On Thu, 2023-07-13 at 15:27 +0200, Jan Beulich wrote: > I don't understand. My earlier comment was affecting all checks of > uart->irq alike, as I'm unconvinced IRQ0 may not possibly be usable > on some architecture / platform. IOW I don't see why the check in > ns16550_init_postirq() would allow us any leeway. It looks like I misunderstood you.
Do you mean that on some architecture IRQ0 may be used for ns16550? If yes, the code inside ns16550_init_postirq() will ignore that fact and use polling mode. ~ Oleksii
