diff options
| author | Borislav Petkov <bp@suse.de> | 2013-01-20 10:24:30 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-02-02 00:01:15 +0100 |
| commit | c0939e46a84c6af89d6f093a34c1c9341dfe1d6e (patch) | |
| tree | ece6b7432f578e0602d6d4f130dfd8ea577052f3 /drivers/cpufreq/powernow-k8.c | |
| parent | 4827ea6ec9ca1e873a6d387a3ee287f78ea5ee83 (diff) | |
powernow-k8: Cleanup init function
Make it hotplug-safe and cleanup formatting.
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/powernow-k8.c')
| -rw-r--r-- | drivers/cpufreq/powernow-k8.c | 25 |
1 files changed, 14 insertions, 11 deletions
diff --git a/drivers/cpufreq/powernow-k8.c b/drivers/cpufreq/powernow-k8.c index 0234d0c6d68c..d13a13678b5f 100644 --- a/drivers/cpufreq/powernow-k8.c +++ b/drivers/cpufreq/powernow-k8.c @@ -1271,7 +1271,7 @@ static void __request_acpi_cpufreq(void) static int __cpuinit powernowk8_init(void) { unsigned int i, supported_cpus = 0; - int rv; + int ret; if (static_cpu_has(X86_FEATURE_HW_PSTATE)) { __request_acpi_cpufreq(); @@ -1281,24 +1281,27 @@ static int __cpuinit powernowk8_init(void) if (!x86_match_cpu(powernow_k8_ids)) return -ENODEV; + get_online_cpus(); for_each_online_cpu(i) { - int rc; - smp_call_function_single(i, check_supported_cpu, &rc, 1); - if (rc == 0) + smp_call_function_single(i, check_supported_cpu, &ret, 1); + if (!ret) supported_cpus++; } - if (supported_cpus != num_online_cpus()) + if (supported_cpus != num_online_cpus()) { + put_online_cpus(); return -ENODEV; + } + put_online_cpus(); - rv = cpufreq_register_driver(&cpufreq_amd64_driver); + ret = cpufreq_register_driver(&cpufreq_amd64_driver); + if (ret) + return ret; - if (!rv) - pr_info(PFX "Found %d %s (%d cpu cores) (" VERSION ")\n", - num_online_nodes(), boot_cpu_data.x86_model_id, - supported_cpus); + pr_info(PFX "Found %d %s (%d cpu cores) (" VERSION ")\n", + num_online_nodes(), boot_cpu_data.x86_model_id, supported_cpus); - return rv; + return ret; } /* driver entry point for term */ |