3 files changed, 43 insertions, 24 deletions

diff --git a/arch/sparc64/kernel/central.c b/arch/sparc64/kernel/central.c
index b66336db00ee..e724c54af029 100644
--- a/arch/sparc64/kernel/central.c
+++ b/arch/sparc64/kernel/central.c
@@ -126,6 +126,10 @@ static void probe_other_fhcs(void)
                 int board;
                 u32 tmp;
 
+                if (dp->parent &&
+                    dp->parent->parent != NULL)
+                        continue;
+
                 fhc = (struct linux_fhc *)
                         central_alloc_bootmem(sizeof(struct linux_fhc));
                 if (fhc == NULL)
diff --git a/arch/sparc64/kernel/of_device.c b/arch/sparc64/kernel/of_device.c
index d3dfb2a36d47..983ca5f485cf 100644
--- a/arch/sparc64/kernel/of_device.c
+++ b/arch/sparc64/kernel/of_device.c
@@ -402,16 +402,22 @@ static void of_bus_sbus_count_cells(struct device_node *child,
                 *sizec = 1;
 }
 
-static int of_bus_sbus_map(u32 *addr, const u32 *range, int na, int ns, int pna)
-{
-        return of_bus_default_map(addr, range, na, ns, pna);
-}
-
-static unsigned int of_bus_sbus_get_flags(u32 *addr)
+/*
+ * FHC/Central bus specific translator.
+ *
+ * This is just needed to hard-code the address and size cell
+ * counts.  'fhc' and 'central' nodes lack the #address-cells and
+ * #size-cells properties, and if you walk to the root on such
+ * Enterprise boxes all you'll get is a #size-cells of 2 which is
+ * not what we want to use.
+ */
+static int of_bus_fhc_match(struct device_node *np)
 {
-        return IORESOURCE_MEM;
+        return !strcmp(np->name, "fhc") ||
+                !strcmp(np->name, "central");
 }
 
+#define of_bus_fhc_count_cells of_bus_sbus_count_cells
 
 /*
  * Array of bus specific translators
@@ -433,8 +439,17 @@ static struct of_bus of_busses[] = {
                 .addr_prop_name = "reg",
                 .match = of_bus_sbus_match,
                 .count_cells = of_bus_sbus_count_cells,
-                .map = of_bus_sbus_map,
-                .get_flags = of_bus_sbus_get_flags,
+                .map = of_bus_default_map,
+                .get_flags = of_bus_default_get_flags,
+        },
+        /* FHC */
+        {
+                .name = "fhc",
+                .addr_prop_name = "reg",
+                .match = of_bus_fhc_match,
+                .count_cells = of_bus_fhc_count_cells,
+                .map = of_bus_default_map,
+                .get_flags = of_bus_default_get_flags,
         },
         /* Default */
         {
diff --git a/arch/sparc64/kernel/prom.c b/arch/sparc64/kernel/prom.c
index e21cd6afa709..c60efb3cb22e 100644
--- a/arch/sparc64/kernel/prom.c
+++ b/arch/sparc64/kernel/prom.c
@@ -1079,23 +1079,22 @@ static void sun4v_vdev_irq_trans_init(struct device_node *dp)
 
 static void irq_trans_init(struct device_node *dp)
 {
-        const char *model;
 #ifdef CONFIG_PCI
+        const char *model;
         int i;
 #endif
 
+#ifdef CONFIG_PCI
         model = of_get_property(dp, "model", NULL);
         if (!model)
                 model = of_get_property(dp, "compatible", NULL);
-        if (!model)
-                return;
-
-#ifdef CONFIG_PCI
-        for (i = 0; i < ARRAY_SIZE(pci_irq_trans_table); i++) {
-                struct irq_trans *t = &pci_irq_trans_table[i];
+        if (model) {
+                for (i = 0; i < ARRAY_SIZE(pci_irq_trans_table); i++) {
+                        struct irq_trans *t = &pci_irq_trans_table[i];
 
-                if (!strcmp(model, t->name))
-                        return t->init(dp);
+                        if (!strcmp(model, t->name))
+                                return t->init(dp);
+                }
         }
 #endif
 #ifdef CONFIG_SBUS
@@ -1103,8 +1102,9 @@ static void irq_trans_init(struct device_node *dp)
             !strcmp(dp->name, "sbi"))
                 return sbus_irq_trans_init(dp);
 #endif
-        if (!strcmp(dp->name, "central"))
-                return central_irq_trans_init(dp->child);
+        if (!strcmp(dp->name, "fhc") &&
+            !strcmp(dp->parent->name, "central"))
+                return central_irq_trans_init(dp);
         if (!strcmp(dp->name, "virtual-devices"))
                 return sun4v_vdev_irq_trans_init(dp);
 }
@@ -1516,7 +1516,7 @@ static char * __init get_one_property(phandle node, const char *name)
         return buf;
 }
 
-static struct device_node * __init create_node(phandle node)
+static struct device_node * __init create_node(phandle node, struct device_node *parent)
 {
         struct device_node *dp;
 
@@ -1525,6 +1525,7 @@ static struct device_node * __init create_node(phandle node)
 
         dp = prom_early_alloc(sizeof(*dp));
         dp->unique_id = unique_id++;
+        dp->parent = parent;
 
         kref_init(&dp->kref);
 
@@ -1543,12 +1544,11 @@ static struct device_node * __init build_tree(struct device_node *parent, phandl
 {
         struct device_node *dp;
 
-        dp = create_node(node);
+        dp = create_node(node, parent);
         if (dp) {
                 *(*nextp) = dp;
                 *nextp = &dp->allnext;
 
-                dp->parent = parent;
                 dp->path_component_name = build_path_component(dp);
                 dp->full_name = build_full_name(dp);
 
@@ -1564,7 +1564,7 @@ void __init prom_build_devicetree(void)
 {
         struct device_node **nextp;
 
-        allnodes = create_node(prom_root_node);
+        allnodes = create_node(prom_root_node, NULL);
         allnodes->path_component_name = "";
         allnodes->full_name = "/";