[POWERPC] macintosh: windfarm_smu_sat: semaphore to mutex

#include <linux/init.h>

#include <linux/wait.h>

#include <linux/i2c.h>

#include <linux/semaphore.h>

#include <linux/mutex.h>

#include <asm/prom.h>

#include <asm/smu.h>

#include <asm/pmac_low_i2c.h>

struct wf_sat {

	int			nr;

	atomic_t		refcnt;

	struct semaphore	mutex;

	struct mutex		mutex;

	unsigned long		last_read; /* jiffies when cache last updated */

	u8			cache[16];

	struct i2c_client	i2c;

	if (sat->i2c.adapter == NULL)

		return -ENODEV;

	down(&sat->mutex);

	mutex_lock(&sat->mutex);

	if (time_after(jiffies, (sat->last_read + MAX_AGE))) {

		err = wf_sat_read_cache(sat);

		if (err)

	err = 0;

 fail:

	up(&sat->mutex);

	mutex_unlock(&sat->mutex);

	return err;

}

	sat->nr = -1;

	sat->node = of_node_get(dev);

	atomic_set(&sat->refcnt, 0);

	init_MUTEX(&sat->mutex);

	mutex_init(&sat->mutex);

	sat->i2c.addr = (addr >> 1) & 0x7f;

	sat->i2c.adapter = adapter;

	sat->i2c.driver = &wf_sat_driver;