On Mon, Aug 23, 2021 at 1:22 PM Alexandru Ardelean
[off-list ref] wrote:

This change converts the st_sensors_power_enable() function to use
devm_add_action_or_reset() handlers to register regulator_disable hooks for
when the drivers get unloaded.

The parent device of the IIO device object is used. This is based on the
assumption that all other devm_ calls in the ST sensors use this reference.

This makes the st_sensors_power_disable() un-needed.
Removing this also changes unload order a bit, as all ST drivers would call
st_sensors_power_disable() first and iio_device_unregister() after that.

Reviewed-by: Andy Shevchenko <redacted>
Signed-off-by: Alexandru Ardelean <redacted>

Reviewed-by: Linus Walleij <redacted>

We should at some point add proper runtime PM to the ST sensors
(cf drivers/iio/gyro/mpu3050-core.c) but that can certainly be built
on top of this patch.

Yours,
Linus Walleij