[lkml]   [2012]   [May]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: [PATCH] Fix compile failure on PA-RISC
    On Sat, 5 May 2012, Linus Torvalds wrote:

    > On Sat, May 5, 2012 at 11:53 AM, Mikulas Patocka <> wrote:
    > >
    > > What NO_IRQ problem do you mean? There is
    > > #define NO_IRQ          (-1)
    > > in arch/parisc/include/asm/irq.h.
    > That's the one he means.
    > Switching it to zero and testing that things still work would be appreciated.

    It works, but there is plenty of interrupt controllers on PC-RISC and I
    can only test it on C8000 with IO-SAPIC. I don't know if irq 0 is used on
    some PA-RISC interrupt controller. It would be best if James Bottomley
    tests it on his set of machines.

    > Much code already knows that NO_IRQ is supposed to be zero, and
    > there's tons of drivers that just do the (correct!) "if (!dev->irq)"
    > kind of thing.
    > Any architecture that has a non-zero NO_IRQ is basically broken.
    > Always has been.
    > Linus

    And what about x86? --- irq 0 is used for timer and there is
    void __init setup_default_timer_irq(void)
    setup_irq(0, &irq0);
    in arch/x86/kernel/time.c.

     \ /
      Last update: 2012-05-09 06:01    [W:0.023 / U:0.164 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site