1 files changed, 32 insertions, 21 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;