x86, AMD IOMMU: don't try to init IOMMU if early detect code did not detect one

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This patch adds a check if the early detect code has found AMD IOMMU hardware
descriptions and does not try to initialize hardware if the check failed.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: iommu@lists.linux-foundation.org
Cc: bhavna.sarathy@amd.com
Cc: robert.richter@amd.com
Cc: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

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Joerg Roedel 2008-07-03 19:35:10 +02:00 • committed by Ingo Molnar

parent 8b14518fad

commit c1cbebeec4

1 changed files with 6 additions and 0 deletions

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arch/x86/kernel/amd_iommu_init.c

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