lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[ARM] Convert some arm semaphores to mutexes

Browse Source 
The arm clock semaphores are strict mutexes, convert them to the new
mutex implementation

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
This commit is contained in:
Arjan van de Ven
2006-01-12 18:42:23 +00:00
committed by Russell King
parent f4619025a5
commit 00431707be
9 changed files with 67 additions and 58 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
arch/arm/mach-integrator/clock.c
View File

@@ -15,6 +15,7 @@
#include <linux/err.h>
#include <linux/string.h>
#include <linux/clk.h>
#include <linux/mutex.h>
#include <asm/semaphore.h>
#include <asm/hardware/icst525.h>
@@ -22,20 +23,20 @@
#include "clock.h"
static LIST_HEAD(clocks);
static DECLARE_MUTEX(clocks_sem);
static DEFINE_MUTEX(clocks_mutex);
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;
}
@@ -107,18 +108,18 @@ static struct clk uart_clk = {
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);