From mboxrd@z Thu Jan  1 00:00:00 1970
From: rjw@rjwysocki.net (Rafael J. Wysocki)
Date: Wed, 11 May 2016 02:07:38 +0200
Subject: [PATCH v4 4/5] arm64: add support for ACPI Low Power Idle(LPI)
In-Reply-To: <1461069013-13292-5-git-send-email-sudeep.holla@arm.com>
References: <1461069013-13292-1-git-send-email-sudeep.holla@arm.com>
 <1461069013-13292-5-git-send-email-sudeep.holla@arm.com>
Message-ID: <3620725.8soc3SaFWB@vostro.rjw.lan>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

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