diff options
| -rw-r--r-- | drivers/acpi/processor_core.c | 53 | ||||
| -rw-r--r-- | include/acpi/acpi_drivers.h | 2 |
2 files changed, 33 insertions, 22 deletions
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 6893c0bffb5a..eacf9a252019 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -377,7 +377,7 @@ static int acpi_processor_remove_fs(struct acpi_device *device) /* Use the acpiid in MADT to map cpus in case of SMP */ #ifndef CONFIG_SMP -#define convert_acpiid_to_cpu(acpi_id) (-1) +static int get_cpu_id(acpi_handle handle, u32 acpi_id) {return -1;} #else static struct acpi_table_madt *madt; @@ -483,7 +483,7 @@ exit: return apic_id; } -static int get_apic_id(acpi_handle handle, u32 acpi_id) +static int get_cpu_id(acpi_handle handle, u32 acpi_id) { int i; int apic_id = -1; @@ -506,7 +506,7 @@ static int get_apic_id(acpi_handle handle, u32 acpi_id) Driver Interface -------------------------------------------------------------------------- */ -static int acpi_processor_get_info(struct acpi_processor *pr) +static int acpi_processor_get_info(struct acpi_processor *pr, unsigned has_uid) { acpi_status status = 0; union acpi_object object = { 0 }; @@ -535,24 +535,35 @@ static int acpi_processor_get_info(struct acpi_processor *pr) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "No bus mastering arbitration control\n")); - /* - * Evalute the processor object. Note that it is common on SMP to - * have the first (boot) processor with a valid PBLK address while - * all others have a NULL address. - */ - status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer); - if (ACPI_FAILURE(status)) { - printk(KERN_ERR PREFIX "Evaluating processor object\n"); - return -ENODEV; - } - - /* - * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP. - * >>> 'acpi_get_processor_id(acpi_id, &id)' in arch/xxx/acpi.c - */ - pr->acpi_id = object.processor.proc_id; + /* Check if it is a Device with HID and UID */ + if (has_uid) { + unsigned long value; + status = acpi_evaluate_integer(pr->handle, METHOD_NAME__UID, + NULL, &value); + if (ACPI_FAILURE(status)) { + printk(KERN_ERR PREFIX "Evaluating processor _UID\n"); + return -ENODEV; + } + pr->acpi_id = value; + } else { + /* + * Evalute the processor object. Note that it is common on SMP to + * have the first (boot) processor with a valid PBLK address while + * all others have a NULL address. + */ + status = acpi_evaluate_object(pr->handle, NULL, NULL, &buffer); + if (ACPI_FAILURE(status)) { + printk(KERN_ERR PREFIX "Evaluating processor object\n"); + return -ENODEV; + } - cpu_index = get_apic_id(pr->handle, pr->acpi_id); + /* + * TBD: Synch processor ID (via LAPIC/LSAPIC structures) on SMP. + * >>> 'acpi_get_processor_id(acpi_id, &id)' in arch/xxx/acpi.c + */ + pr->acpi_id = object.processor.proc_id; + } + cpu_index = get_cpu_id(pr->handle, pr->acpi_id); /* Handle UP system running SMP kernel, with no LAPIC in MADT */ if (!cpu0_initialized && (cpu_index == -1) && @@ -621,7 +632,7 @@ static int __cpuinit acpi_processor_start(struct acpi_device *device) pr = acpi_driver_data(device); - result = acpi_processor_get_info(pr); + result = acpi_processor_get_info(pr, device->flags.unique_id); if (result) { /* Processor is physically not present */ return 0; diff --git a/include/acpi/acpi_drivers.h b/include/acpi/acpi_drivers.h index 6a5bdcefec64..baaa734b1098 100644 --- a/include/acpi/acpi_drivers.h +++ b/include/acpi/acpi_drivers.h @@ -37,7 +37,7 @@ /* _HID definitions */ #define ACPI_POWER_HID "ACPI_PWR" -#define ACPI_PROCESSOR_HID "ACPI_CPU" +#define ACPI_PROCESSOR_HID "ACPI0007" #define ACPI_SYSTEM_HID "ACPI_SYS" #define ACPI_THERMAL_HID "ACPI_THM" #define ACPI_BUTTON_HID_POWERF "ACPI_FPB" |