hwmon: use sysfs_emit() to instead of scnprintf()

Replace the open-code with sysfs_emit() to simplify the code.

Signed-off-by: ye xingchen <ye.xingchen@zte.com.cn>
Link: https://lore.kernel.org/r/202212011130317080061@zte.com.cn
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

drivers/hwmon/ds1621.c

@@ -269,7 +269,7 @@ static ssize_t update_interval_show(struct device *dev,
 				    struct device_attribute *da, char *buf)
 {
 	struct ds1621_data *data = dev_get_drvdata(dev);
-	return scnprintf(buf, PAGE_SIZE, "%hu\n", data->update_interval);
+	return sysfs_emit(buf, "%hu\n", data->update_interval);
 }
 
 static ssize_t update_interval_store(struct device *dev,

drivers/hwmon/lm73.c

@@ -92,7 +92,7 @@ static ssize_t temp_show(struct device *dev, struct device_attribute *da,
 	/* use integer division instead of equivalent right shift to
 	   guarantee arithmetic shift and preserve the sign */
 	temp = (((s16) err) * 250) / 32;
-	return scnprintf(buf, PAGE_SIZE, "%d\n", temp);
+	return sysfs_emit(buf, "%d\n", temp);
 }
 
 static ssize_t convrate_store(struct device *dev, struct device_attribute *da,
@@ -137,7 +137,7 @@ static ssize_t convrate_show(struct device *dev, struct device_attribute *da,
 	int res;
 
 	res = (data->ctrl & LM73_CTRL_RES_MASK) >> LM73_CTRL_RES_SHIFT;
-	return scnprintf(buf, PAGE_SIZE, "%hu\n", lm73_convrates[res]);
+	return sysfs_emit(buf, "%hu\n", lm73_convrates[res]);
 }
 
 static ssize_t maxmin_alarm_show(struct device *dev,
@@ -154,7 +154,7 @@ static ssize_t maxmin_alarm_show(struct device *dev,
 	data->ctrl = ctrl;
 	mutex_unlock(&data->lock);
 
-	return scnprintf(buf, PAGE_SIZE, "%d\n", (ctrl >> attr->index) & 1);
+	return sysfs_emit(buf, "%d\n", (ctrl >> attr->index) & 1);
 
 abort:
 	mutex_unlock(&data->lock);

drivers/hwmon/sht3x.c

@@ -320,7 +320,7 @@ static ssize_t temp1_limit_show(struct device *dev,
 	u8 index = to_sensor_dev_attr(attr)->index;
 	int temperature_limit = data->temperature_limits[index];
 
-	return scnprintf(buf, PAGE_SIZE, "%d\n", temperature_limit);
+	return sysfs_emit(buf, "%d\n", temperature_limit);
 }
 
 static ssize_t humidity1_limit_show(struct device *dev,
@@ -331,7 +331,7 @@ static ssize_t humidity1_limit_show(struct device *dev,
 	u8 index = to_sensor_dev_attr(attr)->index;
 	u32 humidity_limit = data->humidity_limits[index];
 
-	return scnprintf(buf, PAGE_SIZE, "%u\n", humidity_limit);
+	return sysfs_emit(buf, "%u\n", humidity_limit);
 }
 
 /*
@@ -483,7 +483,7 @@ static ssize_t temp1_alarm_show(struct device *dev,
 	if (ret)
 		return ret;
 
-	return scnprintf(buf, PAGE_SIZE, "%d\n", !!(buffer[0] & 0x04));
+	return sysfs_emit(buf, "%d\n", !!(buffer[0] & 0x04));
 }
 
 static ssize_t humidity1_alarm_show(struct device *dev,
@@ -498,7 +498,7 @@ static ssize_t humidity1_alarm_show(struct device *dev,
 	if (ret)
 		return ret;
 
-	return scnprintf(buf, PAGE_SIZE, "%d\n", !!(buffer[0] & 0x08));
+	return sysfs_emit(buf, "%d\n", !!(buffer[0] & 0x08));
 }
 
 static ssize_t heater_enable_show(struct device *dev,
@@ -513,7 +513,7 @@ static ssize_t heater_enable_show(struct device *dev,
 	if (ret)
 		return ret;
 
-	return scnprintf(buf, PAGE_SIZE, "%d\n", !!(buffer[0] & 0x20));
+	return sysfs_emit(buf, "%d\n", !!(buffer[0] & 0x20));
 }
 
 static ssize_t heater_enable_store(struct device *dev,
@@ -550,7 +550,7 @@ static ssize_t update_interval_show(struct device *dev,
 {
 	struct sht3x_data *data = dev_get_drvdata(dev);
 
-	return scnprintf(buf, PAGE_SIZE, "%u\n",
+	return sysfs_emit(buf, "%u\n",
 			 mode_to_update_interval[data->mode]);
 }