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Commit 0cdf3aff authored by Minho Ban's avatar Minho Ban Committed by Kukjin Kim
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ARM: SAMSUNG: use spin_lock_irqsave() in clk_{enable,disable} 



The clk_enable()and clk_disable() can be used process and ISR either.
And actually it is used for real product and other platforms use it
now. So spin_lock_irqsave() should be used instead.

Signed-off-by: default avatarMinho Ban <mhban@samsung.com>
Signed-off-by: default avatarJaecheol Lee <jc.lee@samsung.com>
Signed-off-by: default avatarSunyoung Kang <sy0816.kang@samsung.com>
Signed-off-by: default avatarKukjin Kim <kgene.kim@samsung.com>
parent 8942ad89

arch/arm/plat-samsung/clock.c

+8 −4
Original line number Diff line number Diff line
@@ -84,31 +84,35 @@ static int clk_null_enable(struct clk *clk, int enable) 


int clk_enable(struct clk *clk)

{

	unsigned long flags;



	if (IS_ERR(clk) || clk == NULL)

		return -EINVAL;



	clk_enable(clk->parent);



	spin_lock(&clocks_lock);

	spin_lock_irqsave(&clocks_lock, flags);



	if ((clk->usage++) == 0)

		(clk->enable)(clk, 1);



	spin_unlock(&clocks_lock);

	spin_unlock_irqrestore(&clocks_lock, flags);

	return 0;

}



void clk_disable(struct clk *clk)

{

	unsigned long flags;



	if (IS_ERR(clk) || clk == NULL)

		return;



	spin_lock(&clocks_lock);

	spin_lock_irqsave(&clocks_lock, flags);



	if ((--clk->usage) == 0)

		(clk->enable)(clk, 0);



	spin_unlock(&clocks_lock);

	spin_unlock_irqrestore(&clocks_lock, flags);

	clk_disable(clk->parent);

}