Merge branch 'i2c-next' of git://aeryn.fluff.org.uk/bjdooks/linux

[linux-2.6-omap-h63xx.git] / arch / x86 / kernel / cpu / cpufreq / acpi-cpufreq.c

diff --git a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
index 88ea02dcb622fe5bf3ef4f2d7a28fc31bdf938e0..28102ad1a36360a2ceff7d1692f1e4309db075bb 100644 (file)
--- a/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
+++ b/arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c
@@ -517,6 +517,17 @@ acpi_cpufreq_guess_freq(struct acpi_cpufreq_data *data, unsigned int cpu)
        }
 }
 
+static void free_acpi_perf_data(void)
+{
+       unsigned int i;
+
+       /* Freeing a NULL pointer is OK, and alloc_percpu zeroes. */
+       for_each_possible_cpu(i)
+               free_cpumask_var(per_cpu_ptr(acpi_perf_data, i)
+                                ->shared_cpu_map);
+       free_percpu(acpi_perf_data);
+}
+
 /*
  * acpi_cpufreq_early_init - initialize ACPI P-States library
  *
@@ -527,6 +538,7 @@ acpi_cpufreq_guess_freq(struct acpi_cpufreq_data *data, unsigned int cpu)
  */
 static int __init acpi_cpufreq_early_init(void)
 {
+       unsigned int i;
        dprintk("acpi_cpufreq_early_init\n");
 
        acpi_perf_data = alloc_percpu(struct acpi_processor_performance);
@@ -534,6 +546,16 @@ static int __init acpi_cpufreq_early_init(void)
                dprintk("Memory allocation error for acpi_perf_data.\n");
                return -ENOMEM;
        }
+       for_each_possible_cpu(i) {
+               if (!alloc_cpumask_var_node(
+                       &per_cpu_ptr(acpi_perf_data, i)->shared_cpu_map,
+                       GFP_KERNEL, cpu_to_node(i))) {
+
+                       /* Freeing a NULL pointer is OK: alloc_percpu zeroes. */
+                       free_acpi_perf_data();
+                       return -ENOMEM;
+               }
+       }
 
        /* Do initialization in ACPI core */
        acpi_processor_preregister_performance(acpi_perf_data);
@@ -604,9 +626,9 @@ static int acpi_cpufreq_cpu_init(struct cpufreq_policy *policy)
         */
        if (policy->shared_type == CPUFREQ_SHARED_TYPE_ALL ||
            policy->shared_type == CPUFREQ_SHARED_TYPE_ANY) {
-               policy->cpus = perf->shared_cpu_map;
+               cpumask_copy(&policy->cpus, perf->shared_cpu_map);
        }
-       policy->related_cpus = perf->shared_cpu_map;
+       cpumask_copy(&policy->related_cpus, perf->shared_cpu_map);
 
 #ifdef CONFIG_SMP
        dmi_check_system(sw_any_bug_dmi_table);
@@ -795,7 +817,7 @@ static int __init acpi_cpufreq_init(void)
 
        ret = cpufreq_register_driver(&acpi_cpufreq_driver);
        if (ret)
-               free_percpu(acpi_perf_data);
+               free_acpi_perf_data();
 
        return ret;
 }