of: merge of_attach_node() & of_detach_node()

Merge common code between PowerPC and Microblaze

Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

4 files changed, 0 insertions, 126 deletions

diff --git a/arch/microblaze/include/asm/prom.h b/arch/microblaze/include/asm/prom.h
index 07d1063f9aae..6c6b386cf3c6 100644
--- a/arch/microblaze/include/asm/prom.h
+++ b/arch/microblaze/include/asm/prom.h
@@ -39,10 +39,6 @@ extern struct device_node *of_chosen;
 
 extern rwlock_t devtree_lock;	/* temporary while merging */
 
-/* For updating the device tree at runtime */
-extern void of_attach_node(struct device_node *);
-extern void of_detach_node(struct device_node *);
-
 /* Other Prototypes */
 extern int early_uartlite_console(void);
 
diff --git a/arch/microblaze/kernel/prom.c b/arch/microblaze/kernel/prom.c
index cd158ef5b583..8171282a0b0d 100644
--- a/arch/microblaze/kernel/prom.c
+++ b/arch/microblaze/kernel/prom.c
@@ -197,65 +197,6 @@ struct device_node *of_find_node_by_phandle(phandle handle)
 }
 EXPORT_SYMBOL(of_find_node_by_phandle);
 
-/*
- * Plug a device node into the tree and global list.
- */
-void of_attach_node(struct device_node *np)
-{
-	unsigned long flags;
-
-	write_lock_irqsave(&devtree_lock, flags);
-	np->sibling = np->parent->child;
-	np->allnext = allnodes;
-	np->parent->child = np;
-	allnodes = np;
-	write_unlock_irqrestore(&devtree_lock, flags);
-}
-
-/*
- * "Unplug" a node from the device tree.  The caller must hold
- * a reference to the node.  The memory associated with the node
- * is not freed until its refcount goes to zero.
- */
-void of_detach_node(struct device_node *np)
-{
-	struct device_node *parent;
-	unsigned long flags;
-
-	write_lock_irqsave(&devtree_lock, flags);
-
-	parent = np->parent;
-	if (!parent)
-		goto out_unlock;
-
-	if (allnodes == np)
-		allnodes = np->allnext;
-	else {
-		struct device_node *prev;
-		for (prev = allnodes;
-		     prev->allnext != np;
-		     prev = prev->allnext)
-			;
-		prev->allnext = np->allnext;
-	}
-
-	if (parent->child == np)
-		parent->child = np->sibling;
-	else {
-		struct device_node *prevsib;
-		for (prevsib = np->parent->child;
-		     prevsib->sibling != np;
-		     prevsib = prevsib->sibling)
-			;
-		prevsib->sibling = np->sibling;
-	}
-
-	of_node_set_flag(np, OF_DETACHED);
-
-out_unlock:
-	write_unlock_irqrestore(&devtree_lock, flags);
-}
-
 #if defined(CONFIG_DEBUG_FS) && defined(DEBUG)
 static struct debugfs_blob_wrapper flat_dt_blob;
 
diff --git a/arch/powerpc/include/asm/prom.h b/arch/powerpc/include/asm/prom.h
index 2ab9cbd98826..f384db815ea8 100644
--- a/arch/powerpc/include/asm/prom.h
+++ b/arch/powerpc/include/asm/prom.h
@@ -34,10 +34,6 @@ extern struct device_node *of_chosen;
 
 #define HAVE_ARCH_DEVTREE_FIXUPS
 
-/* For updating the device tree at runtime */
-extern void of_attach_node(struct device_node *);
-extern void of_detach_node(struct device_node *);
-
 #ifdef CONFIG_PPC32
 /*
  * PCI <-> OF matching functions
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 1ed2ec2ea05b..f954c718d7eb 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -817,65 +817,6 @@ struct device_node *of_find_next_cache_node(struct device_node *np)
 	return NULL;
 }
 
-/*
- * Plug a device node into the tree and global list.
- */
-void of_attach_node(struct device_node *np)
-{
-	unsigned long flags;
-
-	write_lock_irqsave(&devtree_lock, flags);
-	np->sibling = np->parent->child;
-	np->allnext = allnodes;
-	np->parent->child = np;
-	allnodes = np;
-	write_unlock_irqrestore(&devtree_lock, flags);
-}
-
-/*
- * "Unplug" a node from the device tree.  The caller must hold
- * a reference to the node.  The memory associated with the node
- * is not freed until its refcount goes to zero.
- */
-void of_detach_node(struct device_node *np)
-{
-	struct device_node *parent;
-	unsigned long flags;
-
-	write_lock_irqsave(&devtree_lock, flags);
-
-	parent = np->parent;
-	if (!parent)
-		goto out_unlock;
-
-	if (allnodes == np)
-		allnodes = np->allnext;
-	else {
-		struct device_node *prev;
-		for (prev = allnodes;
-		     prev->allnext != np;
-		     prev = prev->allnext)
-			;
-		prev->allnext = np->allnext;
-	}
-
-	if (parent->child == np)
-		parent->child = np->sibling;
-	else {
-		struct device_node *prevsib;
-		for (prevsib = np->parent->child;
-		     prevsib->sibling != np;
-		     prevsib = prevsib->sibling)
-			;
-		prevsib->sibling = np->sibling;
-	}
-
-	of_node_set_flag(np, OF_DETACHED);
-
-out_unlock:
-	write_unlock_irqrestore(&devtree_lock, flags);
-}
-
 #ifdef CONFIG_PPC_PSERIES
 /*
  * Fix up the uninitialized fields in a new device node: