Function rt_bus_remove_device

components/drivers/core/bus.c:339–375

* @brief This function remove a device from bus * * @param dev the device to be removed * * @return the error code, RT_EOK on added successfully. */

 *  @return the error code, RT_EOK on added successfully.
 */
rt_err_t rt_bus_remove_device(rt_device_t dev)
{
    rt_bus_t bus;
    rt_driver_t drv;
    rt_err_t err = RT_EOK;

    RT_ASSERT(dev != RT_NULL);
    RT_ASSERT(dev->bus != RT_NULL);

    bus = dev->bus;
    drv = dev->drv;

    LOG_D("Bus(%s) remove device %s", bus->name, dev->parent.name);

    _dm_bus_lock(&bus->dev_lock);
    rt_list_remove(&dev->node);
    _dm_bus_unlock(&bus->dev_lock);

    if (dev->bus->remove)
    {
        err = dev->bus->remove(dev);
    }
    else if (drv)
    {
        if (drv->remove)
        {
            err = drv->remove(dev);
        }

        /* device and driver are in the same bus */
        _dm_bus_lock(&bus->drv_lock);
        --drv->ref_count;
        _dm_bus_unlock(&bus->drv_lock);
    }

    return err;
}

struct bus_shutdown_info
{