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path: root/drivers/hwmon/lm78.c
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Diffstat (limited to 'drivers/hwmon/lm78.c')
-rw-r--r--drivers/hwmon/lm78.c51
1 files changed, 26 insertions, 25 deletions
diff --git a/drivers/hwmon/lm78.c b/drivers/hwmon/lm78.c
index e404001e20da..94be3d797e61 100644
--- a/drivers/hwmon/lm78.c
+++ b/drivers/hwmon/lm78.c
@@ -27,6 +27,7 @@
#include <linux/hwmon.h>
#include <linux/hwmon-vid.h>
#include <linux/err.h>
+#include <linux/mutex.h>
#include <asm/io.h>
/* Addresses to scan */
@@ -131,10 +132,10 @@ static inline int TEMP_FROM_REG(s8 val)
struct lm78_data {
struct i2c_client client;
struct class_device *class_dev;
- struct semaphore lock;
+ struct mutex lock;
enum chips type;
- struct semaphore update_lock;
+ struct mutex update_lock;
char valid; /* !=0 if following fields are valid */
unsigned long last_updated; /* In jiffies */
@@ -157,8 +158,8 @@ static int lm78_isa_attach_adapter(struct i2c_adapter *adapter);
static int lm78_detect(struct i2c_adapter *adapter, int address, int kind);
static int lm78_detach_client(struct i2c_client *client);
-static int lm78_read_value(struct i2c_client *client, u8 register);
-static int lm78_write_value(struct i2c_client *client, u8 register, u8 value);
+static int lm78_read_value(struct i2c_client *client, u8 reg);
+static int lm78_write_value(struct i2c_client *client, u8 reg, u8 value);
static struct lm78_data *lm78_update_device(struct device *dev);
static void lm78_init_client(struct i2c_client *client);
@@ -207,10 +208,10 @@ static ssize_t set_in_min(struct device *dev, const char *buf,
struct lm78_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->in_min[nr] = IN_TO_REG(val);
lm78_write_value(client, LM78_REG_IN_MIN(nr), data->in_min[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -221,10 +222,10 @@ static ssize_t set_in_max(struct device *dev, const char *buf,
struct lm78_data *data = i2c_get_clientdata(client);
unsigned long val = simple_strtoul(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->in_max[nr] = IN_TO_REG(val);
lm78_write_value(client, LM78_REG_IN_MAX(nr), data->in_max[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -288,10 +289,10 @@ static ssize_t set_temp_over(struct device *dev, struct device_attribute *attr,
struct lm78_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp_over = TEMP_TO_REG(val);
lm78_write_value(client, LM78_REG_TEMP_OVER, data->temp_over);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -307,10 +308,10 @@ static ssize_t set_temp_hyst(struct device *dev, struct device_attribute *attr,
struct lm78_data *data = i2c_get_clientdata(client);
long val = simple_strtol(buf, NULL, 10);
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
data->temp_hyst = TEMP_TO_REG(val);
lm78_write_value(client, LM78_REG_TEMP_HYST, data->temp_hyst);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -342,10 +343,10 @@ static ssize_t set_fan_min(struct device *dev, const char *buf,
struct lm78_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_min[nr] = FAN_TO_REG(val, DIV_FROM_REG(data->fan_div[nr]));
lm78_write_value(client, LM78_REG_FAN_MIN(nr), data->fan_min[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -368,7 +369,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf,
unsigned long min;
u8 reg;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
min = FAN_FROM_REG(data->fan_min[nr],
DIV_FROM_REG(data->fan_div[nr]));
@@ -380,7 +381,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf,
default:
dev_err(&client->dev, "fan_div value %ld not "
"supported. Choose one of 1, 2, 4 or 8!\n", val);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return -EINVAL;
}
@@ -398,7 +399,7 @@ static ssize_t set_fan_div(struct device *dev, const char *buf,
data->fan_min[nr] =
FAN_TO_REG(min, DIV_FROM_REG(data->fan_div[nr]));
lm78_write_value(client, LM78_REG_FAN_MIN(nr), data->fan_min[nr]);
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return count;
}
@@ -548,7 +549,7 @@ static int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
new_client = &data->client;
if (is_isa)
- init_MUTEX(&data->lock);
+ mutex_init(&data->lock);
i2c_set_clientdata(new_client, data);
new_client->addr = address;
new_client->adapter = adapter;
@@ -598,7 +599,7 @@ static int lm78_detect(struct i2c_adapter *adapter, int address, int kind)
data->type = kind;
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)))
@@ -697,10 +698,10 @@ static int lm78_read_value(struct i2c_client *client, u8 reg)
int res;
if (i2c_is_isa_client(client)) {
struct lm78_data *data = i2c_get_clientdata(client);
- down(&data->lock);
+ mutex_lock(&data->lock);
outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET);
res = inb_p(client->addr + LM78_DATA_REG_OFFSET);
- up(&data->lock);
+ mutex_unlock(&data->lock);
return res;
} else
return i2c_smbus_read_byte_data(client, reg);
@@ -717,10 +718,10 @@ static int lm78_write_value(struct i2c_client *client, u8 reg, u8 value)
{
if (i2c_is_isa_client(client)) {
struct lm78_data *data = i2c_get_clientdata(client);
- down(&data->lock);
+ mutex_lock(&data->lock);
outb_p(reg, client->addr + LM78_ADDR_REG_OFFSET);
outb_p(value, client->addr + LM78_DATA_REG_OFFSET);
- up(&data->lock);
+ mutex_unlock(&data->lock);
return 0;
} else
return i2c_smbus_write_byte_data(client, reg, value);
@@ -742,7 +743,7 @@ static struct lm78_data *lm78_update_device(struct device *dev)
struct lm78_data *data = i2c_get_clientdata(client);
int i;
- down(&data->update_lock);
+ mutex_lock(&data->update_lock);
if (time_after(jiffies, data->last_updated + HZ + HZ / 2)
|| !data->valid) {
@@ -786,7 +787,7 @@ static struct lm78_data *lm78_update_device(struct device *dev)
data->fan_div[2] = 1;
}
- up(&data->update_lock);
+ mutex_unlock(&data->update_lock);
return data;
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-29 02:02:50 +0100