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-rw-r--r--arch/arm/mach-versatile/clock.c15
1 files changed, 8 insertions, 7 deletions
diff --git a/arch/arm/mach-versatile/clock.c b/arch/arm/mach-versatile/clock.c
index dcf10014f5cd..9858c96560e2 100644
--- a/arch/arm/mach-versatile/clock.c
+++ b/arch/arm/mach-versatile/clock.c
@@ -15,6 +15,7 @@
15#include <linux/err.h> 15#include <linux/err.h>
16#include <linux/string.h> 16#include <linux/string.h>
17#include <linux/clk.h> 17#include <linux/clk.h>
18#include <linux/mutex.h>
18 19
19#include <asm/semaphore.h> 20#include <asm/semaphore.h>
20#include <asm/hardware/icst307.h> 21#include <asm/hardware/icst307.h>
@@ -22,20 +23,20 @@
22#include "clock.h" 23#include "clock.h"
23 24
24static LIST_HEAD(clocks); 25static LIST_HEAD(clocks);
25static DECLARE_MUTEX(clocks_sem); 26static DEFINE_MUTEX(clocks_mutex);
26 27
27struct clk *clk_get(struct device *dev, const char *id) 28struct clk *clk_get(struct device *dev, const char *id)
28{ 29{
29 struct clk *p, *clk = ERR_PTR(-ENOENT); 30 struct clk *p, *clk = ERR_PTR(-ENOENT);
30 31
31 down(&clocks_sem); 32 mutex_lock(&clocks_mutex);
32 list_for_each_entry(p, &clocks, node) { 33 list_for_each_entry(p, &clocks, node) {
33 if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) { 34 if (strcmp(id, p->name) == 0 && try_module_get(p->owner)) {
34 clk = p; 35 clk = p;
35 break; 36 break;
36 } 37 }
37 } 38 }
38 up(&clocks_sem); 39 mutex_unlock(&clocks_mutex);
39 40
40 return clk; 41 return clk;
41} 42}
@@ -110,18 +111,18 @@ static struct clk mmci_clk = {
110 111
111int clk_register(struct clk *clk) 112int clk_register(struct clk *clk)
112{ 113{
113 down(&clocks_sem); 114 mutex_lock(&clocks_mutex);
114 list_add(&clk->node, &clocks); 115 list_add(&clk->node, &clocks);
115 up(&clocks_sem); 116 mutex_unlock(&clocks_mutex);
116 return 0; 117 return 0;
117} 118}
118EXPORT_SYMBOL(clk_register); 119EXPORT_SYMBOL(clk_register);
119 120
120void clk_unregister(struct clk *clk) 121void clk_unregister(struct clk *clk)
121{ 122{
122 down(&clocks_sem); 123 mutex_lock(&clocks_mutex);
123 list_del(&clk->node); 124 list_del(&clk->node);
124 up(&clocks_sem); 125 mutex_unlock(&clocks_mutex);
125} 126}
126EXPORT_SYMBOL(clk_unregister); 127EXPORT_SYMBOL(clk_unregister);
127 128