Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git

Conflicts:
	drivers/mtd/mtd_blkdevs.c

Merge Grant's device-tree bits so that we can apply the subsequent fixes.

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

1 files changed, 28 insertions, 174 deletions

diff --git a/arch/sparc/kernel/prom_common.c b/arch/sparc/kernel/prom_common.c
index 1f830da2ddf2..ed25834328f4 100644
--- a/arch/sparc/kernel/prom_common.c
+++ b/arch/sparc/kernel/prom_common.c
@@ -20,14 +20,13 @@
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <linux/of.h>
+#include <linux/of_pdt.h>
 #include <asm/prom.h>
 #include <asm/oplib.h>
 #include <asm/leon.h>
 
 #include "prom.h"
 
-void (*prom_build_more)(struct device_node *dp, struct device_node ***nextp);
-
 struct device_node *of_console_device;
 EXPORT_SYMBOL(of_console_device);
 
@@ -119,192 +118,47 @@ int of_find_in_proplist(const char *list, const char *match, int len)
 }
 EXPORT_SYMBOL(of_find_in_proplist);
 
-unsigned int prom_unique_id;
-
-static struct property * __init build_one_prop(phandle node, char *prev,
-                                               char *special_name,
-                                               void *special_val,
-                                               int special_len)
+/*
+ * SPARC32 and SPARC64's prom_nextprop() do things differently
+ * here, despite sharing the same interface.  SPARC32 doesn't fill in 'buf',
+ * returning NULL on an error.  SPARC64 fills in 'buf', but sets it to an
+ * empty string upon error.
+ */
+static int __init handle_nextprop_quirks(char *buf, const char *name)
 {
-        static struct property *tmp = NULL;
-        struct property *p;
-        const char *name;
-
-        if (tmp) {
-                p = tmp;
-                memset(p, 0, sizeof(*p) + 32);
-                tmp = NULL;
-        } else {
-                p = prom_early_alloc(sizeof(struct property) + 32);
-                p->unique_id = prom_unique_id++;
-        }
-
-        p->name = (char *) (p + 1);
-        if (special_name) {
-                strcpy(p->name, special_name);
-                p->length = special_len;
-                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)
+                return -1;
 
-                if (!name || strlen(name) == 0) {
-                        tmp = p;
-                        return NULL;
-                }
 #ifdef CONFIG_SPARC32
-                strcpy(p->name, name);
+        strcpy(buf, name);
 #endif
-                p->length = prom_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);
-                        if (len <= 0)
-                                p->length = 0;
-                        ((unsigned char *)p->value)[p->length] = '\0';
-                }
-        }
-        return p;
-}
-
-static struct property * __init build_prop_list(phandle node)
-{
-        struct property *head, *tail;
-
-        head = tail = build_one_prop(node, NULL,
-                                     ".node", &node, sizeof(node));
-
-        tail->next = build_one_prop(node, NULL, NULL, NULL, 0);
-        tail = tail->next;
-        while(tail) {
-                tail->next = build_one_prop(node, tail->name,
-                                            NULL, NULL, 0);
-                tail = tail->next;
-        }
-
-        return head;
-}
-
-static char * __init get_one_property(phandle node, const char *name)
-{
-        char *buf = "<NULL>";
-        int len;
-
-        len = prom_getproplen(node, name);
-        if (len > 0) {
-                buf = prom_early_alloc(len);
-                len = prom_getproperty(node, name, buf, len);
-        }
-
-        return buf;
-}
-
-static struct device_node * __init prom_create_node(phandle node,
-                                                    struct device_node *parent)
-{
-        struct device_node *dp;
-
-        if (!node)
-                return NULL;
-
-        dp = prom_early_alloc(sizeof(*dp));
-        dp->unique_id = prom_unique_id++;
-        dp->parent = parent;
-
-        kref_init(&dp->kref);
-
-        dp->name = get_one_property(node, "name");
-        dp->type = get_one_property(node, "device_type");
-        dp->phandle = node;
-
-        dp->properties = build_prop_list(node);
-
-        irq_trans_init(dp);
-
-        return dp;
-}
-
-char * __init build_full_name(struct device_node *dp)
-{
-        int len, ourlen, plen;
-        char *n;
-
-        plen = strlen(dp->parent->full_name);
-        ourlen = strlen(dp->path_component_name);
-        len = ourlen + plen + 2;
-
-        n = prom_early_alloc(len);
-        strcpy(n, dp->parent->full_name);
-        if (!of_node_is_root(dp->parent)) {
-                strcpy(n + plen, "/");
-                plen++;
-        }
-        strcpy(n + plen, dp->path_component_name);
-
-        return n;
+        return 0;
 }
 
-static struct device_node * __init prom_build_tree(struct device_node *parent,
-                                                   phandle node,
-                                                   struct device_node ***nextp)
+static int __init prom_common_nextprop(phandle node, char *prev, char *buf)
 {
-        struct device_node *ret = NULL, *prev_sibling = NULL;
-        struct device_node *dp;
-
-        while (1) {
-                dp = prom_create_node(node, parent);
-                if (!dp)
-                        break;
-
-                if (prev_sibling)
-                        prev_sibling->sibling = dp;
-
-                if (!ret)
-                        ret = dp;
-                prev_sibling = dp;
-
-                *(*nextp) = dp;
-                *nextp = &dp->allnext;
-
-                dp->path_component_name = build_path_component(dp);
-                dp->full_name = build_full_name(dp);
-
-                dp->child = prom_build_tree(dp, prom_getchild(node), nextp);
-
-                if (prom_build_more)
-                        prom_build_more(dp, nextp);
-
-                node = prom_getsibling(node);
-        }
+        const char *name;
 
-        return ret;
+        buf[0] = '\0';
+        name = prom_nextprop(node, prev, buf);
+        return handle_nextprop_quirks(buf, name);
 }
 
 unsigned int prom_early_allocated __initdata;
 
+static struct of_pdt_ops prom_sparc_ops __initdata = {
+        .nextprop = prom_common_nextprop,
+        .getproplen = prom_getproplen,
+        .getproperty = prom_getproperty,
+        .getchild = prom_getchild,
+        .getsibling = prom_getsibling,
+};
+
 void __init prom_build_devicetree(void)
 {
-        struct device_node **nextp;
-
-        allnodes = prom_create_node(prom_root_node, NULL);
-        allnodes->path_component_name = "";
-        allnodes->full_name = "/";
-
-        nextp = &allnodes->allnext;
-        allnodes->child = prom_build_tree(allnodes,
-                                          prom_getchild(allnodes->phandle),
-                                          &nextp);
+        of_pdt_build_devicetree(prom_root_node, &prom_sparc_ops);
         of_console_init();
 
-        printk("PROM: Built device tree with %u bytes of memory.\n",
-               prom_early_allocated);
+        pr_info("PROM: Built device tree with %u bytes of memory.\n",
+                        prom_early_allocated);
 }