From ffa952e95d8c56cd1e06bc21e3b0baf8d212fef8 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Sun, 15 May 2022 17:59:22 +0200 Subject: [PATCH] iio:adc:ina2xx: Improve error reporting for problems during .remove() MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Link: https://lore.kernel.org/r/20220515155929.338656-2-u.kleine-koenig@pengutronix.de Signed-off-by: Jonathan Cameron --- drivers/iio/adc/ina2xx-adc.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c index abad168038496..240e6c420701c 100644 --- a/drivers/iio/adc/ina2xx-adc.c +++ b/drivers/iio/adc/ina2xx-adc.c @@ -1038,12 +1038,18 @@ static int ina2xx_remove(struct i2c_client *client) { struct iio_dev *indio_dev = i2c_get_clientdata(client); struct ina2xx_chip_info *chip = iio_priv(indio_dev); + int ret; iio_device_unregister(indio_dev); /* Powerdown */ - return regmap_update_bits(chip->regmap, INA2XX_CONFIG, - INA2XX_MODE_MASK, 0); + ret = regmap_update_bits(chip->regmap, INA2XX_CONFIG, + INA2XX_MODE_MASK, 0); + if (ret) + dev_warn(&client->dev, "Failed to power down device (%pe)\n", + ERR_PTR(ret)); + + return 0; } static const struct i2c_device_id ina2xx_id[] = { -- 2.30.2