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    SubjectRe: 2.2.15 driver OK on UP - no ints on SMP (SOLVED)
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    > So how can my driver my driver work fine in UP and not in SMP when
    > using the pci_read_config* calls?
    >
    > My workaround is to use
    > struct pci_dev *dev;
    > and when pci_find_device() inits dev, I use dev->irq instead of
    > pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
    >
    > Can anyone explain this?

    On an SMP machine PCI interrupts are APIC routed and tend to appear higher
    than 16. The value in the PCI_INTERRUPT_LINE isnt what you need to know as
    it is before the apic directs it. dev->irq is adjusted automatically for you
    by the OS


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