[CPUFREQ] Handle CPUs with different capabilities in acpi-cpufreq

acpi-cpufreq checks each CPU for aperf/mperf support, but only sets a global flag. This will cause errors if some CPUs in the system don't support the feature. Check boot_cpu_has() instead in order to make sure that all CPUs support it. Signed-off-by: Matthew Garrett <[email protected]> Signed-off-by: Dave Jones <[email protected]>
yshchan · Jul 13, 2011 · 92e03c4 · 92e03c4
1 parent 8d86e5f
commit 92e03c4
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/cpufreq/acpi-cpufreq.c b/drivers/cpufreq/acpi-cpufreq.c
@@ -655,7 +655,7 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
 	acpi_processor_notify_smm(THIS_MODULE);
 
 	/* Check for APERF/MPERF support in hardware */
-	if (cpu_has(c, X86_FEATURE_APERFMPERF))
+	if (boot_cpu_has(X86_FEATURE_APERFMPERF))
 		acpi_cpufreq_driver.getavg = cpufreq_get_measured_perf;
 
 	pr_debug("CPU%u - ACPI performance management activated.\n", cpu);