diff options
Diffstat (limited to 'drivers/acpi/cppc_acpi.c')
| -rw-r--r-- | drivers/acpi/cppc_acpi.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index d0d0504b7c89..3ca0729f7e0e 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -776,21 +776,25 @@ int acpi_cppc_processor_probe(struct acpi_processor *pr) init_waitqueue_head(&pcc_data.pcc_write_wait_q); } - /* Plug PSD data into this CPUs CPC descriptor. */ - per_cpu(cpc_desc_ptr, pr->id) = cpc_ptr; - /* Everything looks okay */ pr_debug("Parsed CPC struct for CPU: %d\n", pr->id); /* Add per logical CPU nodes for reading its feedback counters. */ cpu_dev = get_cpu_device(pr->id); - if (!cpu_dev) + if (!cpu_dev) { + ret = -EINVAL; goto out_free; + } + + /* Plug PSD data into this CPUs CPC descriptor. */ + per_cpu(cpc_desc_ptr, pr->id) = cpc_ptr; ret = kobject_init_and_add(&cpc_ptr->kobj, &cppc_ktype, &cpu_dev->kobj, "acpi_cppc"); - if (ret) + if (ret) { + per_cpu(cpc_desc_ptr, pr->id) = NULL; goto out_free; + } kfree(output.pointer); return 0; @@ -824,6 +828,8 @@ void acpi_cppc_processor_exit(struct acpi_processor *pr) void __iomem *addr; cpc_ptr = per_cpu(cpc_desc_ptr, pr->id); + if (!cpc_ptr) + return; /* Free all the mapped sys mem areas for this CPU */ for (i = 2; i < cpc_ptr->num_entries; i++) { |