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    SubjectRe: [patch] parisc, iommu: add missing include for prefetchw()
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    On Sat, 2011-10-15 at 15:38 -0700, David Rientjes wrote:
    > prefetchw() requires it to be defined by linux/prefetch.h, or it results
    > in a compile error:
    >
    > In file included from drivers/parisc/sba_iommu.c:916:0:
    > drivers/parisc/iommu-helpers.h: In function 'iommu_fill_pdir':
    > drivers/parisc/iommu-helpers.h:62:4: error: implicit declaration of function 'prefetchw'
    >
    > Include linux/prefetch.h.

    This isn't physically possible on the parisc platform: prefetch.h is
    included by processor.h which, amongst other things, goes into
    spinlock.h which is above this file in sba_iommu.c

    How did you try to compile this file?

    James




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