From c0939e46a84c6af89d6f093a34c1c9341dfe1d6e Mon Sep 17 00:00:00 2001 From: Borislav Petkov Date: Sun, 20 Jan 2013 10:24:30 +0000 Subject: [PATCH] powernow-k8: Cleanup init function Make it hotplug-safe and cleanup formatting. Signed-off-by: Borislav Petkov Signed-off-by: Rafael J. Wysocki --- drivers/cpufreq/powernow-k8.c | 25 ++++++++++++++----------- 1 file 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 */ -- 2.39.2