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    ARM64/irqchip: Update ACPI_IORT symbol selection logic · c6bb8f89
    Lorenzo Pieralisi 提交于
    ACPI IORT is an ACPI addendum to describe the connection topology of
    devices with IOMMUs and interrupt controllers on ARM64 ACPI systems.
    
    Currently the ACPI IORT Kbuild symbol is selected whenever the Kbuild
    symbol ARM_GIC_V3_ITS is enabled, which in turn is selected by ARM64
    Kbuild defaults. This makes the logic behind ACPI_IORT selection a bit
    twisted and not easy to follow. On ARM64 systems enabling ACPI the
    kbuild symbol ACPI_IORT should always be selected in that it is a kernel
    layer provided to the ARM64 arch code to parse and enable ACPI firmware
    bindings.
    
    Make the ACPI_IORT selection explicit in ARM64 Kbuild and remove the
    selection from ARM_GIC_V3_ITS entry, making the ACPI_IORT selection
    logic clearer to follow.
    Acked-by: NHanjun Guo <hanjun.guo@linaro.org>
    Signed-off-by: NLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
    Cc: Will Deacon <will.deacon@arm.com>
    Cc: Hanjun Guo <hanjun.guo@linaro.org>
    Cc: Catalin Marinas <catalin.marinas@arm.com>
    Cc: Marc Zyngier <marc.zyngier@arm.com>
    Signed-off-by: NWill Deacon <will.deacon@arm.com>
    c6bb8f89
Kconfig 33.3 KB