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sh: enable and disable clocks recursively

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Recurse and make sure parent clocks get enabled/disabled.

Signed-off-by: Magnus Damm <damm@igel.co.jp>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Magnus Damm
2008-10-31 20:13:32 +09:00
committed by Paul Mundt
parent 4a4a9be3eb
commit d12cfac146
1 changed files with 10 additions and 0 deletions
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10
arch/sh/kernel/cpu/clock.c
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@@ -117,6 +117,11 @@ int clk_enable(struct clk *clk)
unsigned long flags; unsigned long flags;
int ret; int ret;
if (!clk)
return -EINVAL;
clk_enable(clk->parent);
spin_lock_irqsave(&clock_lock, flags); spin_lock_irqsave(&clock_lock, flags);
ret = __clk_enable(clk); ret = __clk_enable(clk);
spin_unlock_irqrestore(&clock_lock, flags); spin_unlock_irqrestore(&clock_lock, flags);
@@ -147,9 +152,14 @@ void clk_disable(struct clk *clk)
{ {
unsigned long flags; unsigned long flags;
if (!clk)
return -EINVAL;
spin_lock_irqsave(&clock_lock, flags); spin_lock_irqsave(&clock_lock, flags);
__clk_disable(clk); __clk_disable(clk);
spin_unlock_irqrestore(&clock_lock, flags); spin_unlock_irqrestore(&clock_lock, flags);
clk_disable(clk->parent);
} }
EXPORT_SYMBOL_GPL(clk_disable); EXPORT_SYMBOL_GPL(clk_disable);