RTCAN 驱动模块到RTDM 中

1 .rtCAN 驱动模块到RTDM 中

int __init rtcan_init(void)
{
   
    int err = 0;

    if (!realtime_core_enabled())
	    return 0;

    printk("RT-Socket-CAN %d.%d.%d - %s\n",
	   RTCAN_MAJOR_VER, RTCAN_MINOR_VER, RTCAN_BUGFIX_VER,
	   rtcan_rtdm_provider_name);

    if ((err = rtcan_raw_proto_register()) != 0)
	goto out;

#ifdef CONFIG_PROC_FS
    if ((err = rtcan_proc_register()) != 0)
	goto out;
#endif

 out:
    return err;
}

module_init(rtcan_init);

rtcan_init()->rtcan_raw_proto_register()
其中 rtcan_raw_proto_register()

int __init rtcan_raw_proto_register(void)
{
   
    return rtdm_dev_register(&rtcan_device);
}

rtcan_init()->rtcan_raw_proto_register()->rtdm_dev_register(&rtcan_device)
rtdm_dev_register(&rtcan_device)
注册RTDM设备

/**
 * @brief Register a RTDM device
 *
 * Registers a device in the RTDM namespace.
 *
 * @param[in] dev Device descriptor.
 *
 * @return 0 is returned upon success. Otherwise:
 *
 * - -EINVAL is returned if the descriptor contains invalid
 * entries. RTDM_PROFILE_INFO() must appear in the list of
 * initializers for the driver properties.
 *
 * - -EEXIST is returned if the specified device name of protocol ID is
 * already in use.
 *
 * - -ENOMEM is returned if a memory allocation failed in the process
 * of registering the device.
 *
 * - -EAGAIN is returned if no registry slot is available (check/raise
 * CONFIG_XENO_OPT_REGISTRY_NRSLOTS).
 *
 * @coretags{secondary-only}
 */
int rtdm_dev_register(struct rtdm_device *dev)
{
   
	struct class *kdev_class = rtdm_class;
	struct device *kdev = NULL;
	struct rtdm_driver *drv;
	int ret, major, minor;
	xnkey_t id;
	dev_t rdev;

	secondary_mode_only();

	if (!realtime_core_enabled())
		return -ENOSYS;

	mutex_lock(&register_lock);

	dev->name = NULL;
	drv = dev->driver;
	ret = reg