Re: [rtl] RTLinux not unmasking XT-PIC interrupt 9

[Michael Barabanov <baraban@fsmlabs.com>]

David Schleef (ds@stm.lbl.gov) wrote:
> 
> I'm observing that beta11 is not unmasking IRQ 9 after the
> RT interrupt is serviced.  This is on a UP pentium 90, and
> the card is a PCI 3c905b, with level triggered interrupts,
> at least, when it is connected to an IO-APIC.  The observation
> is that printing inb([0x20,0x21,0xa0,0xa1]) shows that
> irq 9 is masked, and also pending.
> 
> It works perfectly well when using a regular interrupt.

That's the expected behaviour. You have to explicitely call
rtl_enable_hard_irq from the handler.

Michael.
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