[PATCH -next] powernow-k8: fix build errors

[Randy Dunlap]

From: Randy Dunlap <randy.dunlap@xxxxxxxxxx>

Fix build when CONFIG_X86_POWERNOW_K8_ACPI=n:
(seems that someone forgot to test this build combo)
(fix 25 of 50 randconfig build errors)

linux-next-20080808/arch/x86/kernel/cpu/cpufreq/powernow-k8.c:1334: error: implicit declaration of function 'powernow_k8_cpu_preinit_acpi'
linux-next-20080808/arch/x86/kernel/cpu/cpufreq/powernow-k8.c:1352: error: 'acpi_perf_data' undeclared (first use in this function)

Signed-off-by: Randy Dunlap <randy.dunlap@xxxxxxxxxx>
---
 arch/x86/kernel/cpu/cpufreq/powernow-k8.c |    4 ++++
 1 file changed, 4 insertions(+)

--- linux-next-20080808.orig/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ linux-next-20080808/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -1331,7 +1331,9 @@ static int __cpuinit powernowk8_init(voi
 	}
 
 	if (supported_cpus == num_online_cpus()) {
+#ifdef CONFIG_X86_POWERNOW_K8_ACPI
 		powernow_k8_cpu_preinit_acpi();
+#endif
 		printk(KERN_INFO PFX "Found %d %s "
 			"processors (%d cpu cores) (" VERSION ")\n",
 			num_online_nodes(),
@@ -1349,7 +1351,9 @@ static void __exit powernowk8_exit(void)
 
 	cpufreq_unregister_driver(&cpufreq_amd64_driver);
 
+#ifdef CONFIG_X86_POWERNOW_K8_ACPI
 	free_percpu(acpi_perf_data);
+#endif
 }
 
 MODULE_AUTHOR("Paul Devriendt <paul.devriendt@xxxxxxx> and Mark Langsdorf <mark.langsdorf@xxxxxxx>");
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