x86, AMD IOMMU: build fix

fix:

 arch/x86/kernel/amd_iommu_init.c:247: warning: 'struct acpi_table_header' declared inside parameter list
 arch/x86/kernel/amd_iommu_init.c:247: warning: its scope is only this definition or declaration, which is probably not what you want
 arch/x86/kernel/amd_iommu_init.c: In function 'find_last_devid_acpi':
 arch/x86/kernel/amd_iommu_init.c:257: error: dereferencing pointer to incomplete type
 arch/x86/kernel/amd_iommu_init.c:265: error: dereferencing pointer to incomplete type

the AMD IOMMU code depends on ACPI facilities.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5a82f18ab5ed..62a2820297b1 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -552,7 +552,7 @@ config CALGARY_IOMMU_ENABLED_BY_DEFAULT
 config AMD_IOMMU
         bool "AMD IOMMU support"
         select SWIOTL
-        depends on X86_64 && PCI
+        depends on X86_64 && PCI && ACPI
         help
           Select this to get support for AMD IOMMU hardware in your system.