[PATCH] sh: enable and disable clocks recursively

[Magnus Damm <magnus.damm@gmail.com>]

From: Magnus Damm <damm@igel.co.jp>

Recurse and make sure parent clocks get enabled/disabled.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
---

 arch/sh/kernel/cpu/clock.c |   10 ++++++++++
 1 file changed, 10 insertions(+)

--- 0001/arch/sh/kernel/cpu/clock.c
+++ work/arch/sh/kernel/cpu/clock.c	2008-10-31 17:28:18.000000000 +0900
@@ -117,6 +117,11 @@ int clk_enable(struct clk *clk)
 	unsigned long flags;
 	int ret;
 
+	if (!clk)
+		return -EINVAL;
+
+	clk_enable(clk->parent);
+
 	spin_lock_irqsave(&clock_lock, flags);
 	ret = __clk_enable(clk);
 	spin_unlock_irqrestore(&clock_lock, flags);
@@ -147,9 +152,14 @@ void clk_disable(struct clk *clk)
 {
 	unsigned long flags;
 
+	if (!clk)
+		return -EINVAL;
+
 	spin_lock_irqsave(&clock_lock, flags);
 	__clk_disable(clk);
 	spin_unlock_irqrestore(&clock_lock, flags);
+
+	clk_disable(clk->parent);
 }
 EXPORT_SYMBOL_GPL(clk_disable);