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authorMatthias Kaehlcke <matthias.kaehlcke@gmail.com>2007-10-24 14:59:09 +0200
committerMark M. Hoffman <mhoffman@lightlink.com>2007-11-08 08:42:46 -0500
commit4bfe66048e97d29ab229519e9a821dbd4d929bd9 (patch)
tree895466bc1b959880d6e642a1abae3db290e73de7 /drivers/hwmon/lm70.c
parent8de577095d65e8a51135793bf48c7be6c6c5bc77 (diff)
downloadop-kernel-dev-4bfe66048e97d29ab229519e9a821dbd4d929bd9.zip
op-kernel-dev-4bfe66048e97d29ab229519e9a821dbd4d929bd9.tar.gz
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>
Diffstat (limited to 'drivers/hwmon/lm70.c')
-rw-r--r--drivers/hwmon/lm70.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/hwmon/lm70.c b/drivers/hwmon/lm70.c
index dd36688..d435f00 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);
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