileio-channel addr 0x1

On the Remote side I've created 2 channels like this:

ret = rpmsg_create_ept(&app_ept, rdev, RPMSG_SERVICE_NAME,
                              0, RPMSG_ADDR_ANY, rpmsg_endpoint_cb,
			       rpmsg_service_unbind);
	if (ret)
	{
		LPERROR("Failed to create endpoint.\r\n");
		return -EINVAL;
	}
	LPRINTF("Successfully created endpoint.\r\n");

	/* redirect I/Os */
	LPRINTF("Try to initialize I/Os redirection...\r\n");
	ret = rpmsg_rpc_init(&rpc, rdev, RPMSG_SERVICE_NAME_2,
			RPMSG_ADDR_ANY, RPMSG_ADDR_ANY, priv,
				 platform_poll, rpmsg_rpc_shutdown);
	rpmsg_set_default_rpc(&rpc); 

On the Linux side i try to connect both channels. But I get always an error message on the kernel,
when try to open the second driver:

sprintf(ept_dev_path_file, "/dev/%s", ept_dev_name_file);
fdrp_msg_dev_file = open(ept_dev_path_file, O_RDWR | O_NONBLOCK);

Kernel Message:
rpmsg_chrdev virtio0.rpmsg-tec-control-channel.-1.0: idr_alloc failed: -28
rpmsg rpmsg1: failed to open rpmsg-tec-control-channel

Is the above "thing" even possible?
BR
Andreas