diff --git a/arch/microblaze/kernel/prom.c b/arch/microblaze/kernel/prom.c
index 00ee90f083438340ca174710c3c8a91ef92cb612..b15cc219b1d98ed86eeb6375b596bb3caaa789dd 100644
--- a/arch/microblaze/kernel/prom.c
+++ b/arch/microblaze/kernel/prom.c
@@ -130,7 +130,7 @@ void __init early_init_devtree(void *params)
 	 * device-tree, including the platform type, initrd location and
 	 * size, TCE reserve, and more ...
 	 */
-	of_scan_flat_dt(early_init_dt_scan_chosen, NULL);
+	of_scan_flat_dt(early_init_dt_scan_chosen, cmd_line);
 
 	/* Scan memory nodes and rebuild MEMBLOCKs */
 	memblock_init();
diff --git a/arch/mips/include/asm/prom.h b/arch/mips/include/asm/prom.h
index f29b862d9db31b45476e6dfcaccd427f17800eb4..857d9b7858ad6265a6406d355c71eb68e7a45a3e 100644
--- a/arch/mips/include/asm/prom.h
+++ b/arch/mips/include/asm/prom.h
@@ -14,9 +14,6 @@
 #ifdef CONFIG_OF
 #include <asm/bootinfo.h>
 
-/* which is compatible with the flattened device tree (FDT) */
-#define cmd_line arcs_cmdline
-
 extern int early_init_dt_scan_memory_arch(unsigned long node,
 	const char *uname, int depth, void *data);
 
diff --git a/arch/mips/kernel/prom.c b/arch/mips/kernel/prom.c
index a19811e98a411cb2b99386d74627205316070233..5b7eade41fa3866e5adc4d029688db5b0beb8570 100644
--- a/arch/mips/kernel/prom.c
+++ b/arch/mips/kernel/prom.c
@@ -83,7 +83,8 @@ void __init early_init_devtree(void *params)
 	 * device-tree, including the platform type, initrd location and
 	 * size, and more ...
 	 */
-	of_scan_flat_dt(early_init_dt_scan_chosen, NULL);
+	of_scan_flat_dt(early_init_dt_scan_chosen, arcs_cmdline);
+
 
 	/* Scan memory nodes */
 	of_scan_flat_dt(early_init_dt_scan_root, NULL);
diff --git a/arch/powerpc/kernel/prom.c b/arch/powerpc/kernel/prom.c
index e74fa12afc82b6c35da819f2b4a5f1e02ec42580..c173bee09cee739564cf68e576e795aa41ca58d0 100644
--- a/arch/powerpc/kernel/prom.c
+++ b/arch/powerpc/kernel/prom.c
@@ -691,7 +691,7 @@ void __init early_init_devtree(void *params)
 	 * device-tree, including the platform type, initrd location and
 	 * size, TCE reserve, and more ...
 	 */
-	of_scan_flat_dt(early_init_dt_scan_chosen_ppc, NULL);
+	of_scan_flat_dt(early_init_dt_scan_chosen_ppc, cmd_line);
 
 	/* Scan memory nodes and rebuild MEMBLOCKs */
 	memblock_init();
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 8b63a691a9ed2d8ec06cb1b137e301fa46f8050d..65200af29c5242644dcd0221e67bbe7b0ace99b2 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -670,7 +670,7 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
 
 	pr_debug("search \"chosen\", depth: %d, uname: %s\n", depth, uname);
 
-	if (depth != 1 ||
+	if (depth != 1 || !data ||
 	    (strcmp(uname, "chosen") != 0 && strcmp(uname, "chosen@0") != 0))
 		return 0;
 
@@ -679,16 +679,16 @@ int __init early_init_dt_scan_chosen(unsigned long node, const char *uname,
 	/* Retrieve command line */
 	p = of_get_flat_dt_prop(node, "bootargs", &l);
 	if (p != NULL && l > 0)
-		strlcpy(cmd_line, p, min((int)l, COMMAND_LINE_SIZE));
+		strlcpy(data, p, min((int)l, COMMAND_LINE_SIZE));
 
 #ifdef CONFIG_CMDLINE
 #ifndef CONFIG_CMDLINE_FORCE
 	if (p == NULL || l == 0 || (l == 1 && (*p) == 0))
 #endif
-		strlcpy(cmd_line, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
+		strlcpy(data, CONFIG_CMDLINE, COMMAND_LINE_SIZE);
 #endif /* CONFIG_CMDLINE */
 
-	pr_debug("Command line is: %s\n", cmd_line);
+	pr_debug("Command line is: %s\n", (char*)data);
 
 	/* break now */
 	return 1;