[PATCH v2] iio: imu: inv_icm45600: fix regulator put warning when probe fails

[Jean-Baptiste Maneyrol via B4 Relay]

From: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@xxxxxxx>

When the driver probe fails we encounter a regulator put warning
because vddio regulator is not stopped before release. The issue
comes from pm_runtime not already setup when core probe fails and
the vddio regulator disable callback is called.

Fix the issue by setting pm_runtime active early before vddio
regulator resource cleanup. This requires to cut pm_runtime
set_active and enable in 2 function calls.

Fixes: 7ff021a3faca ("iio: imu: inv_icm45600: add new inv_icm45600 driver")
Signed-off-by: Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@xxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
---
Changes in v2:
- Rework patch to move pm_runtime set active early.
- Requires to cut pm_runtime set active and enable in 2 functions.
- Link to v1: https://lore.kernel.org/r/20260205-inv-icm45600-fix-regulator-put-warning-v1-1-314ec12512cb@xxxxxxx
---
 drivers/iio/imu/inv_icm45600/inv_icm45600_core.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/imu/inv_icm45600/inv_icm45600_core.c b/drivers/iio/imu/inv_icm45600/inv_icm45600_core.c
index ab1cb7b9dba435a3280e50ab77cd16e903c7816c..811ff80a2e626b4c2bb7b718899abe77488c7745 100644
--- a/drivers/iio/imu/inv_icm45600/inv_icm45600_core.c
+++ b/drivers/iio/imu/inv_icm45600/inv_icm45600_core.c
@@ -744,6 +744,11 @@ int inv_icm45600_core_probe(struct regmap *regmap, const struct inv_icm45600_chi
 	 */
 	fsleep(5 * USEC_PER_MSEC);
 
+	/* set pm_runtime active early for disable vddio resource cleanup */
+	ret = pm_runtime_set_active(dev);
+	if (ret)
+		return ret;
+
 	ret = inv_icm45600_enable_regulator_vddio(st);
 	if (ret)
 		return ret;
@@ -776,7 +781,7 @@ int inv_icm45600_core_probe(struct regmap *regmap, const struct inv_icm45600_chi
 	if (ret)
 		return ret;
 
-	ret = devm_pm_runtime_set_active_enabled(dev);
+	ret = devm_pm_runtime_enable(dev);
 	if (ret)
 		return ret;
 

---
base-commit: d820183f371d9aa8517a1cd21fe6edacf0f94b7f
change-id: 20260205-inv-icm45600-fix-regulator-put-warning-7c45a49c4c53

Best regards,
-- 
Jean-Baptiste Maneyrol <jean-baptiste.maneyrol@xxxxxxx>