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path: root/drivers/hwmon/lm63.c
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Diffstat (limited to 'drivers/hwmon/lm63.c')
-rw-r--r--drivers/hwmon/lm63.c29
1 files changed, 15 insertions, 14 deletions
diff --git a/drivers/hwmon/lm63.c b/drivers/hwmon/lm63.c
index 6b1aa7ef552..071f0fc6ade 100644
--- a/drivers/hwmon/lm63.c
+++ b/drivers/hwmon/lm63.c
@@ -45,6 +45,7 @@
#include <linux/hwmon-sysfs.h>
#include <linux/hwmon.h>
#include <linux/err.h>
+#include <linux/mutex.h>
/*
* Addresses to scan
@@ -153,7 +154,7 @@ static struct i2c_driver lm63_driver = {
struct lm63_data {
struct i2c_client client;
struct class_device *class_dev;
- struct semaphore update_lock;
+ struct mutex update_lock;
char valid; /* zero until following fields are valid */
unsigned long last_updated; /* in jiffies */
@@ -192,13 +193,13 @@ static ssize_t set_fan(struct device *dev, struct device_attribute *dummy,
struct lm63_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->fan[1] = FAN_TO_REG(val);
i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_LSB,
data->fan[1] & 0xFF);
i2c_smbus_write_byte_data(client, LM63_REG_TACH_LIMIT_MSB,
data->fan[1] >> 8);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -222,12 +223,12 @@ static ssize_t set_pwm1(struct device *dev, struct device_attribute *dummy,
return -EPERM;
val = simple_strtoul(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->pwm1_value = val <= 0 ? 0 :
val >= 255 ? 2 * data->pwm1_freq :
(val * data->pwm1_freq * 2 + 127) / 255;
i2c_smbus_write_byte_data(client, LM63_REG_PWM_VALUE, data->pwm1_value);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -253,10 +254,10 @@ static ssize_t set_temp8(struct device *dev, struct device_attribute *dummy,
struct lm63_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp8[1] = TEMP8_TO_REG(val);
i2c_smbus_write_byte_data(client, LM63_REG_LOCAL_HIGH, data->temp8[1]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -284,13 +285,13 @@ static ssize_t set_temp11(struct device *dev, struct device_attribute *devattr,
long val = simple_strtol(buf, NULL, 10);
int nr = attr->index;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp11[nr] = TEMP11_TO_REG(val);
i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2],
data->temp11[nr] >> 8);
i2c_smbus_write_byte_data(client, reg[(nr - 1) * 2 + 1],
data->temp11[nr] & 0xff);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -314,11 +315,11 @@ static ssize_t set_temp2_crit_hyst(struct device *dev, struct device_attribute *
long val = simple_strtol(buf, NULL, 10);
long hyst;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
hyst = TEMP8_FROM_REG(data->temp8[2]) - val;
i2c_smbus_write_byte_data(client, LM63_REG_REMOTE_TCRIT_HYST,
HYST_TO_REG(hyst));
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -427,7 +428,7 @@ static int lm63_detect(struct i2c_adapter *adapter, int address, int kind)
strlcpy(new_client->name, "lm63", I2C_NAME_SIZE);
data->valid = 0;
- init_MUTEX(&data->update_lock);
+ mutex_init(&data->update_lock);
/* Tell the I2C layer a new client has arrived */
if ((err = i2c_attach_client(new_client)))
@@ -530,7 +531,7 @@ static struct lm63_data *lm63_update_device(struct device *dev)
struct i2c_client *client = to_i2c_client(dev);
struct lm63_data *data = i2c_get_clientdata(client);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ) || !data->valid) {
if (data->config & 0x04) { /* tachometer enabled */
@@ -582,7 +583,7 @@ static struct lm63_data *lm63_update_device(struct device *dev)
data->valid = 1;
}
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return data;
}