diff options
| author | Minho Ban <mhban@samsung.com> | 2012-01-20 11:03:07 +0900 |
|---|---|---|
| committer | Kukjin Kim <kgene.kim@samsung.com> | 2012-02-12 01:03:02 +0900 |
| commit | 0cdf3affd3ddf4ff1a88e32b89bc629d569793f3 (patch) | |
| tree | 1d67f49bb9fbb3fb7edcb3ed6f539dd0e5ddcefc /arch/arm | |
| parent | 8942ad89a059f9854ddf7223ca6e32869d7d9059 (diff) | |
| download | linux-0cdf3affd3ddf4ff1a88e32b89bc629d569793f3.tar.bz2 | |
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: Minho Ban <mhban@samsung.com>
Signed-off-by: Jaecheol Lee <jc.lee@samsung.com>
Signed-off-by: Sunyoung Kang <sy0816.kang@samsung.com>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/plat-samsung/clock.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/arm/plat-samsung/clock.c b/arch/arm/plat-samsung/clock.c index 10f71179071f..65c5eca475e7 100644 --- a/arch/arm/plat-samsung/clock.c +++ b/arch/arm/plat-samsung/clock.c @@ -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); } |