diff options
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/processor_core.c | 21 |
1 files changed, 12 insertions, 9 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 421792562642..ac2dfa63646c 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -413,18 +413,20 @@ static int acpi_processor_remove_fs(struct acpi_device *device) #define ARCH_BAD_APICID (0xff) #endif -static u8 convert_acpiid_to_cpu(u8 acpi_id) +static int convert_acpiid_to_cpu(u8 acpi_id, unsigned int *cpu_index) { u16 apic_id; - int i; + unsigned int i; apic_id = arch_acpiid_to_apicid[acpi_id]; if (apic_id == ARCH_BAD_APICID) return -1; for (i = 0; i < NR_CPUS; i++) { - if (arch_cpu_to_apicid[i] == apic_id) - return i; + if (arch_cpu_to_apicid[i] == apic_id) { + *cpu_index = i; + return 0; + } } return -1; } @@ -439,7 +441,8 @@ static int acpi_processor_get_info(struct acpi_processor *pr) acpi_status status = 0; union acpi_object object = { 0 }; struct acpi_buffer buffer = { sizeof(union acpi_object), &object }; - u8 cpu_index; + unsigned int cpu_index; + int retval; static int cpu0_initialized; ACPI_FUNCTION_TRACE("acpi_processor_get_info"); @@ -482,10 +485,10 @@ static int acpi_processor_get_info(struct acpi_processor *pr) */ pr->acpi_id = object.processor.proc_id; - cpu_index = convert_acpiid_to_cpu(pr->acpi_id); + retval = convert_acpiid_to_cpu(pr->acpi_id, &cpu_index); /* Handle UP system running SMP kernel, with no LAPIC in MADT */ - if (!cpu0_initialized && (cpu_index == 0xff) && + if (!cpu0_initialized && retval && (num_online_cpus() == 1)) { cpu_index = 0; } @@ -499,10 +502,10 @@ static int acpi_processor_get_info(struct acpi_processor *pr) * less than the max # of CPUs. They should be ignored _iff * they are physically not present. */ - if (cpu_index >= NR_CPUS) { + if (retval) { if (ACPI_FAILURE (acpi_processor_hotadd_init(pr->handle, &pr->id))) { - ACPI_DEBUG_PRINT((ACPI_DB_ERROR, + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Error getting cpuindex for acpiid 0x%x\n", pr->acpi_id)); return_VALUE(-ENODEV); |