of/promtree: no longer call prom_ functions directly; use an ops structure

Rather than assuming an architecture defines prom_getchild and friends,
define an ops struct with hooks for the various prom functions that
pdt.c needs.  This ops struct is filled in by the
arch-(and sometimes firmware-)specific code, and passed to
of_pdt_build_devicetree.

Update sparc code to define the ops struct as well.

Signed-off-by: Andres Salomon <dilinger@queued.net>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

1 files changed, 18 insertions, 22 deletions

diff --git a/drivers/of/pdt.c b/drivers/of/pdt.c
index 2fdb1b478d6f..fd02fc1dd891 100644
--- a/drivers/of/pdt.c
+++ b/drivers/of/pdt.c
@@ -23,7 +23,8 @@
 #include <linux/of.h>
 #include <linux/of_pdt.h>
 #include <asm/prom.h>
-#include <asm/oplib.h>
+
+static struct of_pdt_ops *of_pdt_prom_ops __initdata;
 
 void __initdata (*prom_build_more)(struct device_node *dp,
                 struct device_node ***nextp);
@@ -59,7 +60,7 @@ static struct property * __init build_one_prop(phandle node, char *prev,
 {
         static struct property *tmp = NULL;
         struct property *p;
-        const char *name;
+        int err;
 
         if (tmp) {
                 p = tmp;
@@ -77,28 +78,20 @@ static struct property * __init build_one_prop(phandle node, char *prev,
                 p->value = prom_early_alloc(special_len);
                 memcpy(p->value, special_val, special_len);
         } else {
-                if (prev == NULL) {
-                        name = prom_firstprop(node, p->name);
-                } else {
-                        name = prom_nextprop(node, prev, p->name);
-                }
-
-                if (!name || strlen(name) == 0) {
+                err = of_pdt_prom_ops->nextprop(node, prev, p->name);
+                if (err) {
                         tmp = p;
                         return NULL;
                 }
-#ifdef CONFIG_SPARC32
-                strcpy(p->name, name);
-#endif
-                p->length = prom_getproplen(node, p->name);
+                p->length = of_pdt_prom_ops->getproplen(node, p->name);
                 if (p->length <= 0) {
                         p->length = 0;
                 } else {
                         int len;
 
                         p->value = prom_early_alloc(p->length + 1);
-                        len = prom_getproperty(node, p->name, p->value,
-                                               p->length);
+                        len = of_pdt_prom_ops->getproperty(node, p->name,
+                                        p->value, p->length);
                         if (len <= 0)
                                 p->length = 0;
                         ((unsigned char *)p->value)[p->length] = '\0';
@@ -130,10 +123,10 @@ static char * __init get_one_property(phandle node, const char *name)
         char *buf = "<NULL>";
         int len;
 
-        len = prom_getproplen(node, name);
+        len = of_pdt_prom_ops->getproplen(node, name);
         if (len > 0) {
                 buf = prom_early_alloc(len);
-                len = prom_getproperty(node, name, buf, len);
+                len = of_pdt_prom_ops->getproperty(node, name, buf, len);
         }
 
         return buf;
@@ -211,21 +204,25 @@ static struct device_node * __init prom_build_tree(struct device_node *parent,
 #endif
                 dp->full_name = build_full_name(dp);
 
-                dp->child = prom_build_tree(dp, prom_getchild(node), nextp);
+                dp->child = prom_build_tree(dp,
+                                of_pdt_prom_ops->getchild(node), nextp);
 
                 if (prom_build_more)
                         prom_build_more(dp, nextp);
 
-                node = prom_getsibling(node);
+                node = of_pdt_prom_ops->getsibling(node);
         }
 
         return ret;
 }
 
-void __init of_pdt_build_devicetree(phandle root_node)
+void __init of_pdt_build_devicetree(phandle root_node, struct of_pdt_ops *ops)
 {
         struct device_node **nextp;
 
+        BUG_ON(!ops);
+        of_pdt_prom_ops = ops;
+
         allnodes = prom_create_node(root_node, NULL);
 #if defined(CONFIG_SPARC)
         allnodes->path_component_name = "";
@@ -234,6 +231,5 @@ void __init of_pdt_build_devicetree(phandle root_node)
 
         nextp = &allnodes->allnext;
         allnodes->child = prom_build_tree(allnodes,
-                                          prom_getchild(allnodes->phandle),
-                                          &nextp);
+                        of_pdt_prom_ops->getchild(allnodes->phandle), &nextp);
 }