Thread (5 messages) 5 messages, 3 authors, 2018-07-24

[PATCH] arm64: fix ACPI dependencies

From: rafael@kernel.org (Rafael J. Wysocki)
Date: 2018-07-24 09:37:14
Also in: linux-acpi, lkml

On Tue, Jul 24, 2018 at 11:33 AM, Arnd Bergmann [off-list ref] wrote:
quoted hunk ↗ jump to hunk
Kconfig reports a warning on x86 builds after the ARM64 dependency
was added.

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

This rephrases the dependency to keep the ARM64 details out of the
shared Kconfig file, so Kconfig no longer gets confused by it.

Fixes: 5bcd44083a08 ("drivers: acpi: add dependency of EFI for arm64")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 arch/arm64/Kconfig   | 1 +
 drivers/acpi/Kconfig | 5 ++++-
 2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index cdcaa6a798b2..2f987a938405 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -1267,6 +1267,7 @@ config EFI
        bool "UEFI runtime support"
        depends on OF && !CPU_BIG_ENDIAN
        depends on KERNEL_MODE_NEON
+       select ARCH_SUPPORTS_ACPI
        select LIBFDT
        select UCS2_STRING
        select EFI_PARAMS_FROM_FDT
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig
index a8da730fabc6..0cda51c5d433 100644
--- a/drivers/acpi/Kconfig
+++ b/drivers/acpi/Kconfig
@@ -6,7 +6,7 @@
 menuconfig ACPI
        bool "ACPI (Advanced Configuration and Power Interface) Support"
        depends on !IA64_HP_SIM
-       depends on IA64 || X86 || (ARM64 && EFI)
+       depends on IA64 || X86 || ARCH_SUPPORTS_ACPI
That doesn't look particularly consistent to me.

It should be either "depends on ARCH_SUPPORTS_ACPI" alone or mention
ARM64 somehow IMO
quoted hunk ↗ jump to hunk
        depends on PCI
        select PNP
        default y if (IA64 || X86)
@@ -41,6 +41,9 @@ menuconfig ACPI
          <http://www.acpi.info>
          <http://www.uefi.org/acpi/specs>

+config ARCH_SUPPORTS_ACPI
+       bool
+
 if ACPI

 config ACPI_LEGACY_TABLES_LOOKUP
--
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