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    Subject[PATCH] parisc: fix longstanding build failure on prefetch
    Date
    Upstream commit e66eed651fd18a961f11cda62f3b5286c8cc4f9f

    "list: remove prefetching from regular list iterators"

    removed <linux/prefetch.h> from <linux/list.h> very early in the
    v3.0 dev cycle (v2.6.39-2-ge66eed6), thereby causing build failures
    when it exposed the implicit prefetch users in parisc.

    Reported-by: David Rientjes <rientjes@google.com>
    Reported-by: WANG Cong <xiyou.wangcong@gmail.com>
    Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
    ---

    [ The parisc defconfig has been failing to build everywhere since
    last May! http://kisskb.ellerman.id.au/kisskb/target/2059/ And this
    one liner fix https://lkml.org/lkml/2011/10/15/121 was reported last
    Oct, and again http://www.spinics.net/lists/linux-parisc/msg03945.html
    in early Feb. So, now with a clear reasoning in the commit header as
    to why it fails, can we finally get this in tree please? ]

    diff --git a/drivers/parisc/iommu-helpers.h b/drivers/parisc/iommu-helpers.h
    index a9c46cc..8c33491 100644
    --- a/drivers/parisc/iommu-helpers.h
    +++ b/drivers/parisc/iommu-helpers.h
    @@ -1,3 +1,5 @@
    +#include <linux/prefetch.h>
    +
    /**
    * iommu_fill_pdir - Insert coalesced scatter/gather chunks into the I/O Pdir.
    * @ioc: The I/O Controller.
    --
    1.7.9.1


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