X-Git-Url: https://git.karo-electronics.de/?a=blobdiff_plain;f=drivers%2Fhwmon%2Ftmp421.c;h=738c472ece273bf972b1206e9b164b88d046b0bc;hb=872d65f674a8a420fdfe656cd66d1fa8e60f41a7;hp=4f7c051e2d7b0425308489fcbbc6c04eda68947d;hpb=d5e5deddf67389eabc3d9b13004c108120d397e1;p=karo-tx-linux.git

diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c
index 4f7c051e2d7b..738c472ece27 100644
--- a/drivers/hwmon/tmp421.c
+++ b/drivers/hwmon/tmp421.c
@@ -61,9 +61,9 @@ static const u8 TMP421_TEMP_LSB[4]		= { 0x10, 0x11, 0x12, 0x13 };
 #define TMP423_DEVICE_ID			0x23
 
 static const struct i2c_device_id tmp421_id[] = {
-	{ "tmp421", tmp421 },
-	{ "tmp422", tmp422 },
-	{ "tmp423", tmp423 },
+	{ "tmp421", 2 },
+	{ "tmp422", 3 },
+	{ "tmp423", 4 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, tmp421_id);
@@ -73,21 +73,23 @@ struct tmp421_data {
 	struct mutex update_lock;
 	char valid;
 	unsigned long last_updated;
-	int kind;
+	int channels;
 	u8 config;
 	s16 temp[4];
 };
 
 static int temp_from_s16(s16 reg)
 {
-	int temp = reg;
+	/* Mask out status bits */
+	int temp = reg & ~0xf;
 
 	return (temp * 1000 + 128) / 256;
 }
 
 static int temp_from_u16(u16 reg)
 {
-	int temp = reg;
+	/* Mask out status bits */
+	int temp = reg & ~0xf;
 
 	/* Add offset for extended temperature range. */
 	temp -= 64 * 256;
@@ -107,7 +109,7 @@ static struct tmp421_data *tmp421_update_device(struct device *dev)
 		data->config = i2c_smbus_read_byte_data(client,
 			TMP421_CONFIG_REG_1);
 
-		for (i = 0; i <= data->kind; i++) {
+		for (i = 0; i < data->channels; i++) {
 			data->temp[i] = i2c_smbus_read_byte_data(client,
 				TMP421_TEMP_MSB[i]) << 8;
 			data->temp[i] |= i2c_smbus_read_byte_data(client,
@@ -166,7 +168,7 @@ static mode_t tmp421_is_visible(struct kobject *kobj, struct attribute *a,
 	devattr = container_of(a, struct device_attribute, attr);
 	index = to_sensor_dev_attr(devattr)->index;
 
-	if (data->kind > index)
+	if (index < data->channels)
 		return a->mode;
 
 	return 0;
@@ -252,9 +254,9 @@ static int tmp421_detect(struct i2c_client *client,
 		return -ENODEV;
 	}
 
-	strlcpy(info->type, tmp421_id[kind - 1].name, I2C_NAME_SIZE);
+	strlcpy(info->type, tmp421_id[kind].name, I2C_NAME_SIZE);
 	dev_info(&adapter->dev, "Detected TI %s chip at 0x%02x\n",
-		 names[kind - 1], client->addr);
+		 names[kind], client->addr);
 
 	return 0;
 }
@@ -271,7 +273,7 @@ static int tmp421_probe(struct i2c_client *client,
 
 	i2c_set_clientdata(client, data);
 	mutex_init(&data->update_lock);
-	data->kind = id->driver_data;
+	data->channels = id->driver_data;
 
 	err = tmp421_init_client(client);
 	if (err)