powerpc/dma: Add optional platform override of dma_set_mask()
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>
Mon, 30 Aug 2010 19:23:52 +0000 (19:23 +0000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Thu, 2 Sep 2010 04:07:32 +0000 (14:07 +1000)
Some platforms may want to override dma_set_mask() to take into
account some specific "features" such as the availability of
a direct-map window in addition to an iommu.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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