Re: [PATCH 00/34] AMD IOMMU driver

[Ingo Molnar]

-tip testing found a build failure with:

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

  http://redhat.com/~mingo/misc/config-Fri_Jun_27_10_29_06_CEST_2008.bad

this is due to !CONFIG_ACPI.

since AMD IOMMU discovery depends on ACPI anyway, i've fixed this in the 
Kconfig space. (Eventually, if you want to make it directly discoverable 
via the PCI space in the future, you might want to fix this dependency.)

i've pushed out the fix below into -tip.

	Ingo
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