> > > + /* reset sensor, chip fails to respond to this, so ignore any errors */ > > + ltrf216a_reset(indio_dev); > > + > > + ret = pm_runtime_set_active(&client->dev); > > + if (ret) > > + goto error_power_down; > > Why do you need to power down here? > > > + pm_runtime_enable(&client->dev); We now have devm_pm_runtime_enable() which will also deal with disabling use_autosuspend for you and should help you sort out some of the ordering. > > + pm_runtime_set_autosuspend_delay(&client->dev, 5000); > > + pm_runtime_use_autosuspend(&client->dev); > > + > > + ltrf216a_set_power_state(data, true); > > The below code suggests that you are mixing badly devm_ with non-devm_ > APIs, don't do this. You have to group devm_ first followed by > non-devm_ calls. > > ... > > > +static int ltrf216a_remove(struct i2c_client *client) > > +{ > > + struct iio_dev *indio_dev = i2c_get_clientdata(client); > > + > > + iio_device_unregister(indio_dev); > > + pm_runtime_disable(&client->dev); > > + pm_runtime_set_suspended(&client->dev); > > + ltrf216a_disable(indio_dev); > > + > > + return 0; > > I believe the ordering of freeing resources and reverting state is not > in reverse. See above why. In particular you are calling disable there which is already handled by devm_ unwinding. > > > +} >