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    SubjectRe: [PATCH v5 06/27] irq_domain/powerpc: eliminate irq_map; use irq_alloc_desc() instead
    On Sun, 2012-04-01 at 23:27 +0200, Andreas Schwab wrote:
    > Grant Likely <> writes:
    > > This patch drops the powerpc-specific irq_map table and replaces it with
    > > directly using the irq_alloc_desc()/irq_free_desc() interfaces for allocating
    > > and freeing irq_desc structures.
    > This breaks irqs on PowerMac G5. I see lost irq errors from the sata
    > driver.
    > Note that the breakage only started after the series was merged into
    > mainline. But when transplanted upon the parent of the merge this is
    > the commit that was blamed by bisect. So something changed between
    > v3.3-rc3 and the merge of this series that broke it.

    can you tell me more ? (What machine precisely, what .config etc...) ?

    I tested here on two G5's:

    - PowerMac7,3 aka Dual G5 AGP. This ones has U3 + K2 and
    uses cascaded MPICs

    - PowerMac11,2 aka Quad G5. This one has U4 + K2 and uses a single MPIC
    in the northbridge

    And both appear to work fine with today upstream (basically -rc1).


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