From: Guenter Roeck <linux@roeck-us.net>
Date: Fri, 4 Apr 2014 16:01:35 +0000 (+0200)
Subject: hwmon: (lm90) Create all sysfs groups in one call
X-Git-Tag: v4.13~7562^2~3
X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=084489e64cad50b2a3927abafc69b6fd72eb56bc;p=mirror_ubuntu-bionic-kernel.git

hwmon: (lm90) Create all sysfs groups in one call

Create all sysfs groups in one call by using sysfs_create_groups
instead of calling sysfs_create_group individually for each group.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Jean Delvare <jdelvare@suse.de>
---

diff --git a/drivers/hwmon/lm90.c b/drivers/hwmon/lm90.c
index 07ffd1061e35..9ad7401f3b2c 100644
--- a/drivers/hwmon/lm90.c
+++ b/drivers/hwmon/lm90.c
@@ -366,6 +366,7 @@ enum lm90_temp11_reg_index {
 
 struct lm90_data {
 	struct device *hwmon_dev;
+	const struct attribute_group *groups[6];
 	struct mutex update_lock;
 	struct regulator *regulator;
 	char valid; /* zero until following fields are valid */
@@ -1402,22 +1403,6 @@ static int lm90_detect(struct i2c_client *client,
 	return 0;
 }
 
-static void lm90_remove_files(struct i2c_client *client, struct lm90_data *data)
-{
-	struct device *dev = &client->dev;
-
-	if (data->flags & LM90_HAVE_TEMP3)
-		sysfs_remove_group(&dev->kobj, &lm90_temp3_group);
-	if (data->flags & LM90_HAVE_EMERGENCY_ALARM)
-		sysfs_remove_group(&dev->kobj, &lm90_emergency_alarm_group);
-	if (data->flags & LM90_HAVE_EMERGENCY)
-		sysfs_remove_group(&dev->kobj, &lm90_emergency_group);
-	if (data->flags & LM90_HAVE_OFFSET)
-		sysfs_remove_group(&dev->kobj, &lm90_temp2_offset_group);
-	device_remove_file(dev, &dev_attr_pec);
-	sysfs_remove_group(&dev->kobj, &lm90_group);
-}
-
 static void lm90_restore_conf(struct i2c_client *client, struct lm90_data *data)
 {
 	/* Restore initial configuration */
@@ -1528,6 +1513,7 @@ static int lm90_probe(struct i2c_client *client,
 	struct i2c_adapter *adapter = to_i2c_adapter(dev->parent);
 	struct lm90_data *data;
 	struct regulator *regulator;
+	int groups = 0;
 	int err;
 
 	regulator = devm_regulator_get(dev, "vcc");
@@ -1573,36 +1559,30 @@ static int lm90_probe(struct i2c_client *client,
 	lm90_init_client(client);
 
 	/* Register sysfs hooks */
-	err = sysfs_create_group(&dev->kobj, &lm90_group);
-	if (err)
-		goto exit_restore;
+	data->groups[groups++] = &lm90_group;
+
+	if (data->flags & LM90_HAVE_OFFSET)
+		data->groups[groups++] = &lm90_temp2_offset_group;
+
+	if (data->flags & LM90_HAVE_EMERGENCY)
+		data->groups[groups++] = &lm90_emergency_group;
+
+	if (data->flags & LM90_HAVE_EMERGENCY_ALARM)
+		data->groups[groups++] = &lm90_emergency_alarm_group;
+
+	if (data->flags & LM90_HAVE_TEMP3)
+		data->groups[groups++] = &lm90_temp3_group;
+
 	if (client->flags & I2C_CLIENT_PEC) {
 		err = device_create_file(dev, &dev_attr_pec);
 		if (err)
-			goto exit_remove_files;
-	}
-	if (data->flags & LM90_HAVE_OFFSET) {
-		err = sysfs_create_group(&dev->kobj, &lm90_temp2_offset_group);
-		if (err)
-			goto exit_remove_files;
-	}
-	if (data->flags & LM90_HAVE_EMERGENCY) {
-		err = sysfs_create_group(&dev->kobj, &lm90_emergency_group);
-		if (err)
-			goto exit_remove_files;
-	}
-	if (data->flags & LM90_HAVE_EMERGENCY_ALARM) {
-		err = sysfs_create_group(&dev->kobj,
-					 &lm90_emergency_alarm_group);
-		if (err)
-			goto exit_remove_files;
-	}
-	if (data->flags & LM90_HAVE_TEMP3) {
-		err = sysfs_create_group(&dev->kobj, &lm90_temp3_group);
-		if (err)
-			goto exit_remove_files;
+			goto exit_restore;
 	}
 
+	err = sysfs_create_groups(&dev->kobj, data->groups);
+	if (err)
+		goto exit_remove_pec;
+
 	data->hwmon_dev = hwmon_device_register(dev);
 	if (IS_ERR(data->hwmon_dev)) {
 		err = PTR_ERR(data->hwmon_dev);
@@ -1626,7 +1606,9 @@ static int lm90_probe(struct i2c_client *client,
 exit_unregister:
 	hwmon_device_unregister(data->hwmon_dev);
 exit_remove_files:
-	lm90_remove_files(client, data);
+	sysfs_remove_groups(&dev->kobj, data->groups);
+exit_remove_pec:
+	device_remove_file(dev, &dev_attr_pec);
 exit_restore:
 	lm90_restore_conf(client, data);
 	regulator_disable(data->regulator);
@@ -1639,7 +1621,8 @@ static int lm90_remove(struct i2c_client *client)
 	struct lm90_data *data = i2c_get_clientdata(client);
 
 	hwmon_device_unregister(data->hwmon_dev);
-	lm90_remove_files(client, data);
+	sysfs_remove_groups(&client->dev.kobj, data->groups);
+	device_remove_file(&client->dev, &dev_attr_pec);
 	lm90_restore_conf(client, data);
 	regulator_disable(data->regulator);