Merge branches 'clk-init-allocation', 'clk-unused' and 'clk-register-dt-node-better' into clk-next

 - Let clk_ops::init() return an error code
 - Add a clk_ops::terminate() callback to undo clk_ops::init()

* clk-init-allocation:
  clk: add terminate callback to clk_ops
  clk: let init callback return an error code
  clk: actually call the clock init before any other callback of the clock

* clk-unused:
  clk: bm1800: Remove set but not used variable 'fref'

* clk-register-dt-node-better:
  clk: Use parent node pointer during registration if necessary

drivers/clk/clk-bm1880.c

@@ -474,11 +474,10 @@ static struct bm1880_composite_clock bm1880_composite_clks[] = {
 static unsigned long bm1880_pll_rate_calc(u32 regval, unsigned long parent_rate)
 {
 	u64 numerator;
-	u32 fbdiv, fref, refdiv;
+	u32 fbdiv, refdiv;
 	u32 postdiv1, postdiv2, denominator;
 
 	fbdiv = (regval >> 16) & 0xfff;
-	fref = parent_rate;
 	refdiv = regval & 0x1f;
 	postdiv1 = (regval >> 8) & 0x7;
 	postdiv2 = (regval >> 12) & 0x7;

drivers/clk/clk.c

@@ -3728,6 +3728,28 @@ __clk_register(struct device *dev, struct device_node *np, struct clk_hw *hw)
 	return ERR_PTR(ret);
 }
 
+/**
+ * dev_or_parent_of_node() - Get device node of @dev or @dev's parent
+ * @dev: Device to get device node of
+ *
+ * Return: device node pointer of @dev, or the device node pointer of
+ * @dev->parent if dev doesn't have a device node, or NULL if neither
+ * @dev or @dev->parent have a device node.
+ */
+static struct device_node *dev_or_parent_of_node(struct device *dev)
+{
+	struct device_node *np;
+
+	if (!dev)
+		return NULL;
+
+	np = dev_of_node(dev);
+	if (!np)
+		np = dev_of_node(dev->parent);
+
+	return np;
+}
+
 /**
  * clk_register - allocate a new clock, register it and return an opaque cookie
  * @dev: device that is registering this clock
@@ -3743,7 +3765,7 @@ __clk_register(struct device *dev, struct device_node *np, struct clk_hw *hw)
  */
 struct clk *clk_register(struct device *dev, struct clk_hw *hw)
 {
-	return __clk_register(dev, dev_of_node(dev), hw);
+	return __clk_register(dev, dev_or_parent_of_node(dev), hw);
 }
 EXPORT_SYMBOL_GPL(clk_register);
 
@@ -3759,7 +3781,8 @@ EXPORT_SYMBOL_GPL(clk_register);
  */
 int clk_hw_register(struct device *dev, struct clk_hw *hw)
 {
-	return PTR_ERR_OR_ZERO(__clk_register(dev, dev_of_node(dev), hw));
+	return PTR_ERR_OR_ZERO(__clk_register(dev, dev_or_parent_of_node(dev),
+			       hw));
 }
 EXPORT_SYMBOL_GPL(clk_hw_register);