On Thu, Aug 19, 2021 at 11:19:34PM +0300, Sakari Ailus wrote:
> Return -EPROBE_DEFER if probing the device fails because of the I²C
> transaction (-EIO only). This generally happens when the power on sequence
> of the device has not been fully performed yet due to later probing of
> other drivers.
...
> + if (ret == -EIO && is_acpi_device_node(dev_fwnode(&client->dev))) {
has_acpi_companion() is better to have here, no?
> + /*
> + * If we get -EIO here and it's an ACPI device, there's a fair
> + * likelihood it's because the drivers required to power this
> + * device on have not probed yet. Thus return -EPROBE_DEFER.
> + */
> + return -EPROBE_DEFER;
> + }
--
With Best Regards,
Andy Shevchenko
