Re: OMAP4430 SDP with KS8851: very slow networking

* Russell King - ARM Linux [off-list ref] [181207 19:27]:

You mentioned that edge mode didn't work as well as level mode on
duovero smsc controller, I think this may help to solve the same
issue but for edge IRQs - we need a mask_ack_irq function to avoid
acking while the edge interrupt is masked.  Let me know if that
lowers the smsc ping latency while in edge mode.

Looks like smsc edge interrupt is still producing varying
ping latencies with this. Seems like the mas_ack_irq is
a nice improvment though.

Regards,

Tony