diff options
Diffstat (limited to 'arch/arm/mach-versatile/clock.c')
-rw-r--r-- | arch/arm/mach-versatile/clock.c | 15 |
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 | ||
24 | static LIST_HEAD(clocks); | 25 | static LIST_HEAD(clocks); |
25 | static DECLARE_MUTEX(clocks_sem); | 26 | static DEFINE_MUTEX(clocks_mutex); |
26 | 27 | ||
27 | struct clk *clk_get(struct device *dev, const char *id) | 28 | struct 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 | ||
111 | int clk_register(struct clk *clk) | 112 | int 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 | } |
118 | EXPORT_SYMBOL(clk_register); | 119 | EXPORT_SYMBOL(clk_register); |
119 | 120 | ||
120 | void clk_unregister(struct clk *clk) | 121 | void 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 | } |
126 | EXPORT_SYMBOL(clk_unregister); | 127 | EXPORT_SYMBOL(clk_unregister); |
127 | 128 | ||