Another trivial comment.  But if there is an incremental patch, maybe
consider to include it.

On Thu, Mar 15, 2012 at 11:11:19PM -0700, Mike Turquette wrote:
...

+#ifdef CONFIG_COMMON_CLK_DISABLE_UNUSED
+static int clk_disable_unused(void)
+{
+	struct clk *clk;
+	struct hlist_node *tmp;
+
+	mutex_lock(&prepare_lock);
+
+	hlist_for_each_entry(clk, tmp, &clk_root_list, child_node)
+		clk_disable_unused_subtree(clk);
+
+	hlist_for_each_entry(clk, tmp, &clk_orphan_list, child_node)
+		clk_disable_unused_subtree(clk);
+
+	mutex_unlock(&prepare_lock);
+
+	return 0;
+}
+late_initcall(clk_disable_unused);
+#else
+static inline int clk_disable_unused(struct clk *clk) { return 0; }

This #else block seems completely unnecessary to me.

+#endif /* CONFIG_COMMON_CLK_DISABLE_UNUSED */

-- 
Regards,
Shawn