misc: bh1780: Introduce the use of devm_kzalloc
This patch introduces the use of devm_kzalloc and does away with the
kfrees in the probe and remove functions. A label and the kfree
being called on the return path of failure on i2c_check_functionality,
which is completely unnecessary and removed. The NULL assignment of
ddata is no longer required is also done away with.
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/bh1780gli.c b/drivers/misc/bh1780gli.c
index 48ea33d..4c4a59b 100644
--- a/drivers/misc/bh1780gli.c
+++ b/drivers/misc/bh1780gli.c
@@ -149,50 +149,35 @@
const struct i2c_device_id *id)
{
int ret;
- struct bh1780_data *ddata = NULL;
+ struct bh1780_data *ddata;
struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE)) {
- ret = -EIO;
- goto err_op_failed;
- }
+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE))
+ return -EIO;
- ddata = kzalloc(sizeof(struct bh1780_data), GFP_KERNEL);
- if (ddata == NULL) {
- ret = -ENOMEM;
- goto err_op_failed;
- }
+ ddata = devm_kzalloc(&client->dev, sizeof(struct bh1780_data),
+ GFP_KERNEL);
+ if (ddata == NULL)
+ return -ENOMEM;
ddata->client = client;
i2c_set_clientdata(client, ddata);
ret = bh1780_read(ddata, BH1780_REG_PARTID, "PART ID");
if (ret < 0)
- goto err_op_failed;
+ return ret;
dev_info(&client->dev, "Ambient Light Sensor, Rev : %d\n",
(ret & BH1780_REVMASK));
mutex_init(&ddata->lock);
- ret = sysfs_create_group(&client->dev.kobj, &bh1780_attr_group);
- if (ret)
- goto err_op_failed;
-
- return 0;
-
-err_op_failed:
- kfree(ddata);
- return ret;
+ return sysfs_create_group(&client->dev.kobj, &bh1780_attr_group);
}
static int bh1780_remove(struct i2c_client *client)
{
- struct bh1780_data *ddata;
-
- ddata = i2c_get_clientdata(client);
sysfs_remove_group(&client->dev.kobj, &bh1780_attr_group);
- kfree(ddata);
return 0;
}