Merge branch 'linux-2.6' into for-linus

[powerpc.git] / arch / powerpc / kernel / prom.c

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index a1787ff..16d29d1 100644 (file)
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -724,7 +724,7 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
                strlcpy(cmd_line, p, min((int)l, COMMAND_LINE_SIZE));
 
 #ifdef CONFIG_CMDLINE
-       if (l == 0 || (l == 1 && (*p) == 0))
+       if (p == NULL || l == 0 || (l == 1 && (*p) == 0))
                strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
 #endif /* CONFIG_CMDLINE */
 
@@ -757,24 +757,9 @@ static int __init early_init_dt_scan_root(unsigned long node,
 static unsigned long __init dt_mem_next_cell(int s, cell_t **cellp)
 {
        cell_t *p = *cellp;
-       unsigned long r;
 
-       /* Ignore more than 2 cells */
-       while (s > sizeof(unsigned long) / 4) {
-               p++;
-               s--;
-       }
-       r = *p++;
-#ifdef CONFIG_PPC64
-       if (s > 1) {
-               r <<= 32;
-               r |= *(p++);
-               s--;
-       }
-#endif
-
-       *cellp = p;
-       return r;
+       *cellp = p + s;
+       return of_read_ulong(p, s);
 }
 
 
@@ -942,11 +927,11 @@ void __init early_init_devtree(void *params)
 int
 prom_n_addr_cells(struct device_node* np)
 {
-       int* ip;
+       const int *ip;
        do {
                if (np->parent)
                        np = np->parent;
-               ip = (int *) get_property(np, "#address-cells", NULL);
+               ip = get_property(np, "#address-cells", NULL);
                if (ip != NULL)
                        return *ip;
        } while (np->parent);
@@ -958,11 +943,11 @@ EXPORT_SYMBOL(prom_n_addr_cells);
 int
 prom_n_size_cells(struct device_node* np)
 {
-       int* ip;
+       const int* ip;
        do {
                if (np->parent)
                        np = np->parent;
-               ip = (int *) get_property(np, "#size-cells", NULL);
+               ip = get_property(np, "#size-cells", NULL);
                if (ip != NULL)
                        return *ip;
        } while (np->parent);
@@ -1029,12 +1014,12 @@ EXPORT_SYMBOL(find_all_nodes);
 /** Checks if the given "compat" string matches one of the strings in
  * the device's "compatible" property
  */
-int device_is_compatible(struct device_node *device, const char *compat)
+int device_is_compatible(const struct device_node *device, const char *compat)
 {
        const char* cp;
        int cplen, l;
 
-       cp = (char *) get_property(device, "compatible", &cplen);
+       cp = get_property(device, "compatible", &cplen);
        if (cp == NULL)
                return 0;
        while (cplen > 0) {
@@ -1449,7 +1434,7 @@ static int of_finish_dynamic_node(struct device_node *node)
 {
        struct device_node *parent = of_get_parent(node);
        int err = 0;
-       phandle *ibm_phandle;
+       const phandle *ibm_phandle;
 
        node->name = get_property(node, "name", NULL);
        node->type = get_property(node, "device_type", NULL);
@@ -1466,8 +1451,7 @@ static int of_finish_dynamic_node(struct device_node *node)
                return -ENODEV;
 
        /* fix up new node's linux_phandle field */
-       if ((ibm_phandle = (unsigned int *)get_property(node,
-                                                       "ibm,phandle", NULL)))
+       if ((ibm_phandle = get_property(node, "ibm,phandle", NULL)))
                node->linux_phandle = *ibm_phandle;
 
 out:
@@ -1507,7 +1491,8 @@ static int __init prom_reconfig_setup(void)
 __initcall(prom_reconfig_setup);
 #endif
 
-struct property *of_find_property(struct device_node *np, const char *name,
+struct property *of_find_property(const struct device_node *np,
+                                 const char *name,
                                  int *lenp)
 {
        struct property *pp;
@@ -1528,7 +1513,8 @@ struct property *of_find_property(struct device_node *np, const char *name,
  * Find a property with a given name for a given node
  * and return the value.
  */
-void *get_property(struct device_node *np, const char *name, int *lenp)
+const void *get_property(const struct device_node *np, const char *name,
+                        int *lenp)
 {
        struct property *pp = of_find_property(np,name,lenp);
        return pp ? pp->value : NULL;
@@ -1658,16 +1644,16 @@ struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
        hardid = get_hard_smp_processor_id(cpu);
 
        for_each_node_by_type(np, "cpu") {
-               u32 *intserv;
+               const u32 *intserv;
                unsigned int plen, t;
 
                /* Check for ibm,ppc-interrupt-server#s. If it doesn't exist
                 * fallback to "reg" property and assume no threads
                 */
-               intserv = (u32 *)get_property(np, "ibm,ppc-interrupt-server#s",
-                                             &plen);
+               intserv = get_property(np, "ibm,ppc-interrupt-server#s",
+                               &plen);
                if (intserv == NULL) {
-                       u32 *reg = (u32 *)get_property(np, "reg", NULL);
+                       const u32 *reg = get_property(np, "reg", NULL);
                        if (reg == NULL)
                                continue;
                        if (*reg == hardid) {
@@ -1688,6 +1674,7 @@ struct device_node *of_get_cpu_node(int cpu, unsigned int *thread)
        }
        return NULL;
 }
+EXPORT_SYMBOL(of_get_cpu_node);
 
 #ifdef DEBUG
 static struct debugfs_blob_wrapper flat_dt_blob;