/*
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   */
  
  #include <linux/clk.h>
  #include <linux/device.h>
  #include <linux/export.h>
  #include <linux/gfp.h>
  
  static void devm_clk_release(struct device *dev, void *res)
  {
  	clk_put(*(struct clk **)res);
  }
  
  struct clk *devm_clk_get(struct device *dev, const char *id)
  {
  	struct clk **ptr, *clk;
  
  	ptr = devres_alloc(devm_clk_release, sizeof(*ptr), GFP_KERNEL);
  	if (!ptr)
  		return ERR_PTR(-ENOMEM);
  
  	clk = clk_get(dev, id);
  	if (!IS_ERR(clk)) {
  		*ptr = clk;
  		devres_add(dev, ptr);
  	} else {
  		devres_free(ptr);
  	}
  
  	return clk;
  }
  EXPORT_SYMBOL(devm_clk_get);
  
  static int devm_clk_match(struct device *dev, void *res, void *data)
  {
  	struct clk **c = res;
  	if (!c || !*c) {
  		WARN_ON(!c || !*c);
  		return 0;
  	}
  	return *c == data;
  }
  
  void devm_clk_put(struct device *dev, struct clk *clk)
  {
  	int ret;

  	ret = devres_release(dev, devm_clk_release, devm_clk_match, clk);

  
  	WARN_ON(ret);
  }
  EXPORT_SYMBOL(devm_clk_put);