linux-kernel - [PATCH] Disable PowerMac cpufreq on SMP kernels

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Message-ID: <20090811093931.GA15940@wavehammer.waldi.eu.org>
Date:	Tue, 11 Aug 2009 11:39:31 +0200
From:	Bastian Blank <bastian@...di.eu.org>
To:	linuxppc-dev@...abs.org, linux-kernel@...r.kernel.org,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: [PATCH] Disable PowerMac cpufreq on SMP kernels

The build of a PowerMac 32bit kernel currently fails with

error: #warning "WARNING, CPUFREQ not recommended on SMP kernels"

This patch just disables this driver on SMP kernels, as it is obviously
not supported.

Signed-off-by: Bastian Blank <waldi@...ian.org>

diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index 04a8061..99d3564 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -149,7 +149,7 @@ menu "CPU Frequency drivers"
 
 config CPU_FREQ_PMAC
 	bool "Support for Apple PowerBooks"
-	depends on ADB_PMU && PPC32
+	depends on ADB_PMU && PPC32 && !SMP
 	select CPU_FREQ_TABLE
 	help
 	  This adds support for frequency switching on Apple PowerBooks,
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