intel-iommu: Cope with broken HP DC7900 BIOS

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Yet another reason why trusting this stuff to the BIOS was a bad idea.
The HP DC7900 BIOS reports an iommu at an address which just returns all
ones, when VT-d is disabled in the BIOS.

Fix up the missing iounmap in the error paths while we're at it.

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

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This commit is contained in:

David Woodhouse 2009-08-04 09:17:20 +01:00

parent cfc65dd579

commit 0815565adf

1 changed files with 18 additions and 4 deletions

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drivers/pci/dmar.c

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