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    SubjectRe: [PATCH] pata_of_platform: fix no irq handling
    Tejun Heo wrote:
    > Anton Vorontsov wrote:
    >> On Mon, Oct 06, 2008 at 03:41:19PM -0500, Matt Sealey wrote:
    >>> There is a simple problem with the patch which is that an "IRQ 0" can and does
    >>> actually exist on a bunch of platforms, at least to the best of my knowledge.
    >>>
    >>> Checking for -1 (which means for definite, no irq at all, because it is
    >>> totally unambiguous, as a -1 IRQ numbering is "impossible") is more correct.
    >> This was discussed years ago.
    >>
    >> http://lkml.org/lkml/2005/11/22/159
    >> http://lkml.org/lkml/2005/11/22/227
    >>
    >
    > Would this break any existing platforms? If so, can those be fixed
    > together or does it become a much bigger problem that way?
    >

    Pata_of_platform stacks upon pata_platform. This patch fixes problem
    concerning definition of "no irq" without touch any other place. So
    far I can't see any new problem.


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