From: David Woodhouse <David.Woodhouse@intel.com>
Date: Thu, 2 Jul 2009 11:02:34 +0000 (+0100)
Subject: intel-iommu: Don't keep freeing page zero in dma_pte_free_pagetable()
X-Git-Tag: v2.6.31-rc2~12^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=6a43e574c5af7d9bd084992b1c9c3cdbc3b6c0e9;p=pandora-kernel.git

intel-iommu: Don't keep freeing page zero in dma_pte_free_pagetable()

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>
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