On Sat, Jan 9, 2021 at 6:24 PM kernel test robot <lkp@intel.com> wrote:

>  > 880          gpioirq->parent_domain = NULL;

The autobuilder is complaining because your irq chip is not
hierarchical and this is only used for hierarchical irqchips.
I think you can just delete this line.

Yours,
Linus Walleij