[PATCH v4 4/5] arm64: add support for ACPI Low Power Idle(LPI)

On Tuesday, April 19, 2016 01:30:12 PM Sudeep Holla wrote:

This patch adds appropriate callbacks to support ACPI Low Power Idle
(LPI) on ARM64.

It also selects ARCH_SUPPORTS_ACPI_PROCESSOR_LPI if ACPI is enabled
on ARM64.

Can you remind me why we need the ARCH_SUPPORTS_ACPI_PROCESSOR_LPI thing in
addition to the previously defined ARCH_SUPPORTS_ACPI_PROCESSOR_CSTATE?

I thought supporting LPI would not require an arch Kconfig option.

Thanks,
Rafael