[Ma-linux] ITE IT8874F Rev. 1 dual-port PCI serial card

[Stephen Cicirelli]

Just a thought, maybe if you tell the BIOS the system is using a non-plug
and play OS it will (in the course of managing the hardware for the OS)
assign different IRQs to the separate serial ports.

-Stephen

On Thu, Jun 4, 2009 at 7:40 PM, Fred Ringwald <fred at ringwald.org> wrote:

> Hello,
>
>
> I am trying to add two more serial ports to my linux testing system.  I
> have /dev/ttyS0 working provided onboard the ASRock motherboard.  I have
> installed the Integrated Technology Express, Inc. IT8874F, Revision 1,
> PCI dual-port PCI serial card to my system.
>
>
> The kernel finds the card, calls the two ports /dev/ttyS1 and /dev/ttyS2
> and assigns nonstandard IO port address to the card, and reports that
> IRQ 17 is assigned to both ports.
>
>
> Statserial, setserial, and lspci -vv all agree on what the kernel
> assigned.  However, /proc/irq does not report that IRQ 17 is associated
> with the serial kernel driver.
>
>
> When I try to use one of these ports using minicom, the kernel syslog
> reports:
>
>
> Disabling IRQ 17 nobody cared, try booting with irqpoll option.
>
>
> Does anyone have ideas on how I can persuade my system to work with this
> unusual card?
>
>
> Thank you,
>
>
> Fred Ringwald
>
> New Haven, NY
>
>
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