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SubjectRe: linux-next: build warning after merge of the arm64 tree
On Tue, Jul 24, 2018 at 09:05:45AM +1000, Stephen Rothwell wrote:
> Hi all,
>
> After merging the arm64 tree, today's linux-next build (x86_64
> allmodconfig) produced this warning:

Where can I find this specific branch?

> drivers/acpi/Kconfig:6:error: recursive dependency detected!
> drivers/acpi/Kconfig:6: symbol ACPI depends on EFI

My patch created an additional dependency like:
menu ACPI
...
depends on IA64 || X86 || (ARM64 && EFI)

> arch/x86/Kconfig:1920: symbol EFI depends on ACPI

So I don't understand why this change makes a warning on x86_64 build.
Is this a real recursive dependency?

Thanks,
-Takahiro AKASHI

> For a resolution refer to Documentation/kbuild/kconfig-language.txt
> subsection "Kconfig recursive dependency limitations"
>
> Introduced by commit
>
> 5bcd44083a08 ("drivers: acpi: add dependency of EFI for arm64")
>
> --
> Cheers,
> Stephen Rothwell


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