1 files changed, 31 insertions, 21 deletions

diff --git a/drivers/hwmon/max16065.c b/drivers/hwmon/max16065.c
index 49b7e0b6d1bb..4c9e7892a73c 100644
--- a/drivers/hwmon/max16065.c
+++ b/drivers/hwmon/max16065.c
@@ -79,7 +79,7 @@ static const bool max16065_have_current[] = {
 };
 
 struct max16065_data {
-	enum chips type;
+	enum chips chip;
 	struct i2c_client *client;
 	const struct attribute_group *groups[4];
 	struct mutex update_lock;
@@ -114,9 +114,10 @@ static inline int LIMIT_TO_MV(int limit, int range)
 	return limit * range / 256;
 }
 
-static inline int MV_TO_LIMIT(int mv, int range)
+static inline int MV_TO_LIMIT(unsigned long mv, int range)
 {
-	return clamp_val(DIV_ROUND_CLOSEST(mv * 256, range), 0, 255);
+	mv = clamp_val(mv, 0, ULONG_MAX / 256);
+	return DIV_ROUND_CLOSEST(clamp_val(mv * 256, 0, range * 255), range);
 }
 
 static inline int ADC_TO_CURR(int adc, int gain)
@@ -161,12 +162,19 @@ static struct max16065_data *max16065_update_device(struct device *dev)
 						     MAX16065_CURR_SENSE);
 		}
 
-		for (i = 0; i < DIV_ROUND_UP(data->num_adc, 8); i++)
+		for (i = 0; i < 2; i++)
 			data->fault[i]
 			  = i2c_smbus_read_byte_data(client, MAX16065_FAULT(i));
 
+		/*
+		 * MAX16067 and MAX16068 have separate undervoltage and
+		 * overvoltage alarm bits. Squash them together.
+		 */
+		if (data->chip == max16067 || data->chip == max16068)
+			data->fault[0] |= data->fault[1];
+
 		data->last_updated = jiffies;
-		data->valid = 1;
+		data->valid = true;
 	}
 	mutex_unlock(&data->update_lock);
 	return data;
@@ -187,7 +195,7 @@ static ssize_t max16065_alarm_show(struct device *dev,
 		i2c_smbus_write_byte_data(data->client,
 					  MAX16065_FAULT(attr2->nr), val);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", !!val);
+	return sysfs_emit(buf, "%d\n", !!val);
 }
 
 static ssize_t max16065_input_show(struct device *dev,
@@ -200,20 +208,21 @@ static ssize_t max16065_input_show(struct device *dev,
 	if (unlikely(adc < 0))
 		return adc;
 
-	return snprintf(buf, PAGE_SIZE, "%d\n",
-			ADC_TO_MV(adc, data->range[attr->index]));
+	return sysfs_emit(buf, "%d\n",
+			  ADC_TO_MV(adc, data->range[attr->index]));
 }
 
 static ssize_t max16065_current_show(struct device *dev,
 				     struct device_attribute *da, char *buf)
 {
 	struct max16065_data *data = max16065_update_device(dev);
+	int curr_sense = data->curr_sense;
 
-	if (unlikely(data->curr_sense < 0))
-		return data->curr_sense;
+	if (unlikely(curr_sense < 0))
+		return curr_sense;
 
-	return snprintf(buf, PAGE_SIZE, "%d\n",
-			ADC_TO_CURR(data->curr_sense, data->curr_gain));
+	return sysfs_emit(buf, "%d\n",
+			  ADC_TO_CURR(curr_sense, data->curr_gain));
 }
 
 static ssize_t max16065_limit_store(struct device *dev,
@@ -249,8 +258,8 @@ static ssize_t max16065_limit_show(struct device *dev,
 	struct sensor_device_attribute_2 *attr2 = to_sensor_dev_attr_2(da);
 	struct max16065_data *data = dev_get_drvdata(dev);
 
-	return snprintf(buf, PAGE_SIZE, "%d\n",
-			data->limit[attr2->nr][attr2->index]);
+	return sysfs_emit(buf, "%d\n",
+			  data->limit[attr2->nr][attr2->index]);
 }
 
 /* Construct a sensor_device_attribute structure for each register */
@@ -454,7 +463,7 @@ static struct attribute *max16065_max_attributes[] = {
 static umode_t max16065_basic_is_visible(struct kobject *kobj,
 					 struct attribute *a, int n)
 {
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct max16065_data *data = dev_get_drvdata(dev);
 	int index = n / 4;
 
@@ -466,7 +475,7 @@ static umode_t max16065_basic_is_visible(struct kobject *kobj,
 static umode_t max16065_secondary_is_visible(struct kobject *kobj,
 					     struct attribute *a, int index)
 {
-	struct device *dev = container_of(kobj, struct device, kobj);
+	struct device *dev = kobj_to_dev(kobj);
 	struct max16065_data *data = dev_get_drvdata(dev);
 
 	if (index >= data->num_adc)
@@ -493,8 +502,7 @@ static const struct attribute_group max16065_max_group = {
 	.is_visible = max16065_secondary_is_visible,
 };
 
-static int max16065_probe(struct i2c_client *client,
-			  const struct i2c_device_id *id)
+static int max16065_probe(struct i2c_client *client)
 {
 	struct i2c_adapter *adapter = client->adapter;
 	struct max16065_data *data;
@@ -504,6 +512,7 @@ static int max16065_probe(struct i2c_client *client,
 	bool have_secondary;		/* true if chip has secondary limits */
 	bool secondary_is_max = false;	/* secondary limits reflect max */
 	int groups = 0;
+	enum chips chip = (uintptr_t)i2c_get_match_data(client);
 
 	if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA
 				     | I2C_FUNC_SMBUS_READ_WORD_DATA))
@@ -513,12 +522,13 @@ static int max16065_probe(struct i2c_client *client,
 	if (unlikely(!data))
 		return -ENOMEM;
 
+	data->chip = chip;
 	data->client = client;
 	mutex_init(&data->update_lock);
 
-	data->num_adc = max16065_num_adc[id->driver_data];
-	data->have_current = max16065_have_current[id->driver_data];
-	have_secondary = max16065_have_secondary[id->driver_data];
+	data->num_adc = max16065_num_adc[chip];
+	data->have_current = max16065_have_current[chip];
+	have_secondary = max16065_have_secondary[chip];
 
 	if (have_secondary) {
 		val = i2c_smbus_read_byte_data(client, MAX16065_SW_ENABLE);