ASoC: cs42l51: Improve error handling in cs42l51_remove()

When disabling a regulator fails while the device goes away, there is
little we can do and the machine is probably in enough trouble that any
action we'd want to take fails anyhow.

The return value used to be passed on in cs42l51_i2c_remove() (i.e. the
i2c device remove callback). But the i2c core ignores the error code
(apart from emitting a generic warning) and removes the device anyhow.

So return 0 unconditionally in cs42l51_i2c_remove(), and instead of
returning the error code to the upper layer emit a more helpful warning
message. After that nobody is interested any more in the actual error
code, so let cs42l51_remove() return void.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20220110071832.306185-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>

1 files changed, 8 insertions, 3 deletions

diff --git a/sound/soc/codecs/cs42l51.c b/sound/soc/codecs/cs42l51.c
index c61b17dc2af8..e9c3cb4e2bfc 100644
--- a/sound/soc/codecs/cs42l51.c
+++ b/sound/soc/codecs/cs42l51.c
@@ -793,14 +793,19 @@ error:
 }
 EXPORT_SYMBOL_GPL(cs42l51_probe);
 
-int cs42l51_remove(struct device *dev)
+void cs42l51_remove(struct device *dev)
 {
 	struct cs42l51_private *cs42l51 = dev_get_drvdata(dev);
+	int ret;
 
 	gpiod_set_value_cansleep(cs42l51->reset_gpio, 1);
 
-	return regulator_bulk_disable(ARRAY_SIZE(cs42l51->supplies),
-				      cs42l51->supplies);
+	ret = regulator_bulk_disable(ARRAY_SIZE(cs42l51->supplies),
+				     cs42l51->supplies);
+	if (ret)
+		dev_warn(dev, "Failed to disable all regulators (%pe)\n",
+			 ERR_PTR(ret));
+
 }
 EXPORT_SYMBOL_GPL(cs42l51_remove);