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intel-iommu: Don't keep freeing page zero in dma_pte_free_pagetable()
authorDavid Woodhouse <David.Woodhouse@intel.com>
Thu, 2 Jul 2009 11:02:34 +0000 (12:02 +0100)
committerDavid Woodhouse <David.Woodhouse@intel.com>
Thu, 2 Jul 2009 11:02:38 +0000 (12:02 +0100)
Check dma_pte_present() and only free the page if there _is_ one.
Kind of surprising that there was no warning about this.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

No differences found
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