[POWERPC] cell: safer of_has_vicinity routine

This patch changes the way we check for the existence of
vicinity property in spe device nodes.

The new implementation does not depend on having an initialized
cbe_spu_info[0].spus, and checks for presence of vicinity in all
nodes, not only in the first one.

Signed-off-by: Andre Detsch <adetsch@br.ibm.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/arch/powerpc/platforms/cell/spu_manage.c b/arch/powerpc/platforms/cell/spu_manage.c
index b36ed62..9979197 100644 (file)
--- a/arch/powerpc/platforms/cell/spu_manage.c
+++ b/arch/powerpc/platforms/cell/spu_manage.c
@@ -411,10 +411,15 @@ static void init_affinity_qs20_harcoded(void)
 
 static int of_has_vicinity(void)
 {
-       struct spu* spu;
+       struct device_node *dn;
 
-       spu = list_first_entry(&cbe_spu_info[0].spus, struct spu, cbe_list);
-       return of_find_property(spu_devnode(spu), "vicinity", NULL) != NULL;
+       for_each_node_by_type(dn, "spe") {
+               if (of_find_property(dn, "vicinity", NULL))  {
+                       of_node_put(dn);
+                       return 1;
+               }
+       }
+       return 0;
 }
 
 static struct spu *devnode_spu(int cbe, struct device_node *dn)