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[4/8] iio:chemical:ccs811: Improve error reporting for problems during .remove()

Message ID 20220515155929.338656-5-u.kleine-koenig@pengutronix.de (mailing list archive)
State Accepted
Headers show
Series iio: Improve error reporting for problems during .remove for various i2c drivers | expand

Commit Message

Uwe Kleine-König May 15, 2022, 3:59 p.m. UTC
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

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

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

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
 drivers/iio/chemical/ccs811.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)
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diff --git a/drivers/iio/chemical/ccs811.c b/drivers/iio/chemical/ccs811.c
index 847194fa1e46..c38093e24fca 100644
--- a/drivers/iio/chemical/ccs811.c
+++ b/drivers/iio/chemical/ccs811.c
@@ -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;
 	if (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[] = {