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iio:chemical:ccs811: Improve error reporting for problems during .remove()

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Returning an error value in an i2c remove callback results in a generic
error message being emitted by the i2c core, but otherwise it doesn't
make a difference. The device goes away anyhow and the devm cleanups are
called.

So instead of triggering the generic i2c error message, emit a more
helpful message if a problem occurs and return 0 to suppress the generic
message.

This patch is a preparation for making i2c remove callbacks return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220515155929.338656-5-u.kleine-koenig@pengutronix.de
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Uwe Kleine-König 2022-05-15 17:59:25 +02:00 committed by Jonathan Cameron
parent a76209246d
commit 730cd2f54e
1 changed files with 8 additions and 2 deletions
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10
drivers/iio/chemical/ccs811.c
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@ -536,14 +536,20 @@ static int ccs811_remove(struct i2c_client *client)
{
struct iio_dev *indio_dev = i2c_get_clientdata(client);
struct ccs811_data *data = iio_priv(indio_dev);
int ret;
iio_device_unregister(indio_dev);
iio_triggered_buffer_cleanup(indio_dev);
if (data->drdy_trig)
iio_trigger_unregister(data->drdy_trig);
return i2c_smbus_write_byte_data(client, CCS811_MEAS_MODE,
CCS811_MODE_IDLE);
ret = i2c_smbus_write_byte_data(client, CCS811_MEAS_MODE,
CCS811_MODE_IDLE);
if (ret)
dev_warn(&client->dev, "Failed to power down device (%pe)\n",
ERR_PTR(ret));
return 0;
}
static const struct i2c_device_id ccs811_id[] = {