linux-kernel - [PATCH] cpufreq: Change link order of x86 cpufreq modules

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Message-ID: <20090218182822.GA19902@srcf.ucam.org>
Date:	Wed, 18 Feb 2009 18:28:22 +0000
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	davej@...emonkey.org.uk
Cc:	linux-kernel@...r.kernel.org, cpufreq@...r.kernel.org
Subject: [PATCH] cpufreq: Change link order of x86 cpufreq modules

Change the link order of the cpufreq modules to ensure that they're 
probed in the preferred order when statically linked in.
    
Signed-off-by: Matthew Garrett <mjg@...hat.com>

diff --git a/arch/x86/kernel/cpu/cpufreq/Makefile b/arch/x86/kernel/cpu/cpufreq/Makefile
index 560f776..509296d 100644
--- a/arch/x86/kernel/cpu/cpufreq/Makefile
+++ b/arch/x86/kernel/cpu/cpufreq/Makefile
@@ -1,6 +1,11 @@
+# Link order matters. K8 is preferred to ACPI because of firmware bugs in early
+# K8 systems. ACPI is preferred to all other hardware-specific drivers.
+# speedstep-* is preferred over p4-clockmod.
+
+obj-$(CONFIG_X86_POWERNOW_K8)		+= powernow-k8.o
+obj-$(CONFIG_X86_ACPI_CPUFREQ)		+= acpi-cpufreq.o
 obj-$(CONFIG_X86_POWERNOW_K6)		+= powernow-k6.o
 obj-$(CONFIG_X86_POWERNOW_K7)		+= powernow-k7.o
-obj-$(CONFIG_X86_POWERNOW_K8)		+= powernow-k8.o
 obj-$(CONFIG_X86_LONGHAUL)		+= longhaul.o
 obj-$(CONFIG_X86_E_POWERSAVER)		+= e_powersaver.o
 obj-$(CONFIG_ELAN_CPUFREQ)		+= elanfreq.o
@@ -10,7 +15,6 @@ obj-$(CONFIG_X86_GX_SUSPMOD)		+= gx-suspmod.o
 obj-$(CONFIG_X86_SPEEDSTEP_ICH)		+= speedstep-ich.o
 obj-$(CONFIG_X86_SPEEDSTEP_LIB)		+= speedstep-lib.o
 obj-$(CONFIG_X86_SPEEDSTEP_SMI)		+= speedstep-smi.o
-obj-$(CONFIG_X86_ACPI_CPUFREQ)		+= acpi-cpufreq.o
 obj-$(CONFIG_X86_SPEEDSTEP_CENTRINO)	+= speedstep-centrino.o
 obj-$(CONFIG_X86_P4_CLOCKMOD)		+= p4-clockmod.o
 obj-$(CONFIG_X86_CPUFREQ_NFORCE2)	+= cpufreq-nforce2.o
-- 
Matthew Garrett | mjg59@...f.ucam.org
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