diff mbox series

[v4,08/32] media: ov2680: Fix regulators being left enabled on ov2680_power_on() errors

Message ID 20230802173046.368434-9-hdegoede@redhat.com
State Accepted
Commit 84b4bd7e0d98166aa32fd470e672721190492eae
Headers show
Series media: ov2680: Bugfixes + ACPI + selection(crop-tgt) API support | expand

Commit Message

Hans de Goede Aug. 2, 2023, 5:30 p.m. UTC 
When the ov2680_power_on() "sensor soft reset failed" path is hit during
probe() the WARN() about putting an enabled regulator at
drivers/regulator/core.c:2398 triggers 3 times (once for each regulator),
filling dmesg with backtraces.

Fix this by properly disabling the regulators on ov2680_power_on() errors.

Fixes: 3ee47cad3e69 ("media: ov2680: Add Omnivision OV2680 sensor driver")
Reviewed-by: Daniel Scally <dan.scally@ideasonboard.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
---
 drivers/media/i2c/ov2680.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/drivers/media/i2c/ov2680.c b/drivers/media/i2c/ov2680.c
index e3652b5394c4..1f923acbbc07 100644
--- a/drivers/media/i2c/ov2680.c
+++ b/drivers/media/i2c/ov2680.c
@@ -475,7 +475,7 @@  static int ov2680_power_on(struct ov2680_dev *sensor)
 		ret = ov2680_write_reg(sensor, OV2680_REG_SOFT_RESET, 0x01);
 		if (ret != 0) {
 			dev_err(dev, "sensor soft reset failed\n");
-			return ret;
+			goto err_disable_regulators;
 		}
 		usleep_range(1000, 2000);
 	} else {
@@ -485,7 +485,7 @@  static int ov2680_power_on(struct ov2680_dev *sensor)
 
 	ret = clk_prepare_enable(sensor->xvclk);
 	if (ret < 0)
-		return ret;
+		goto err_disable_regulators;
 
 	sensor->is_enabled = true;
 
@@ -495,6 +495,10 @@  static int ov2680_power_on(struct ov2680_dev *sensor)
 	ov2680_stream_disable(sensor);
 
 	return 0;
+
+err_disable_regulators:
+	regulator_bulk_disable(OV2680_NUM_SUPPLIES, sensor->supplies);
+	return ret;
 }
 
 static int ov2680_s_power(struct v4l2_subdev *sd, int on)