[rtl] A Challenging IRQ problem! How to?

My PCI card has two ports. You know they should share the irq

and ISR in its RTLinux driver and just can use rtl_request_irq once.

Each port has diffirent kernel space for data to store.

now I want the ISR to know which port produced the interrupt.

so that the data can be put into the right space.

Also I can access both in one module.

orelse I just can access the fixed port use my driver.

I want to make it more general and useful.

I have one idea that to justify each kernel buffer to see

if it is empty or not first. But I think it is a stupid method.

so does anyone have some creative idea?

Thanks.

Liu

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