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path: root/drivers/hwmon/adm1031.c
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Diffstat (limited to 'drivers/hwmon/adm1031.c')
-rw-r--r--drivers/hwmon/adm1031.c49
1 files changed, 25 insertions, 24 deletions
diff --git a/drivers/hwmon/adm1031.c b/drivers/hwmon/adm1031.c
index d06397966081..3bf2da621aed 100644
--- a/drivers/hwmon/adm1031.c
+++ b/drivers/hwmon/adm1031.c
@@ -28,6 +28,7 @@
#include <linux/i2c.h>
#include <linux/hwmon.h>
#include <linux/err.h>
+#include <linux/mutex.h>
/* Following macros takes channel parameter starting from 0 to 2 */
#define ADM1031_REG_FAN_SPEED(nr) (0x08 + (nr))
@@ -70,7 +71,7 @@ typedef u8 auto_chan_table_t[8][2];
struct adm1031_data {
struct i2c_client client;
struct class_device *class_dev;
- struct semaphore update_lock;
+ struct mutex update_lock;
int chip_type;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
@@ -262,10 +263,10 @@ set_fan_auto_channel(struct device *dev, const char *buf, size_t count, int nr)
old_fan_mode = data->conf1;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
if ((ret = get_fan_auto_nearest(data, nr, val, data->conf1, &reg))) {
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return ret;
}
if (((data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1)) & ADM1031_CONF1_AUTO_MODE) ^
@@ -288,7 +289,7 @@ set_fan_auto_channel(struct device *dev, const char *buf, size_t count, int nr)
}
data->conf1 = FAN_CHAN_TO_REG(reg, data->conf1);
adm1031_write_value(client, ADM1031_REG_CONF1, data->conf1);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -329,11 +330,11 @@ set_auto_temp_min(struct device *dev, const char *buf, size_t count, int nr)
struct adm1031_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->auto_temp[nr] = AUTO_TEMP_MIN_TO_REG(val, data->auto_temp[nr]);
adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
data->auto_temp[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
static ssize_t show_auto_temp_max(struct device *dev, char *buf, int nr)
@@ -349,11 +350,11 @@ set_auto_temp_max(struct device *dev, const char *buf, size_t count, int nr)
struct adm1031_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp_max[nr] = AUTO_TEMP_MAX_TO_REG(val, data->auto_temp[nr], data->pwm[nr]);
adm1031_write_value(client, ADM1031_REG_AUTO_TEMP(nr),
data->temp_max[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -405,11 +406,11 @@ set_pwm(struct device *dev, const char *buf, size_t count, int nr)
int val = simple_strtol(buf, NULL, 10);
int reg;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
if ((data->conf1 & ADM1031_CONF1_AUTO_MODE) &&
(((val>>4) & 0xf) != 5)) {
/* In automatic mode, the only PWM accepted is 33% */
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return -EINVAL;
}
data->pwm[nr] = PWM_TO_REG(val);
@@ -417,7 +418,7 @@ set_pwm(struct device *dev, const char *buf, size_t count, int nr)
adm1031_write_value(client, ADM1031_REG_PWM,
nr ? ((data->pwm[nr] << 4) & 0xf0) | (reg & 0xf)
: (data->pwm[nr] & 0xf) | (reg & 0xf0));
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -511,7 +512,7 @@ set_fan_min(struct device *dev, const char *buf, size_t count, int nr)
struct adm1031_data *data = i2c_get_clientdata(client);
int val = simple_strtol(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
if (val) {
data->fan_min[nr] =
FAN_TO_REG(val, FAN_DIV_FROM_REG(data->fan_div[nr]));
@@ -519,7 +520,7 @@ set_fan_min(struct device *dev, const char *buf, size_t count, int nr)
data->fan_min[nr] = 0xff;
}
adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr), data->fan_min[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
@@ -540,7 +541,7 @@ set_fan_div(struct device *dev, const char *buf, size_t count, int nr)
if (tmp == 0xff)
return -EINVAL;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
old_div = FAN_DIV_FROM_REG(data->fan_div[nr]);
data->fan_div[nr] = (tmp & 0xC0) | (0x3f & data->fan_div[nr]);
new_min = data->fan_min[nr] * old_div /
@@ -553,7 +554,7 @@ set_fan_div(struct device *dev, const char *buf, size_t count, int nr)
data->fan_div[nr]);
adm1031_write_value(client, ADM1031_REG_FAN_MIN(nr),
data->fan_min[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -627,11 +628,11 @@ set_temp_min(struct device *dev, const char *buf, size_t count, int nr)
val = simple_strtol(buf, NULL, 10);
val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp_min[nr] = TEMP_TO_REG(val);
adm1031_write_value(client, ADM1031_REG_TEMP_MIN(nr),
data->temp_min[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
@@ -643,11 +644,11 @@ set_temp_max(struct device *dev, const char *buf, size_t count, int nr)
val = simple_strtol(buf, NULL, 10);
val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp_max[nr] = TEMP_TO_REG(val);
adm1031_write_value(client, ADM1031_REG_TEMP_MAX(nr),
data->temp_max[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
static ssize_t
@@ -659,11 +660,11 @@ set_temp_crit(struct device *dev, const char *buf, size_t count, int nr)
val = simple_strtol(buf, NULL, 10);
val = SENSORS_LIMIT(val, -55000, nr == 0 ? 127750 : 127875);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp_crit[nr] = TEMP_TO_REG(val);
adm1031_write_value(client, ADM1031_REG_TEMP_CRIT(nr),
data->temp_crit[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -778,7 +779,7 @@ static int adm1031_detect(struct i2c_adapter *adapter, int address, int kind)
strlcpy(new_client->name, name, 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)))
@@ -891,7 +892,7 @@ static struct adm1031_data *adm1031_update_device(struct device *dev)
struct adm1031_data *data = i2c_get_clientdata(client);
int chan;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|| !data->valid) {
@@ -965,7 +966,7 @@ static struct adm1031_data *adm1031_update_device(struct device *dev)
data->valid = 1;
}
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return data;
}
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