hwmon: (lm70) Convert semaphore to mutex

Signed-off-by: Matthias Kaehlcke <matthias.kaehlcke@gmail.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mark M. Hoffman <mhoffman@lightlink.com>

1 files changed, 6 insertions, 5 deletions

diff --git a/drivers/hwmon/lm70.c b/drivers/hwmon/lm70.c
index dd366889ce9b..d435f003292d 100644
--- a/drivers/hwmon/lm70.c
+++ b/drivers/hwmon/lm70.c
@@ -31,14 +31,15 @@
 #include <linux/err.h>
 #include <linux/sysfs.h>
 #include <linux/hwmon.h>
+#include <linux/mutex.h>
 #include <linux/spi/spi.h>
-#include <asm/semaphore.h>
+
 
 #define DRVNAME         "lm70"
 
 struct lm70 {
         struct device *hwmon_dev;
-        struct semaphore sem;
+        struct mutex lock;
 };
 
 /* sysfs hook function */
@@ -51,7 +52,7 @@ static ssize_t lm70_sense_temp(struct device *dev,
         s16 raw=0;
         struct lm70 *p_lm70 = dev_get_drvdata(&spi->dev);
 
-        if (down_interruptible(&p_lm70->sem))
+        if (mutex_lock_interruptible(&p_lm70->lock))
                 return -ERESTARTSYS;
 
         /*
@@ -83,7 +84,7 @@ static ssize_t lm70_sense_temp(struct device *dev,
         val = ((int)raw/32) * 250;
         status = sprintf(buf, "%d\n", val); /* millidegrees Celsius */
 out:
-        up(&p_lm70->sem);
+        mutex_unlock(&p_lm70->lock);
         return status;
 }
 
@@ -112,7 +113,7 @@ static int __devinit lm70_probe(struct spi_device *spi)
         if (!p_lm70)
                 return -ENOMEM;
 
-        init_MUTEX(&p_lm70->sem);
+        mutex_init(&p_lm70->lock);
 
         /* sysfs hook */
         p_lm70->hwmon_dev = hwmon_device_register(&spi->dev);