R: How to avoid serial port buffer overruns?

[Giampaolo Tomassoni]

> OK, thanks.  FWIW here is the serial board we are using:
> 
> http://www.moschip.com/html/MCS9845.html
> 
> The hardware guy says "The mn9845cv, have in default 2 serial ports and
> one ISA bus, where we have connected the tl16c554, quad serial port."
> 
> Hopefully Ingo's latency tracer can tell me what is holding off
> interrupts.

That may be an interrupt-sharing issue: quad port often use at most two irq lines and, FWIK, ISA irqs are edge-triggered, not level-triggered. Are you tring to use two MIDI ports at the same time?

Giampaolo

> 
> Lee
> 
> 
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at  http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at  http://www.tux.org/lkml/

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/