[POWERPC] Generalise device_node flag interface

The struct device_node currently has a _flags variable, although
it's only used for one flag - OF_DYNAMIC.  Generalise the flag
accessors so we can use them with other flags in future.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>

3 files changed, 13 insertions, 5 deletions

diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index cc9632c7149e..bcd1c5ed44a3 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -1375,7 +1375,7 @@ static void of_node_release(struct kref *kref)
         struct device_node *node = kref_to_device_node(kref);
         struct property *prop = node->properties;
 
-        if (!OF_IS_DYNAMIC(node))
+        if (!of_node_check_flag(node, OF_DYNAMIC))
                 return;
         while (prop) {
                 struct property *next = prop->next;
diff --git a/arch/powerpc/platforms/pseries/reconfig.c b/arch/powerpc/platforms/pseries/reconfig.c
index 5aa97aff3391..c02f8742c54d 100644
--- a/arch/powerpc/platforms/pseries/reconfig.c
+++ b/arch/powerpc/platforms/pseries/reconfig.c
@@ -123,7 +123,7 @@ static int pSeries_reconfig_add_node(const char *path, struct property *proplist
         strcpy(np->full_name, path);
 
         np->properties = proplist;
-        OF_MARK_DYNAMIC(np);
+        of_node_set_flag(np, OF_DYNAMIC);
         kref_init(&np->kref);
 
         np->parent = derive_parent(path);
diff --git a/include/asm-powerpc/prom.h b/include/asm-powerpc/prom.h
index 1122a9278afd..f1006b91bd1a 100644
--- a/include/asm-powerpc/prom.h
+++ b/include/asm-powerpc/prom.h
@@ -98,10 +98,18 @@ struct device_node {
 extern struct device_node *of_chosen;
 
 /* flag descriptions */
-#define OF_DYNAMIC 1 /* node and properties were allocated via kmalloc */
+#define OF_DYNAMIC      1 /* node and properties were allocated via kmalloc */
+
+static inline int of_node_check_flag(struct device_node *n, unsigned long flag)
+{
+        return test_bit(flag, &n->_flags);
+}
+
+static inline void of_node_set_flag(struct device_node *n, unsigned long flag)
+{
+        set_bit(flag, &n->_flags);
+}
 
-#define OF_IS_DYNAMIC(x) test_bit(OF_DYNAMIC, &x->_flags)
-#define OF_MARK_DYNAMIC(x) set_bit(OF_DYNAMIC, &x->_flags)
 
 #define HAVE_ARCH_DEVTREE_FIXUPS