Re: [PATCH v2 5/5] gpio: kunit: add test cases verifying swnode devlink support

[Andy Shevchenko <andriy.shevchenko@linux.intel.com>]

On Mon, Jul 06, 2026 at 02:54:12PM +0200, Bartosz Golaszewski wrote:
> The software node fw_devlink support already has its own kunit suite, but
> that verifies the fwnode links in isolation. Add GPIO tests that prove
> the ordering works in a real-life use-case: a GPIO consumer that
> references its provider via a software node.
> 
> The first suite registers the provider's software node, adds the consumer
> device first and checks that fw_devlink defers its probe until the
> provider has been added and bound. The second covers the fallback:
> with the provider's software node not yet registered no supplier link is
> created, so the consumer probes, devm_gpiod_get() returns -EPROBE_DEFER
> and the consumer only binds once the provider shows up.
> 
> While at it: the existing gpio_unbind_with_consumers() test keeps the
> consumer bound while the provider goes away and then operates the orphaned
> descriptor. With software nodes now being covered by fw_devlink that would
> instead force-unbind the consumer along with the provider, so opt it out
> by setting FWNODE_FLAG_LINKS_ADDED.

Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>

-- 
With Best Regards,
Andy Shevchenko