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hwmon: (w83793d) convert to use devm_i2c_new_dummy_device

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And simplify the error handling.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://lore.kernel.org/r/20190903181256.13450-4-wsa+renesas@sang-engineering.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Wolfram Sang 2019-09-03 20:12:56 +02:00 committed by Guenter Roeck
parent f64211151d
commit cf48d17623
1 changed files with 8 additions and 22 deletions
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30
drivers/hwmon/w83793.c
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@ -1551,9 +1551,6 @@ static int w83793_remove(struct i2c_client *client)
for (i = 0; i < ARRAY_SIZE(w83793_temp); i++)
device_remove_file(dev, &w83793_temp[i].dev_attr);
i2c_unregister_device(data->lm75[0]);
i2c_unregister_device(data->lm75[1]);
/* Decrease data reference counter */
mutex_lock(&watchdog_data_mutex);
kref_put(&data->kref, w83793_release_resources);
@ -1565,7 +1562,7 @@ static int w83793_remove(struct i2c_client *client)
static int
w83793_detect_subclients(struct i2c_client *client)
{
int i, id, err;
int i, id;
int address = client->addr;
u8 tmp;
struct i2c_adapter *adapter = client->adapter;
@ -1580,8 +1577,7 @@ w83793_detect_subclients(struct i2c_client *client)
"invalid subclient "
"address %d; must be 0x48-0x4f\n",
force_subclients[i]);
err = -EINVAL;
goto ERROR_SC_0;
return -EINVAL;
}
}
w83793_write_value(client, W83793_REG_I2C_SUBADDR,
@ -1591,28 +1587,21 @@ w83793_detect_subclients(struct i2c_client *client)
tmp = w83793_read_value(client, W83793_REG_I2C_SUBADDR);
if (!(tmp & 0x08))
data->lm75[0] = i2c_new_dummy(adapter, 0x48 + (tmp & 0x7));
data->lm75[0] = devm_i2c_new_dummy_device(&client->dev, adapter,
0x48 + (tmp & 0x7));
if (!(tmp & 0x80)) {
if ((data->lm75[0] != NULL)
if (!IS_ERR(data->lm75[0])
&& ((tmp & 0x7) == ((tmp >> 4) & 0x7))) {
dev_err(&client->dev,
"duplicate addresses 0x%x, "
"use force_subclients\n", data->lm75[0]->addr);
err = -ENODEV;
goto ERROR_SC_1;
return -ENODEV;
}
data->lm75[1] = i2c_new_dummy(adapter,
0x48 + ((tmp >> 4) & 0x7));
data->lm75[1] = devm_i2c_new_dummy_device(&client->dev, adapter,
0x48 + ((tmp >> 4) & 0x7));
}
return 0;
/* Undo inits in case of errors */
ERROR_SC_1:
i2c_unregister_device(data->lm75[0]);
ERROR_SC_0:
return err;
}
/* Return 0 if detection is successful, -ENODEV otherwise */
@ -1945,9 +1934,6 @@ static int w83793_probe(struct i2c_client *client,
for (i = 0; i < ARRAY_SIZE(w83793_temp); i++)
device_remove_file(dev, &w83793_temp[i].dev_attr);
i2c_unregister_device(data->lm75[0]);
i2c_unregister_device(data->lm75[1]);
free_mem:
kfree(data);
exit: