hwmon: (pmbus) Convert pmbus drivers to use devm_kzalloc
Marginally less code and eliminate the possibility of memory leaks.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/drivers/hwmon/pmbus/adm1275.c b/drivers/hwmon/pmbus/adm1275.c
index fe52c3c..f81cb4a 100644
--- a/drivers/hwmon/pmbus/adm1275.c
+++ b/drivers/hwmon/pmbus/adm1275.c
@@ -229,7 +229,8 @@
if (device_config < 0)
return device_config;
- data = kzalloc(sizeof(struct adm1275_data), GFP_KERNEL);
+ data = devm_kzalloc(&client->dev, sizeof(struct adm1275_data),
+ GFP_KERNEL);
if (!data)
return -ENOMEM;
@@ -297,23 +298,12 @@
break;
}
- ret = pmbus_do_probe(client, id, info);
- if (ret)
- goto err_mem;
- return 0;
-
-err_mem:
- kfree(data);
- return ret;
+ return pmbus_do_probe(client, id, info);
}
static int adm1275_remove(struct i2c_client *client)
{
- const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
- const struct adm1275_data *data = to_adm1275_data(info);
-
pmbus_do_remove(client);
- kfree(data);
return 0;
}
diff --git a/drivers/hwmon/pmbus/lm25066.c b/drivers/hwmon/pmbus/lm25066.c
index 86ac15a..e70d4ca 100644
--- a/drivers/hwmon/pmbus/lm25066.c
+++ b/drivers/hwmon/pmbus/lm25066.c
@@ -176,7 +176,6 @@
const struct i2c_device_id *id)
{
int config;
- int ret;
struct lm25066_data *data;
struct pmbus_driver_info *info;
@@ -184,15 +183,14 @@
I2C_FUNC_SMBUS_READ_BYTE_DATA))
return -ENODEV;
- data = kzalloc(sizeof(struct lm25066_data), GFP_KERNEL);
+ data = devm_kzalloc(&client->dev, sizeof(struct lm25066_data),
+ GFP_KERNEL);
if (!data)
return -ENOMEM;
config = i2c_smbus_read_byte_data(client, LM25066_DEVICE_SETUP);
- if (config < 0) {
- ret = config;
- goto err_mem;
- }
+ if (config < 0)
+ return config;
data->id = id->driver_data;
info = &data->info;
@@ -291,27 +289,15 @@
}
break;
default:
- ret = -ENODEV;
- goto err_mem;
+ return -ENODEV;
}
- ret = pmbus_do_probe(client, id, info);
- if (ret)
- goto err_mem;
- return 0;
-
-err_mem:
- kfree(data);
- return ret;
+ return pmbus_do_probe(client, id, info);
}
static int lm25066_remove(struct i2c_client *client)
{
- const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
- const struct lm25066_data *data = to_lm25066_data(info);
-
pmbus_do_remove(client);
- kfree(data);
return 0;
}
diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c
index c9e4dd2..5e07a36 100644
--- a/drivers/hwmon/pmbus/ltc2978.c
+++ b/drivers/hwmon/pmbus/ltc2978.c
@@ -287,7 +287,7 @@
static int ltc2978_probe(struct i2c_client *client,
const struct i2c_device_id *id)
{
- int chip_id, ret, i;
+ int chip_id, i;
struct ltc2978_data *data;
struct pmbus_driver_info *info;
@@ -295,15 +295,14 @@
I2C_FUNC_SMBUS_READ_WORD_DATA))
return -ENODEV;
- data = kzalloc(sizeof(struct ltc2978_data), GFP_KERNEL);
+ data = devm_kzalloc(&client->dev, sizeof(struct ltc2978_data),
+ GFP_KERNEL);
if (!data)
return -ENOMEM;
chip_id = i2c_smbus_read_word_data(client, LTC2978_MFR_SPECIAL_ID);
- if (chip_id < 0) {
- ret = chip_id;
- goto err_mem;
- }
+ if (chip_id < 0)
+ return chip_id;
if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2) {
data->id = ltc2978;
@@ -311,8 +310,7 @@
data->id = ltc3880;
} else {
dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id);
- ret = -ENODEV;
- goto err_mem;
+ return -ENODEV;
}
if (data->id != id->driver_data)
dev_warn(&client->dev,
@@ -357,27 +355,15 @@
data->vout_min[1] = 0xffff;
break;
default:
- ret = -ENODEV;
- goto err_mem;
+ return -ENODEV;
}
- ret = pmbus_do_probe(client, id, info);
- if (ret)
- goto err_mem;
- return 0;
-
-err_mem:
- kfree(data);
- return ret;
+ return pmbus_do_probe(client, id, info);
}
static int ltc2978_remove(struct i2c_client *client)
{
- const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
- const struct ltc2978_data *data = to_ltc2978_data(info);
-
pmbus_do_remove(client);
- kfree(data);
return 0;
}
diff --git a/drivers/hwmon/pmbus/pmbus.c b/drivers/hwmon/pmbus/pmbus.c
index da5fe36..b94bec2 100644
--- a/drivers/hwmon/pmbus/pmbus.c
+++ b/drivers/hwmon/pmbus/pmbus.c
@@ -166,32 +166,21 @@
const struct i2c_device_id *id)
{
struct pmbus_driver_info *info;
- int ret;
- info = kzalloc(sizeof(struct pmbus_driver_info), GFP_KERNEL);
+ info = devm_kzalloc(&client->dev, sizeof(struct pmbus_driver_info),
+ GFP_KERNEL);
if (!info)
return -ENOMEM;
info->pages = id->driver_data;
info->identify = pmbus_identify;
- ret = pmbus_do_probe(client, id, info);
- if (ret < 0)
- goto out;
- return 0;
-
-out:
- kfree(info);
- return ret;
+ return pmbus_do_probe(client, id, info);
}
static int pmbus_remove(struct i2c_client *client)
{
- const struct pmbus_driver_info *info;
-
- info = pmbus_get_driver_info(client);
pmbus_do_remove(client);
- kfree(info);
return 0;
}
diff --git a/drivers/hwmon/pmbus/pmbus_core.c b/drivers/hwmon/pmbus/pmbus_core.c
index f571388..26b6542 100644
--- a/drivers/hwmon/pmbus/pmbus_core.c
+++ b/drivers/hwmon/pmbus/pmbus_core.c
@@ -1676,7 +1676,7 @@
| I2C_FUNC_SMBUS_WORD_DATA))
return -ENODEV;
- data = kzalloc(sizeof(*data), GFP_KERNEL);
+ data = devm_kzalloc(&client->dev, sizeof(*data), GFP_KERNEL);
if (!data) {
dev_err(&client->dev, "No memory to allocate driver data\n");
return -ENOMEM;
@@ -1688,8 +1688,7 @@
/* Bail out if PMBus status register does not exist. */
if (i2c_smbus_read_byte_data(client, PMBUS_STATUS_BYTE) < 0) {
dev_err(&client->dev, "PMBus status register not found\n");
- ret = -ENODEV;
- goto out_data;
+ return -ENODEV;
}
if (pdata)
@@ -1702,50 +1701,49 @@
ret = (*info->identify)(client, info);
if (ret < 0) {
dev_err(&client->dev, "Chip identification failed\n");
- goto out_data;
+ return ret;
}
}
if (info->pages <= 0 || info->pages > PMBUS_PAGES) {
dev_err(&client->dev, "Bad number of PMBus pages: %d\n",
info->pages);
- ret = -ENODEV;
- goto out_data;
+ return -ENODEV;
}
ret = pmbus_identify_common(client, data);
if (ret < 0) {
dev_err(&client->dev, "Failed to identify chip capabilities\n");
- goto out_data;
+ return ret;
}
ret = -ENOMEM;
- data->sensors = kzalloc(sizeof(struct pmbus_sensor) * data->max_sensors,
- GFP_KERNEL);
+ data->sensors = devm_kzalloc(&client->dev, sizeof(struct pmbus_sensor)
+ * data->max_sensors, GFP_KERNEL);
if (!data->sensors) {
dev_err(&client->dev, "No memory to allocate sensor data\n");
- goto out_data;
+ return -ENOMEM;
}
- data->booleans = kzalloc(sizeof(struct pmbus_boolean)
+ data->booleans = devm_kzalloc(&client->dev, sizeof(struct pmbus_boolean)
* data->max_booleans, GFP_KERNEL);
if (!data->booleans) {
dev_err(&client->dev, "No memory to allocate boolean data\n");
- goto out_sensors;
+ return -ENOMEM;
}
- data->labels = kzalloc(sizeof(struct pmbus_label) * data->max_labels,
- GFP_KERNEL);
+ data->labels = devm_kzalloc(&client->dev, sizeof(struct pmbus_label)
+ * data->max_labels, GFP_KERNEL);
if (!data->labels) {
dev_err(&client->dev, "No memory to allocate label data\n");
- goto out_booleans;
+ return -ENOMEM;
}
- data->attributes = kzalloc(sizeof(struct attribute *)
- * data->max_attributes, GFP_KERNEL);
+ data->attributes = devm_kzalloc(&client->dev, sizeof(struct attribute *)
+ * data->max_attributes, GFP_KERNEL);
if (!data->attributes) {
dev_err(&client->dev, "No memory to allocate attribute data\n");
- goto out_labels;
+ return -ENOMEM;
}
pmbus_find_attributes(client, data);
@@ -1756,8 +1754,7 @@
*/
if (!data->num_attributes) {
dev_err(&client->dev, "No attributes found\n");
- ret = -ENODEV;
- goto out_attributes;
+ return -ENODEV;
}
/* Register sysfs hooks */
@@ -1765,7 +1762,7 @@
ret = sysfs_create_group(&client->dev.kobj, &data->group);
if (ret) {
dev_err(&client->dev, "Failed to create sysfs entries\n");
- goto out_attributes;
+ return ret;
}
data->hwmon_dev = hwmon_device_register(&client->dev);
if (IS_ERR(data->hwmon_dev)) {
@@ -1777,16 +1774,6 @@
out_hwmon_device_register:
sysfs_remove_group(&client->dev.kobj, &data->group);
-out_attributes:
- kfree(data->attributes);
-out_labels:
- kfree(data->labels);
-out_booleans:
- kfree(data->booleans);
-out_sensors:
- kfree(data->sensors);
-out_data:
- kfree(data);
return ret;
}
EXPORT_SYMBOL_GPL(pmbus_do_probe);
@@ -1796,11 +1783,6 @@
struct pmbus_data *data = i2c_get_clientdata(client);
hwmon_device_unregister(data->hwmon_dev);
sysfs_remove_group(&client->dev.kobj, &data->group);
- kfree(data->attributes);
- kfree(data->labels);
- kfree(data->booleans);
- kfree(data->sensors);
- kfree(data);
}
EXPORT_SYMBOL_GPL(pmbus_do_remove);
diff --git a/drivers/hwmon/pmbus/ucd9000.c b/drivers/hwmon/pmbus/ucd9000.c
index 759a563..e057345 100644
--- a/drivers/hwmon/pmbus/ucd9000.c
+++ b/drivers/hwmon/pmbus/ucd9000.c
@@ -155,7 +155,8 @@
"Device mismatch: Configured %s, detected %s\n",
id->name, mid->name);
- data = kzalloc(sizeof(struct ucd9000_data), GFP_KERNEL);
+ data = devm_kzalloc(&client->dev, sizeof(struct ucd9000_data),
+ GFP_KERNEL);
if (!data)
return -ENOMEM;
info = &data->info;
@@ -164,13 +165,12 @@
if (ret < 0) {
dev_err(&client->dev,
"Failed to read number of active pages\n");
- goto out;
+ return ret;
}
info->pages = ret;
if (!info->pages) {
dev_err(&client->dev, "No pages configured\n");
- ret = -ENODEV;
- goto out;
+ return -ENODEV;
}
/* The internal temperature sensor is always active */
@@ -181,8 +181,7 @@
block_buffer);
if (ret <= 0) {
dev_err(&client->dev, "Failed to read configuration data\n");
- ret = -ENODEV;
- goto out;
+ return -ENODEV;
}
for (i = 0; i < ret; i++) {
int page = UCD9000_MON_PAGE(block_buffer[i]);
@@ -218,7 +217,7 @@
UCD9000_FAN_CONFIG,
data->fan_data[i]);
if (ret < 0)
- goto out;
+ return ret;
}
i2c_smbus_write_byte_data(client, UCD9000_FAN_CONFIG_INDEX, 0);
@@ -227,23 +226,12 @@
| PMBUS_HAVE_FAN34 | PMBUS_HAVE_STATUS_FAN34;
}
- ret = pmbus_do_probe(client, mid, info);
- if (ret < 0)
- goto out;
- return 0;
-
-out:
- kfree(data);
- return ret;
+ return pmbus_do_probe(client, mid, info);
}
static int ucd9000_remove(struct i2c_client *client)
{
- struct ucd9000_data *data;
-
- data = to_ucd9000_data(pmbus_get_driver_info(client));
pmbus_do_remove(client);
- kfree(data);
return 0;
}
diff --git a/drivers/hwmon/pmbus/ucd9200.c b/drivers/hwmon/pmbus/ucd9200.c
index 629d0c9..c0d41b9 100644
--- a/drivers/hwmon/pmbus/ucd9200.c
+++ b/drivers/hwmon/pmbus/ucd9200.c
@@ -81,7 +81,8 @@
"Device mismatch: Configured %s, detected %s\n",
id->name, mid->name);
- info = kzalloc(sizeof(struct pmbus_driver_info), GFP_KERNEL);
+ info = devm_kzalloc(&client->dev, sizeof(struct pmbus_driver_info),
+ GFP_KERNEL);
if (!info)
return -ENOMEM;
@@ -89,7 +90,7 @@
block_buffer);
if (ret < 0) {
dev_err(&client->dev, "Failed to read phase information\n");
- goto out;
+ return ret;
}
/*
@@ -106,8 +107,7 @@
}
if (!info->pages) {
dev_err(&client->dev, "No rails configured\n");
- ret = -ENODEV;
- goto out;
+ return -ENODEV;
}
dev_info(&client->dev, "%d rails configured\n", info->pages);
@@ -137,7 +137,7 @@
if (ret < 0) {
dev_err(&client->dev,
"Failed to initialize PHASE registers\n");
- goto out;
+ return ret;
}
}
if (info->pages > 1)
@@ -160,22 +160,12 @@
if (mid->driver_data == ucd9240)
info->func[0] |= PMBUS_HAVE_FAN12 | PMBUS_HAVE_STATUS_FAN12;
- ret = pmbus_do_probe(client, mid, info);
- if (ret < 0)
- goto out;
- return 0;
-out:
- kfree(info);
- return ret;
+ return pmbus_do_probe(client, mid, info);
}
static int ucd9200_remove(struct i2c_client *client)
{
- const struct pmbus_driver_info *info;
-
- info = pmbus_get_driver_info(client);
pmbus_do_remove(client);
- kfree(info);
return 0;
}
diff --git a/drivers/hwmon/pmbus/zl6100.c b/drivers/hwmon/pmbus/zl6100.c
index 8ae6581..9d3b845 100644
--- a/drivers/hwmon/pmbus/zl6100.c
+++ b/drivers/hwmon/pmbus/zl6100.c
@@ -193,7 +193,8 @@
"Device mismatch: Configured %s, detected %s\n",
id->name, mid->name);
- data = kzalloc(sizeof(struct zl6100_data), GFP_KERNEL);
+ data = devm_kzalloc(&client->dev, sizeof(struct zl6100_data),
+ GFP_KERNEL);
if (!data)
return -ENOMEM;
@@ -223,7 +224,8 @@
ret = i2c_smbus_read_word_data(client, ZL6100_MFR_CONFIG);
if (ret < 0)
- goto err_mem;
+ return ret;
+
if (ret & ZL6100_MFR_XTEMP_ENABLE)
info->func[0] |= PMBUS_HAVE_TEMP2;
@@ -235,23 +237,12 @@
info->write_word_data = zl6100_write_word_data;
info->write_byte = zl6100_write_byte;
- ret = pmbus_do_probe(client, mid, info);
- if (ret)
- goto err_mem;
- return 0;
-
-err_mem:
- kfree(data);
- return ret;
+ return pmbus_do_probe(client, mid, info);
}
static int zl6100_remove(struct i2c_client *client)
{
- const struct pmbus_driver_info *info = pmbus_get_driver_info(client);
- const struct zl6100_data *data = to_zl6100_data(info);
-
pmbus_do_remove(client);
- kfree(data);
return 0;
}