Function rt_clk_unregister

components/drivers/clk/clk.c:280–309

* @brief Unregister clock node from clock list * * @param clk_np point to child node that will be Unregistered node. * * @retval RT_EOK * @retval -RT_EBUSY * @retval -RT_EINVAL */

 * @retval  -RT_EINVAL
 */
rt_err_t rt_clk_unregister(struct rt_clk_node *clk_np)
{
    rt_err_t err = RT_EOK;

    if (clk_np)
    {
        err = -RT_EBUSY;

        rt_hw_spin_lock(&_clk_lock.lock);

        if (rt_list_isempty(&clk_np->children_nodes))
        {
            if (rt_ref_read(&clk_np->ref) <= 1)
            {
                rt_list_remove(&clk_np->list);
                clk_free(clk_np->clk);

                err = RT_EOK;
            }
        }

        rt_hw_spin_unlock(&_clk_lock.lock);
    }
    else
    {
        err = -RT_EINVAL;
    }

    return err;
}

/**
 * @brief   Register clock notifier into notifier list