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authorDaniel Walker <dwalker@mvista.com>2008-05-03 06:34:01 +1000
committerPaul Mackerras <paulus@samba.org>2008-05-05 16:47:13 +1000
commit0885cb5653ff82c8d322df1b8a95843dc5f5486b (patch)
tree3f92f533b28696e4c0f1e2e1037cbfc3005c7bc2
parentf74d505b58d36ceeef10e459094f0eb760681165 (diff)
[POWERPC] macintosh: therm_pm72: driver_lock semaphore to mutex
Signed-off-by: Daniel Walker <dwalker@mvista.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
-rw-r--r--drivers/macintosh/therm_pm72.c31
1 files changed, 16 insertions, 15 deletions
diff --git a/drivers/macintosh/therm_pm72.c b/drivers/macintosh/therm_pm72.c
index 1e0a69a5e81..ddfb426a9ab 100644
--- a/drivers/macintosh/therm_pm72.c
+++ b/drivers/macintosh/therm_pm72.c
@@ -122,6 +122,7 @@
#include <linux/kmod.h>
#include <linux/i2c.h>
#include <linux/kthread.h>
+#include <linux/mutex.h>
#include <asm/prom.h>
#include <asm/machdep.h>
#include <asm/io.h>
@@ -169,7 +170,7 @@ static int rackmac;
static s32 dimm_output_clamp;
static int fcu_rpm_shift;
static int fcu_tickle_ticks;
-static DECLARE_MUTEX(driver_lock);
+static DEFINE_MUTEX(driver_lock);
/*
* We have 3 types of CPU PID control. One is "split" old style control
@@ -729,9 +730,9 @@ static void fetch_cpu_pumps_minmax(void)
static ssize_t show_##name(struct device *dev, struct device_attribute *attr, char *buf) \
{ \
ssize_t r; \
- down(&driver_lock); \
+ mutex_lock(&driver_lock); \
r = sprintf(buf, "%d.%03d", FIX32TOPRINT(data)); \
- up(&driver_lock); \
+ mutex_unlock(&driver_lock); \
return r; \
}
#define BUILD_SHOW_FUNC_INT(name, data) \
@@ -1803,11 +1804,11 @@ static int main_control_loop(void *x)
{
DBG("main_control_loop started\n");
- down(&driver_lock);
+ mutex_lock(&driver_lock);
if (start_fcu() < 0) {
printk(KERN_ERR "kfand: failed to start FCU\n");
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
goto out;
}
@@ -1822,14 +1823,14 @@ static int main_control_loop(void *x)
fcu_tickle_ticks = FCU_TICKLE_TICKS;
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
while (state == state_attached) {
unsigned long elapsed, start;
start = jiffies;
- down(&driver_lock);
+ mutex_lock(&driver_lock);
/* Tickle the FCU just in case */
if (--fcu_tickle_ticks < 0) {
@@ -1861,7 +1862,7 @@ static int main_control_loop(void *x)
do_monitor_slots(&slots_state);
else
do_monitor_drives(&drives_state);
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
if (critical_state == 1) {
printk(KERN_WARNING "Temperature control detected a critical condition\n");
@@ -2019,13 +2020,13 @@ static void detach_fcu(void)
*/
static int therm_pm72_attach(struct i2c_adapter *adapter)
{
- down(&driver_lock);
+ mutex_lock(&driver_lock);
/* Check state */
if (state == state_detached)
state = state_attaching;
if (state != state_attaching) {
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
return 0;
}
@@ -2054,7 +2055,7 @@ static int therm_pm72_attach(struct i2c_adapter *adapter)
state = state_attached;
start_control_loops();
}
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
return 0;
}
@@ -2065,16 +2066,16 @@ static int therm_pm72_attach(struct i2c_adapter *adapter)
*/
static int therm_pm72_detach(struct i2c_adapter *adapter)
{
- down(&driver_lock);
+ mutex_lock(&driver_lock);
if (state != state_detached)
state = state_detaching;
/* Stop control loops if any */
DBG("stopping control loops\n");
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
stop_control_loops();
- down(&driver_lock);
+ mutex_lock(&driver_lock);
if (u3_0 != NULL && !strcmp(adapter->name, "u3 0")) {
DBG("lost U3-0, disposing control loops\n");
@@ -2090,7 +2091,7 @@ static int therm_pm72_detach(struct i2c_adapter *adapter)
if (u3_0 == NULL && u3_1 == NULL)
state = state_detached;
- up(&driver_lock);
+ mutex_unlock(&driver_lock);
return 0;
}