clk: add terminate callback to clk_ops

Add a terminate callback to the clk_ops to release the resources claimed in .init()

Jerome Brunet committed 7 years ago

Commit f8737441 parent 89d079d2 files · +9 −1Browse files

Unified · Split

2 files

 void clk_unregister(struct clk *clk)
 {
 	unsigned long flags;
+	const struct clk_ops *ops;
 	if (!clk || WARN_ON_ONCE(IS_ERR(clk)))
 		return;
 	clk_prepare_lock();
-	if (clk->core->ops == &clk_nodrv_ops) {
+	ops = clk->core->ops;
+	if (ops == &clk_nodrv_ops) {
 		pr_err("%s: unregistered clock: %s\n", __func__,
 		       clk->core->name);
 		goto unlock;
 	clk->core->ops = &clk_nodrv_ops;
 	clk_enable_unlock(flags);
+	if (ops->terminate)
+		ops->terminate(clk->core->hw);
 	if (!hlist_empty(&clk->core->children)) {
 		struct clk_core *child;
 		struct hlist_node *t;

  *		such as rate or parents.
  *		Returns 0 on success, -EERROR otherwise.
  *
+ * @terminate:  Free any resource allocated by init.
+ *
  * @debug_init:	Set up type-specific debugfs entries for this clock.  This
  *		is called once, after the debugfs directory entry for this
  *		clock has been created.  The dentry pointer representing that
 	int		(*set_duty_cycle)(struct clk_hw *hw,
 					  struct clk_duty *duty);
 	int		(*init)(struct clk_hw *hw);
+	void		(*terminate)(struct clk_hw *hw);
 	void		(*debug_init)(struct clk_hw *hw, struct dentry *dentry);
 };

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