[IA64] use common pxm function

This patch simplifies a couple places where we search for _PXM
values in ACPI namespace.  Thanks,

Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>

diff --git a/arch/ia64/hp/common/sba_iommu.c b/arch/ia64/hp/common/sba_iommu.c
index 6a8fcba..b8db6e3 100644 (file)
--- a/arch/ia64/hp/common/sba_iommu.c
+++ b/arch/ia64/hp/common/sba_iommu.c
@@ -1944,43 +1944,17 @@ sba_connect_bus(struct pci_bus *bus)
 static void __init
 sba_map_ioc_to_node(struct ioc *ioc, acpi_handle handle)
 {
-       struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
-       union acpi_object *obj;
-       acpi_handle phandle;
        unsigned int node;
+       int pxm;
 
        ioc->node = MAX_NUMNODES;
 
-       /*
-        * Check for a _PXM on this node first.  We don't typically see
-        * one here, so we'll end up getting it from the parent.
-        */
-       if (ACPI_FAILURE(acpi_evaluate_object(handle, "_PXM", NULL, &buffer))) {
-               if (ACPI_FAILURE(acpi_get_parent(handle, &phandle)))
-                       return;
-
-               /* Reset the acpi buffer */
-               buffer.length = ACPI_ALLOCATE_BUFFER;
-               buffer.pointer = NULL;
-
-               if (ACPI_FAILURE(acpi_evaluate_object(phandle, "_PXM", NULL,
-                                                     &buffer)))
-                       return;
-       }
+       pxm = acpi_get_pxm(handle);
 
-       if (!buffer.length || !buffer.pointer)
+       if (pxm < 0)
                return;
 
-       obj = buffer.pointer;
-
-       if (obj->type != ACPI_TYPE_INTEGER ||
-           obj->integer.value >= MAX_PXM_DOMAINS) {
-               acpi_os_free(buffer.pointer);
-               return;
-       }
-
-       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))
                return;

diff --git a/arch/ia64/kernel/acpi.c b/arch/ia64/kernel/acpi.c
index a8e99c5..72dfd9e 100644 (file)
--- 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)))