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[ARM] pxa: use mutexes instead of semaphores

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Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Russell King 2007-05-15 16:49:02 +01:00 committed by Russell King
parent f62c3f2c35
commit f4b6a0a401
1 changed files with 7 additions and 8 deletions
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15
arch/arm/mach-pxa/clock.c
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@ -12,7 +12,6 @@
#include <asm/arch/pxa-regs.h>
#include <asm/hardware.h>
#include <asm/semaphore.h>
struct clk {
struct list_head node;
@ -25,21 +24,21 @@ struct clk {
};
static LIST_HEAD(clocks);
static DECLARE_MUTEX(clocks_sem);
static DEFINE_MUTEX(clocks_mutex);
static DEFINE_SPINLOCK(clocks_lock);
struct clk *clk_get(struct device *dev, const char *id)
{
struct clk *p, *clk = ERR_PTR(-ENOENT);
down(&clocks_sem);
mutex_lock(&clocks_mutex);
list_for_each_entry(p, &clocks, node) {
if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
clk = p;
break;
}
}
up(&clocks_sem);
mutex_unlock(&clocks_mutex);
return clk;
}
@ -101,18 +100,18 @@ static struct clk clk_gpio27 = {
int clk_register(struct clk *clk)
{
down(&clocks_sem);
mutex_lock(&clocks_mutex);
list_add(&clk->node, &clocks);
up(&clocks_sem);
mutex_unlock(&clocks_mutex);
return 0;
}
EXPORT_SYMBOL(clk_register);
void clk_unregister(struct clk *clk)
{
down(&clocks_sem);
mutex_lock(&clocks_mutex);
list_del(&clk->node);
up(&clocks_sem);
mutex_unlock(&clocks_mutex);
}
EXPORT_SYMBOL(clk_unregister);