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Diffstat (limited to 'arch/powerpc/kernel/prom.c')
-rw-r--r--arch/powerpc/kernel/prom.c44
1 files changed, 14 insertions, 30 deletions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index a1787ffb6319..eb913f80bfb1 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -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);
@@ -1034,7 +1019,7 @@ int device_is_compatible(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:
@@ -1528,7 +1512,7 @@ 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(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 +1642,16 @@ 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) {