Function rpmsgdev_register

drivers/misc/rpmsgdev.c:1149–1220

 ****************************************************************************/

int rpmsgdev_register(FAR const char *remotecpu, FAR const char *remotepath,
                      FAR const char *localpath, uint32_t flags)
{
  FAR struct rpmsgdev_s *dev;
  int ret;

  /* Arguments check */

  if (remotecpu == NULL || remotepath == NULL)
    {
      return -EINVAL;
    }

  DEBUGASSERT(strlen(remotepath) + RPMSGDEV_NAME_PREFIX_LEN <=
              RPMSG_NAME_SIZE);

  dev = kmm_zalloc(sizeof(*dev));
  if (dev == NULL)
    {
      return -ENOMEM;
    }

  /* Initialize the rpmsg device */

  dev->remotecpu  = remotecpu;
  dev->remotepath = remotepath;
  dev->flags      = flags;

  nxsem_init(&dev->wait, 0, 0);

  /* Register the rpmsg callback */

  ret = rpmsg_register_callback(dev,
                                rpmsgdev_device_created,
                                rpmsgdev_device_destroy,
                                NULL,
                                NULL);
  if (ret < 0)
    {
      rpmsgdeverr("register callback failed, ret=%d\n", ret);
      goto fail;
    }

  /* Register driver, using the remotepath if localpath is NULL */

  if (localpath == NULL)
    {
      localpath = remotepath;
    }

  ret = register_driver(localpath, &g_rpmsgdev_ops, 0666, dev);
  if (ret < 0)
    {
      rpmsgdeverr("register driver failed, ret=%d\n", ret);
      goto fail_with_rpmsg;
    }

  return OK;