tree c1a2436a7f8c7b61a09ab1b809f65bd5b1325ccc
parent cfc65dd57967f2e0c7b3a8b73e6d12470b1cf1c1
author David Woodhouse <David.Woodhouse@intel.com> 1249373840 +0100
committer David Woodhouse <David.Woodhouse@intel.com> 1249373844 +0100

intel-iommu: Cope with broken HP DC7900 BIOS

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>