[PATCH] iio: light: gp2ap002: Disable regulators on resume failure

[Laxman Acharya Padhya]

If enabling VIO fails after VDD has been enabled, runtime resume
returns without disabling VDD. Likewise, if device reinitialization
fails, both supplies remain enabled. The runtime PM core keeps the
device suspended when its resume callback fails, so the supplies must
be restored to the suspended state.

Disable the supplies enabled by the callback before returning an error.

Fixes: 97d642e23037 ("iio: light: Add a driver for Sharp GP2AP002x00F")
Assisted-by: Codex:gpt-5
Signed-off-by: Laxman Acharya Padhya <acharyalaxman8848@xxxxxxxxx>
---
 drivers/iio/light/gp2ap002.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/light/gp2ap002.c b/drivers/iio/light/gp2ap002.c
index c83f67f..efef332 100644
--- a/drivers/iio/light/gp2ap002.c
+++ b/drivers/iio/light/gp2ap002.c
@@ -669,7 +669,7 @@ static int gp2ap002_runtime_resume(struct device *dev)
 	ret = regulator_enable(gp2ap002->vio);
 	if (ret) {
 		dev_err(dev, "failed to enable VIO regulator in resume path\n");
-		return ret;
+		goto out_disable_vdd;
 	}
 
 	msleep(20);
@@ -677,13 +677,19 @@ static int gp2ap002_runtime_resume(struct device *dev)
 	ret = gp2ap002_init(gp2ap002);
 	if (ret) {
 		dev_err(dev, "re-initialization failed\n");
-		return ret;
+		goto out_disable_vio;
 	}
 
 	/* Re-activate the IRQ */
 	enable_irq(gp2ap002->irq);
 
 	return 0;
+
+out_disable_vio:
+	regulator_disable(gp2ap002->vio);
+out_disable_vdd:
+	regulator_disable(gp2ap002->vdd);
+	return ret;
 }
 
 static DEFINE_RUNTIME_DEV_PM_OPS(gp2ap002_dev_pm_ops, gp2ap002_runtime_suspend,
-- 
2.51.2