1 files changed, 5 insertions, 18 deletions

diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index a8e99c56a768..72dfd9e7de0f 100644
--- a/arch/ia64/kernel/acpi.c
+++ b/arch/ia64/kernel/acpi.c
@@ -779,7 +779,7 @@ acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
         union acpi_object *obj;
         struct acpi_table_iosapic *iosapic;
         unsigned int gsi_base;
-        int node;
+        int pxm, node;
 
         /* Only care about objects w/ a method that returns the MADT */
         if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer)))
@@ -805,29 +805,16 @@ acpi_map_iosapic (acpi_handle handle, u32 depth, void *context, void **ret)
         gsi_base = iosapic->global_irq_base;
 
         acpi_os_free(buffer.pointer);
-        buffer.length = ACPI_ALLOCATE_BUFFER;
-        buffer.pointer = NULL;
 
         /*
-         * OK, it's an IOSAPIC MADT entry, look for a _PXM method to tell
+         * OK, it's an IOSAPIC MADT entry, look for a _PXM value to tell
          * us which node to associate this with.
          */
-        if (ACPI_FAILURE(acpi_evaluate_object(handle, "_PXM", NULL, &buffer)))
-                return AE_OK;
-
-        if (!buffer.length || !buffer.pointer)
-                return AE_OK;
-
-        obj = buffer.pointer;
-
-        if (obj->type != ACPI_TYPE_INTEGER ||
-            obj->integer.value >= MAX_PXM_DOMAINS) {
-                acpi_os_free(buffer.pointer);
+        pxm = acpi_get_pxm(handle);
+        if (pxm < 0)
                 return AE_OK;
-        }
 
-        node = pxm_to_nid_map[obj->integer.value];
-        acpi_os_free(buffer.pointer);
+        node = pxm_to_nid_map[pxm];
 
         if (node >= MAX_NUMNODES || !node_online(node) ||
             cpus_empty(node_to_cpumask(node)))