> They are handled by the irqchip mask/unmask inside
> the RTL8366RB, see:
> drivers/net/dsa/rtl8366rb.c
>
> So as soon as the phy core request the threaded IRQ
> the irqchip will deal with this business on its own.
>
> How exactly the RTL8366RB IRQ machine looks inside
> I doubt even Realtek knows themselves, but from
> my experiements, they seem all edge triggered,
> and the irq will be raised every time an edge occurse
> (such as inserting or removing the cable). The "ACK"
> happens in hardware when we read the status register
> in the nested interrupt handler in rtl8366rb_irq() so no
> further registers need to be accessed.
Hi Linus
Thanks for the explanation. So dummy functions are fine in this case.
However, in general, i don't think dummy functions will work for a PHY
driver, and may lead to interrupt storms. So it might be better to
have them in the driver, not the core, with comments about why they
are safe.
Andrew
