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    SubjectRe: [PATCH v5 06/27] irq_domain/powerpc: eliminate irq_map; use irq_alloc_desc() instead
    On Tue, 3 Apr 2012, Benjamin Herrenschmidt wrote:

    > On Mon, 2012-04-02 at 22:52 +0200, Thomas Gleixner wrote:
    > > > When I revert a09b659cd68c10ec6a30cb91ebd2c327fcd5bfe5 ("genirq: Fix
    > > > long-term regression in genirq irq_set_irq_type() handling") on top
    > > of
    > > > 3.4-rc1 the sata irq errors disappear, but I see a lot of spurious
    > >
    > > Hmm. Which irq chip is handling the interrupt for that sata irq ?
    > MPIC. The irq is a PCI IRQ, and so should be level-low, it should have
    > been mapped by the PCI code using the of_* calls.

    So it's covered by this section:


    if (flow_type == IRQ_TYPE_NONE)
    if (mpic->senses && src < mpic->senses_count)
    flow_type = mpic->senses[src];
    if (flow_type == IRQ_TYPE_NONE)
    flow_type = IRQ_TYPE_LEVEL_LOW;

    And with IRQ_TYPE_NONE this is always going to end up with
    IRQ_TYPE_LEVEL_LOW simply because the only function which might set
    mpic->senses is mpic_set_default_senses(). And this function does not
    have a single caller .....

    /me scratches head

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      Last update: 2012-04-02 23:29    [W:0.022 / U:13.472 seconds]
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