On Fri, Jul 8, 2022 at 10:52 AM Ben Dooks <ben.dooks@xxxxxxxxxx> wrote:
>
> When the irq controler code works out the heirarchy for initialialisation
> it only looks at interrupt-parent properties, but controllers such as the
> RISC-V PLIC use a extended-interrupt property and therefore do not get
> properly considered during initialisation.
>
> This means that if anything changes in the driver initialisation order
> then the PLIC can get called before the CLINT nodes, and thus interrupts
> do not get configured properly and the init continues without noticing
> the error until drivers fail due to having no interrupts delivered.
>
> Add code to the of_irq_init that checks for the extended-interrupt
> property and adds these parent nodes so that they can be considered
> during the calculations of whether an irq controller node can be
> initialised.
Isn't this already fixed by commit e91033621d56 ("of/irq: Use
interrupts-extended to find parent")?
Rob
