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    SubjectRe: [PATCH 1/4] Blackfin: arch patch for 2.6.18
    Date
    On Thursday 28 September 2006 13:39, Bernd Schmidt wrote:
    >
    > > Shouldn't you just use a constant expression here? A global variable
    > > for it sounds rather strange, especially since the local_irq_disable()
    > > calls are sometimes nested, not to mention the problems you'd hit on
    > > SMP?
    >
    > It's not a constant - there are some {un,}mask_irq functions that may
    > change it.  We don't have SMP, obviously it would have to be per-CPU if
    > we did.
    >
    Ok, got it now. I did not realize that you use the same register
    for global irq enable and for specific interrupts that can be masked.

    Arnd <><
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