[lm-sensors] [RFT][PATCH 1/2] hwmon: (adm9240) Avoid forward declaration

[Axel Lin <axel.lin@ingics.com>]

Reorder functions to avoid forward declaration.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
---
 drivers/hwmon/adm9240.c | 315 +++++++++++++++++++++++-------------------------
 1 file changed, 153 insertions(+), 162 deletions(-)

diff --git a/drivers/hwmon/adm9240.c b/drivers/hwmon/adm9240.c
index 086d02a..8235ae4 100644
--- a/drivers/hwmon/adm9240.c
+++ b/drivers/hwmon/adm9240.c
@@ -130,35 +130,6 @@ static inline unsigned int AOUT_FROM_REG(u8 reg)
 	return SCALE(reg, 1250, 255);
 }
 
-static int adm9240_probe(struct i2c_client *client,
-			 const struct i2c_device_id *id);
-static int adm9240_detect(struct i2c_client *client,
-			  struct i2c_board_info *info);
-static void adm9240_init_client(struct i2c_client *client);
-static int adm9240_remove(struct i2c_client *client);
-static struct adm9240_data *adm9240_update_device(struct device *dev);
-
-/* driver data */
-static const struct i2c_device_id adm9240_id[] = {
-	{ "adm9240", adm9240 },
-	{ "ds1780", ds1780 },
-	{ "lm81", lm81 },
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, adm9240_id);
-
-static struct i2c_driver adm9240_driver = {
-	.class		= I2C_CLASS_HWMON,
-	.driver = {
-		.name	= "adm9240",
-	},
-	.probe		= adm9240_probe,
-	.remove		= adm9240_remove,
-	.id_table	= adm9240_id,
-	.detect		= adm9240_detect,
-	.address_list	= normal_i2c,
-};
-
 /* per client data */
 struct adm9240_data {
 	struct device *hwmon_dev;
@@ -181,6 +152,110 @@ struct adm9240_data {
 	u8 vrm;			/* --	vrm set on startup, no accessor */
 };
 
+/* write new fan div, callers must hold data->update_lock */
+static void adm9240_write_fan_div(struct i2c_client *client, int nr,
+		u8 fan_div)
+{
+	u8 reg, old, shift = (nr + 2) * 2;
+
+	reg = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
+	old = (reg >> shift) & 3;
+	reg &= ~(3 << shift);
+	reg |= (fan_div << shift);
+	i2c_smbus_write_byte_data(client, ADM9240_REG_VID_FAN_DIV, reg);
+	dev_dbg(&client->dev,
+		"fan%d clock divider changed from %u to %u\n",
+		nr + 1, 1 << old, 1 << fan_div);
+}
+
+static struct adm9240_data *adm9240_update_device(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct adm9240_data *data = i2c_get_clientdata(client);
+	int i;
+
+	mutex_lock(&data->update_lock);
+
+	/* minimum measurement cycle: 1.75 seconds */
+	if (time_after(jiffies, data->last_updated_measure + (HZ * 7 / 4))
+			|| !data->valid) {
+
+		for (i = 0; i < 6; i++) { /* read voltages */
+			data->in[i] = i2c_smbus_read_byte_data(client,
+					ADM9240_REG_IN(i));
+		}
+		data->alarms = i2c_smbus_read_byte_data(client,
+					ADM9240_REG_INT(0)) |
+					i2c_smbus_read_byte_data(client,
+					ADM9240_REG_INT(1)) << 8;
+
+		/*
+		 * read temperature: assume temperature changes less than
+		 * 0.5'C per two measurement cycles thus ignore possible
+		 * but unlikely aliasing error on lsb reading. --Grant
+		 */
+		data->temp = ((i2c_smbus_read_byte_data(client,
+					ADM9240_REG_TEMP) << 8) |
+					i2c_smbus_read_byte_data(client,
+					ADM9240_REG_TEMP_CONF)) / 128;
+
+		for (i = 0; i < 2; i++) { /* read fans */
+			data->fan[i] = i2c_smbus_read_byte_data(client,
+					ADM9240_REG_FAN(i));
+
+			/* adjust fan clock divider on overflow */
+			if (data->valid && data->fan[i] = 255 &&
+					data->fan_div[i] < 3) {
+
+				adm9240_write_fan_div(client, i,
+						++data->fan_div[i]);
+
+				/* adjust fan_min if active, but not to 0 */
+				if (data->fan_min[i] < 255 &&
+						data->fan_min[i] >= 2)
+					data->fan_min[i] /= 2;
+			}
+		}
+		data->last_updated_measure = jiffies;
+	}
+
+	/* minimum config reading cycle: 300 seconds */
+	if (time_after(jiffies, data->last_updated_config + (HZ * 300))
+			|| !data->valid) {
+
+		for (i = 0; i < 6; i++) {
+			data->in_min[i] = i2c_smbus_read_byte_data(client,
+					ADM9240_REG_IN_MIN(i));
+			data->in_max[i] = i2c_smbus_read_byte_data(client,
+					ADM9240_REG_IN_MAX(i));
+		}
+		for (i = 0; i < 2; i++) {
+			data->fan_min[i] = i2c_smbus_read_byte_data(client,
+					ADM9240_REG_FAN_MIN(i));
+		}
+		data->temp_max[0] = i2c_smbus_read_byte_data(client,
+				ADM9240_REG_TEMP_MAX(0));
+		data->temp_max[1] = i2c_smbus_read_byte_data(client,
+				ADM9240_REG_TEMP_MAX(1));
+
+		/* read fan divs and 5-bit VID */
+		i = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
+		data->fan_div[0] = (i >> 4) & 3;
+		data->fan_div[1] = (i >> 6) & 3;
+		data->vid = i & 0x0f;
+		data->vid |= (i2c_smbus_read_byte_data(client,
+					ADM9240_REG_VID4) & 1) << 4;
+		/* read analog out */
+		data->aout = i2c_smbus_read_byte_data(client,
+				ADM9240_REG_ANALOG_OUT);
+
+		data->last_updated_config = jiffies;
+		data->valid = 1;
+	}
+	mutex_unlock(&data->update_lock);
+	return data;
+}
+
 /*** sysfs accessors ***/
 
 /* temperature */
@@ -340,22 +415,6 @@ static ssize_t show_fan_div(struct device *dev,
 	return sprintf(buf, "%d\n", 1 << data->fan_div[attr->index]);
 }
 
-/* write new fan div, callers must hold data->update_lock */
-static void adm9240_write_fan_div(struct i2c_client *client, int nr,
-		u8 fan_div)
-{
-	u8 reg, old, shift = (nr + 2) * 2;
-
-	reg = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
-	old = (reg >> shift) & 3;
-	reg &= ~(3 << shift);
-	reg |= (fan_div << shift);
-	i2c_smbus_write_byte_data(client, ADM9240_REG_VID_FAN_DIV, reg);
-	dev_dbg(&client->dev,
-		"fan%d clock divider changed from %u to %u\n",
-		nr + 1, 1 << old, 1 << fan_div);
-}
-
 /*
  * set fan speed low limit:
  *
@@ -620,49 +679,6 @@ static int adm9240_detect(struct i2c_client *new_client,
 	return 0;
 }
 
-static int adm9240_probe(struct i2c_client *new_client,
-			 const struct i2c_device_id *id)
-{
-	struct adm9240_data *data;
-	int err;
-
-	data = devm_kzalloc(&new_client->dev, sizeof(*data), GFP_KERNEL);
-	if (!data)
-		return -ENOMEM;
-
-	i2c_set_clientdata(new_client, data);
-	mutex_init(&data->update_lock);
-
-	adm9240_init_client(new_client);
-
-	/* populate sysfs filesystem */
-	err = sysfs_create_group(&new_client->dev.kobj, &adm9240_group);
-	if (err)
-		return err;
-
-	data->hwmon_dev = hwmon_device_register(&new_client->dev);
-	if (IS_ERR(data->hwmon_dev)) {
-		err = PTR_ERR(data->hwmon_dev);
-		goto exit_remove;
-	}
-
-	return 0;
-
-exit_remove:
-	sysfs_remove_group(&new_client->dev.kobj, &adm9240_group);
-	return err;
-}
-
-static int adm9240_remove(struct i2c_client *client)
-{
-	struct adm9240_data *data = i2c_get_clientdata(client);
-
-	hwmon_device_unregister(data->hwmon_dev);
-	sysfs_remove_group(&client->dev.kobj, &adm9240_group);
-
-	return 0;
-}
-
 static void adm9240_init_client(struct i2c_client *client)
 {
 	struct adm9240_data *data = i2c_get_clientdata(client);
@@ -705,93 +721,68 @@ static void adm9240_init_client(struct i2c_client *client)
 	}
 }
 
-static struct adm9240_data *adm9240_update_device(struct device *dev)
+static int adm9240_probe(struct i2c_client *new_client,
+			 const struct i2c_device_id *id)
 {
-	struct i2c_client *client = to_i2c_client(dev);
-	struct adm9240_data *data = i2c_get_clientdata(client);
-	int i;
+	struct adm9240_data *data;
+	int err;
 
-	mutex_lock(&data->update_lock);
+	data = devm_kzalloc(&new_client->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
 
-	/* minimum measurement cycle: 1.75 seconds */
-	if (time_after(jiffies, data->last_updated_measure + (HZ * 7 / 4))
-			|| !data->valid) {
+	i2c_set_clientdata(new_client, data);
+	mutex_init(&data->update_lock);
 
-		for (i = 0; i < 6; i++) { /* read voltages */
-			data->in[i] = i2c_smbus_read_byte_data(client,
-					ADM9240_REG_IN(i));
-		}
-		data->alarms = i2c_smbus_read_byte_data(client,
-					ADM9240_REG_INT(0)) |
-					i2c_smbus_read_byte_data(client,
-					ADM9240_REG_INT(1)) << 8;
+	adm9240_init_client(new_client);
 
-		/*
-		 * read temperature: assume temperature changes less than
-		 * 0.5'C per two measurement cycles thus ignore possible
-		 * but unlikely aliasing error on lsb reading. --Grant
-		 */
-		data->temp = ((i2c_smbus_read_byte_data(client,
-					ADM9240_REG_TEMP) << 8) |
-					i2c_smbus_read_byte_data(client,
-					ADM9240_REG_TEMP_CONF)) / 128;
+	/* populate sysfs filesystem */
+	err = sysfs_create_group(&new_client->dev.kobj, &adm9240_group);
+	if (err)
+		return err;
 
-		for (i = 0; i < 2; i++) { /* read fans */
-			data->fan[i] = i2c_smbus_read_byte_data(client,
-					ADM9240_REG_FAN(i));
+	data->hwmon_dev = hwmon_device_register(&new_client->dev);
+	if (IS_ERR(data->hwmon_dev)) {
+		err = PTR_ERR(data->hwmon_dev);
+		goto exit_remove;
+	}
 
-			/* adjust fan clock divider on overflow */
-			if (data->valid && data->fan[i] = 255 &&
-					data->fan_div[i] < 3) {
+	return 0;
 
-				adm9240_write_fan_div(client, i,
-						++data->fan_div[i]);
+exit_remove:
+	sysfs_remove_group(&new_client->dev.kobj, &adm9240_group);
+	return err;
+}
 
-				/* adjust fan_min if active, but not to 0 */
-				if (data->fan_min[i] < 255 &&
-						data->fan_min[i] >= 2)
-					data->fan_min[i] /= 2;
-			}
-		}
-		data->last_updated_measure = jiffies;
-	}
+static int adm9240_remove(struct i2c_client *client)
+{
+	struct adm9240_data *data = i2c_get_clientdata(client);
 
-	/* minimum config reading cycle: 300 seconds */
-	if (time_after(jiffies, data->last_updated_config + (HZ * 300))
-			|| !data->valid) {
+	hwmon_device_unregister(data->hwmon_dev);
+	sysfs_remove_group(&client->dev.kobj, &adm9240_group);
 
-		for (i = 0; i < 6; i++) {
-			data->in_min[i] = i2c_smbus_read_byte_data(client,
-					ADM9240_REG_IN_MIN(i));
-			data->in_max[i] = i2c_smbus_read_byte_data(client,
-					ADM9240_REG_IN_MAX(i));
-		}
-		for (i = 0; i < 2; i++) {
-			data->fan_min[i] = i2c_smbus_read_byte_data(client,
-					ADM9240_REG_FAN_MIN(i));
-		}
-		data->temp_max[0] = i2c_smbus_read_byte_data(client,
-				ADM9240_REG_TEMP_MAX(0));
-		data->temp_max[1] = i2c_smbus_read_byte_data(client,
-				ADM9240_REG_TEMP_MAX(1));
+	return 0;
+}
 
-		/* read fan divs and 5-bit VID */
-		i = i2c_smbus_read_byte_data(client, ADM9240_REG_VID_FAN_DIV);
-		data->fan_div[0] = (i >> 4) & 3;
-		data->fan_div[1] = (i >> 6) & 3;
-		data->vid = i & 0x0f;
-		data->vid |= (i2c_smbus_read_byte_data(client,
-					ADM9240_REG_VID4) & 1) << 4;
-		/* read analog out */
-		data->aout = i2c_smbus_read_byte_data(client,
-				ADM9240_REG_ANALOG_OUT);
+static const struct i2c_device_id adm9240_id[] = {
+	{ "adm9240", adm9240 },
+	{ "ds1780", ds1780 },
+	{ "lm81", lm81 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, adm9240_id);
 
-		data->last_updated_config = jiffies;
-		data->valid = 1;
-	}
-	mutex_unlock(&data->update_lock);
-	return data;
-}
+static struct i2c_driver adm9240_driver = {
+	.class		= I2C_CLASS_HWMON,
+	.driver = {
+		.name	= "adm9240",
+	},
+	.probe		= adm9240_probe,
+	.remove		= adm9240_remove,
+	.id_table	= adm9240_id,
+	.detect		= adm9240_detect,
+	.address_list	= normal_i2c,
+};
 
 module_i2c_driver(adm9240_driver);
 
-- 
1.9.1




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