linux-kernel - [PATCH 1/3] [CPUFREQ] make ACPI P-state cpufreq drivers depend on CONFIG_CPU

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Message-ID: <20091117221120.25933.46929.stgit@bob.kio>
Date:	Tue, 17 Nov 2009 15:11:20 -0700
From:	Alex Chiang <achiang@...com>
To:	davej@...hat.com
Cc:	linux-kernel@...r.kernel.org, cpufreq@...r.kernel.org
Subject: [PATCH 1/3] [CPUFREQ] make ACPI P-state cpufreq drivers depend on
	CONFIG_CPU_FREQ

In menuconfig, if you do not select:

Power management and ACPI options ->
  CPU Frequency scaling -->
    CPU Frequency scaling

You do not get a chance to select the various CPUFreq processor drivers
either.

So, it seems reasonable to make these processor drivers:

	- powernow-k8
	- powernow-k7
	- acpi-cpufreq

depend upon CONFIG_CPU_FREQ. This change allows us to be smarter with
#ifdefs and symbols in generic ACPI header files later on.

Signed-off-by: Alex Chiang <achiang@...com>
---

 arch/x86/kernel/cpu/cpufreq/Kconfig |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/x86/kernel/cpu/cpufreq/Kconfig b/arch/x86/kernel/cpu/cpufreq/Kconfig
index f138c6c..ca40a9f 100644
--- a/arch/x86/kernel/cpu/cpufreq/Kconfig
+++ b/arch/x86/kernel/cpu/cpufreq/Kconfig
@@ -13,7 +13,7 @@ comment "CPUFreq processor drivers"
 config X86_ACPI_CPUFREQ
 	tristate "ACPI Processor P-States driver"
 	select CPU_FREQ_TABLE
-	depends on ACPI_PROCESSOR
+	depends on ACPI_PROCESSOR && CPU_FREQ
 	help
 	  This driver adds a CPUFreq driver which utilizes the ACPI
 	  Processor Performance States.
@@ -69,7 +69,7 @@ config X86_POWERNOW_K6
 config X86_POWERNOW_K7
 	tristate "AMD Mobile Athlon/Duron PowerNow!"
 	select CPU_FREQ_TABLE
-	depends on X86_32
+	depends on X86_32 && CPU_FREQ
 	help
 	  This adds the CPUFreq driver for mobile AMD K7 mobile processors.
 
@@ -87,7 +87,7 @@ config X86_POWERNOW_K7_ACPI
 config X86_POWERNOW_K8
 	tristate "AMD Opteron/Athlon64 PowerNow!"
 	select CPU_FREQ_TABLE
-	depends on ACPI && ACPI_PROCESSOR
+	depends on ACPI && ACPI_PROCESSOR && CPU_FREQ
 	help
 	  This adds the CPUFreq driver for K8/K10 Opteron/Athlon64 processors.
 

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