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SubjectRe: [PATCH RESEND 3/3] hwmon: w83793d: convert to use devm_i2c_new_dummy_device
On Tue, Sep 03, 2019 at 08:12:56PM +0200, Wolfram Sang wrote:
> And simplify the error handling.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>

Applied to hwmon-next.

Thanks,
Guenter

> ---
> drivers/hwmon/w83793.c | 30 ++++++++----------------------
> 1 file changed, 8 insertions(+), 22 deletions(-)
>
> diff --git a/drivers/hwmon/w83793.c b/drivers/hwmon/w83793.c
> index 46f5dfec8d0a..9df48b70c70c 100644
> --- a/drivers/hwmon/w83793.c
> +++ b/drivers/hwmon/w83793.c
> @@ -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:
> --
> 2.20.1
>

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