of/flattree: merge dt_mem_next_cell

Merge common code between PowerPC and Microblaze

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

4 files changed, 9 insertions, 16 deletions

diff --git a/arch/microblaze/kernel/prom.c b/arch/microblaze/kernel/prom.c
index 189179a9b554..e0f4c34ed0f2 100644
--- a/arch/microblaze/kernel/prom.c
+++ b/arch/microblaze/kernel/prom.c
@@ -155,14 +155,6 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
         return 1;
 }
 
-static u64 __init dt_mem_next_cell(int s, cell_t **cellp)
-{
-        cell_t *p = *cellp;
-
-        *cellp = p + s;
-        return of_read_number(p, s);
-}
-
 static int __init early_init_dt_scan_memory(unsigned long node,
                                 const char *uname, int depth, void *data)
 {
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index 78f65a4d8b03..048e3a3e9876 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -432,14 +432,6 @@ static int __init early_init_dt_scan_chosen(unsigned long node,
         return 1;
 }
 
-static u64 __init dt_mem_next_cell(int s, cell_t **cellp)
-{
-        cell_t *p = *cellp;
-
-        *cellp = p + s;
-        return of_read_number(p, s);
-}
-
 #ifdef CONFIG_PPC_PSERIES
 /*
  * Interpret the ibm,dynamic-memory property in the
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index be200be47269..ebce509b0886 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -432,6 +432,14 @@ int __init early_init_dt_scan_root(unsigned long node, const char *uname,
         return 1;
 }
 
+u64 __init dt_mem_next_cell(int s, u32 **cellp)
+{
+        u32 *p = *cellp;
+
+        *cellp = p + s;
+        return of_read_number(p, s);
+}
+
 /**
  * unflatten_device_tree - create tree of device_nodes from flat blob
  *
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index 828c3cdaea78..d1a37e56031e 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -72,6 +72,7 @@ extern void *of_get_flat_dt_prop(unsigned long node, const char *name,
 extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
 extern unsigned long of_get_flat_dt_root(void);
 extern void early_init_dt_check_for_initrd(unsigned long node);
+extern u64 dt_mem_next_cell(int s, u32 **cellp);
 
 /* Early flat tree scan hooks */
 extern int early_init_dt_scan_root(unsigned long node, const char *uname,