X-Git-Url: http://git.agner.ch/gitweb/?a=blobdiff_plain;f=drivers%2Fof%2Ffdt.c;h=758b4f8b30b7d237c92b6a541f01db535d37101b;hb=0f74d82d80e653545f4190c96a25f3b6751a8370;hp=2fa024b97c4350c680e384c645dc17d0fc5dc177;hpb=b0e3636f656c98bdeded5aaa78601e3256b18d6d;p=linux-drm-fsl-dcu.git

diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 2fa024b97c43..758b4f8b30b7 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -922,8 +922,16 @@ void __init unflatten_device_tree(void)
  */
 void __init unflatten_and_copy_device_tree(void)
 {
-	int size = __be32_to_cpu(initial_boot_params->totalsize);
-	void *dt = early_init_dt_alloc_memory_arch(size,
+	int size;
+	void *dt;
+
+	if (!initial_boot_params) {
+		pr_warn("No valid device tree found, continuing without\n");
+		return;
+	}
+
+	size = __be32_to_cpu(initial_boot_params->totalsize);
+	dt = early_init_dt_alloc_memory_arch(size,
 		__alignof__(struct boot_param_header));
 
 	if (dt) {