Commit 56783c5e authored by Daniel Walker's avatar Daniel Walker Committed by Paul Mackerras

[POWERPC] macintosh: windfarm_smu_sat: semaphore to mutex

Signed-off-by: default avatarDaniel Walker <dwalker@mvista.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Acked-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: default avatarPaul Mackerras <paulus@samba.org>
parent 0885cb56
......@@ -13,7 +13,7 @@
#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>
......@@ -36,7 +36,7 @@
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;
......@@ -163,7 +163,7 @@ static int wf_sat_get(struct wf_sensor *sr, s32 *value)
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)
......@@ -182,7 +182,7 @@ static int wf_sat_get(struct wf_sensor *sr, s32 *value)
err = 0;
fail:
up(&sat->mutex);
mutex_unlock(&sat->mutex);
return err;
}
......@@ -233,7 +233,7 @@ static void wf_sat_create(struct i2c_adapter *adapter, struct device_node *dev)
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;
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment