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media: i2c: imx214: Rectify probe error handling related to runtime PM

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commit ccc888d1698b6f42d52ddf5cecfe50fe925c95e5 upstream.

There were multiple issues in the driver's probe function related to
error handling:

- Device's PM runtime status wasn't reverted to suspended on some errors
  in probe.

- Runtime PM was left enabled for the device on some probe errors.

- Device was left powered on if a probe failure happened or when it
  was removed when it was powered on.

- An extra pm_runtime_set_suspended() was issued in driver's remove
  function when the device was suspended.

Fix these bugs.

Fixes: 4361905962 ("media: imx214: Add imx214 camera sensor driver")
Cc: stable@vger.kernel.org # for >= v6.12
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: André Apitzsch <git@apitzsch.eu>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sakari Ailus
2025-01-10 14:36:01 +02:00
committed by Greg Kroah-Hartman
parent 8dd2d1561c
commit 6f77a6d2ea
1 changed files with 15 additions and 9 deletions
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24
drivers/media/i2c/imx214.c
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@@ -1075,10 +1075,6 @@ static int imx214_probe(struct i2c_client *client)
*/
imx214_power_on(imx214->dev);
pm_runtime_set_active(imx214->dev);
pm_runtime_enable(imx214->dev);
pm_runtime_idle(imx214->dev);
ret = imx214_ctrls_init(imx214);
if (ret < 0)
goto error_power_off;
@@ -1099,21 +1095,30 @@ static int imx214_probe(struct i2c_client *client)
imx214_entity_init_state(&imx214->sd, NULL);
pm_runtime_set_active(imx214->dev);
pm_runtime_enable(imx214->dev);
ret = v4l2_async_register_subdev_sensor(&imx214->sd);
if (ret < 0) {
dev_err(dev, "could not register v4l2 device\n");
goto free_entity;
}
pm_runtime_idle(imx214->dev);
return 0;
free_entity:
pm_runtime_disable(imx214->dev);
pm_runtime_set_suspended(&client->dev);
media_entity_cleanup(&imx214->sd.entity);
free_ctrl:
mutex_destroy(&imx214->mutex);
v4l2_ctrl_handler_free(&imx214->ctrls);
error_power_off:
pm_runtime_disable(imx214->dev);
imx214_power_off(imx214->dev);
return ret;
}
@@ -1126,11 +1131,12 @@ static void imx214_remove(struct i2c_client *client)
v4l2_async_unregister_subdev(&imx214->sd);
media_entity_cleanup(&imx214->sd.entity);
v4l2_ctrl_handler_free(&imx214->ctrls);
pm_runtime_disable(&client->dev);
pm_runtime_set_suspended(&client->dev);
mutex_destroy(&imx214->mutex);
pm_runtime_disable(&client->dev);
if (!pm_runtime_status_suspended(&client->dev)) {
imx214_power_off(imx214->dev);
pm_runtime_set_suspended(&client->dev);
}
}
static const struct of_device_id imx214_of_match[] = {