summaryrefslogtreecommitdiffstats
path: root/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/kernel/cpu/cpufreq/powernow-k8.c')
-rw-r--r--arch/x86/kernel/cpu/cpufreq/powernow-k8.c30
1 files changed, 18 insertions, 12 deletions
diff --git a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
index 7f05f44b97e..5c28b37dea1 100644
--- a/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
+++ b/arch/x86/kernel/cpu/cpufreq/powernow-k8.c
@@ -766,7 +766,7 @@ static void powernow_k8_acpi_pst_values(struct powernow_k8_data *data, unsigned
static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
{
struct cpufreq_frequency_table *powernow_table;
- int ret_val;
+ int ret_val = -ENODEV;
if (acpi_processor_register_performance(&data->acpi_data, data->cpu)) {
dprintk("register performance failed: bad ACPI data\n");
@@ -815,6 +815,13 @@ static int powernow_k8_cpu_init_acpi(struct powernow_k8_data *data)
/* notify BIOS that we exist */
acpi_processor_notify_smm(THIS_MODULE);
+ if (!alloc_cpumask_var(&data->acpi_data.shared_cpu_map, GFP_KERNEL)) {
+ printk(KERN_ERR PFX
+ "unable to alloc powernow_k8_data cpumask\n");
+ ret_val = -ENOMEM;
+ goto err_out_mem;
+ }
+
return 0;
err_out_mem:
@@ -826,7 +833,7 @@ err_out:
/* data->acpi_data.state_count informs us at ->exit() whether ACPI was used */
data->acpi_data.state_count = 0;
- return -ENODEV;
+ return ret_val;
}
static int fill_powernow_table_pstate(struct powernow_k8_data *data, struct cpufreq_frequency_table *powernow_table)
@@ -929,6 +936,7 @@ static void powernow_k8_cpu_exit_acpi(struct powernow_k8_data *data)
{
if (data->acpi_data.state_count)
acpi_processor_unregister_performance(&data->acpi_data, data->cpu);
+ free_cpumask_var(data->acpi_data.shared_cpu_map);
}
#else
@@ -1134,7 +1142,8 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
data->cpu = pol->cpu;
data->currpstate = HW_PSTATE_INVALID;
- if (powernow_k8_cpu_init_acpi(data)) {
+ rc = powernow_k8_cpu_init_acpi(data);
+ if (rc) {
/*
* Use the PSB BIOS structure. This is only availabe on
* an UP version, and is deprecated by AMD.
@@ -1152,20 +1161,17 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
"ACPI maintainers and complain to your BIOS "
"vendor.\n");
#endif
- kfree(data);
- return -ENODEV;
+ goto err_out;
}
if (pol->cpu != 0) {
printk(KERN_ERR FW_BUG PFX "No ACPI _PSS objects for "
"CPU other than CPU0. Complain to your BIOS "
"vendor.\n");
- kfree(data);
- return -ENODEV;
+ goto err_out;
}
rc = find_psb_table(data);
if (rc) {
- kfree(data);
- return -ENODEV;
+ goto err_out;
}
}
@@ -1193,10 +1199,10 @@ static int __cpuinit powernowk8_cpu_init(struct cpufreq_policy *pol)
set_cpus_allowed_ptr(current, &oldmask);
if (cpu_family == CPU_HW_PSTATE)
- pol->cpus = cpumask_of_cpu(pol->cpu);
+ cpumask_copy(pol->cpus, cpumask_of(pol->cpu));
else
- pol->cpus = per_cpu(cpu_core_map, pol->cpu);
- data->available_cores = &(pol->cpus);
+ cpumask_copy(pol->cpus, &per_cpu(cpu_core_map, pol->cpu));
+ data->available_cores = pol->cpus;
/* Take a crude guess here.
* That guess was in microseconds, so multiply with 1000 */