fdt overwritten?

Signed-off-by: surenyi <surenyi82@163.com>

packages/vsky/libdsp/driver/of/fdt.c

@@ -358,6 +358,7 @@ static void *__unflatten_device_tree(const void *blob,
 {
 	int size;
 	void *mem;
+    uint32_t *endp;
 
 	printf(" -> unflatten_device_tree()\n");
 
@@ -381,7 +382,7 @@ static void *__unflatten_device_tree(const void *blob,
 	if (size < 0)
 		return NULL;
 
-	size = ((size + 3) & (~3)); //(ALIGN(size, 4);
+	size = ((size + 3) & (~3)); 
 
 	printf("  size is %d, allocating...\n", size);
 
@@ -389,15 +390,16 @@ static void *__unflatten_device_tree(const void *blob,
 	mem = dt_alloc(size + 4, __alignof__(struct device_node));
 	memset(mem, 0, size);
 
-	*(uint32_t *)((unsigned char *)mem + size) = 0xefbeadde;
+    endp = (uint32_t *)((char *)mem + size);
+    *endp = 0xdeadbeef;
 
-	printf("  unflattening %p...\n", mem);
+	printf("  unflattening %p...(end %p)\n", mem, endp);
 
 	/* Second pass, do actual unflattening */
 	unflatten_dt_nodes(blob, mem, dad, mynodes);
-	if (*(uint32_t *)((unsigned char *)mem + size) != 0xefbeadde)
-		printf("End of tree marker overwritten: %08x\n",
-			   *(uint32_t *)((unsigned char *)mem + size));
+    if (*endp != 0xdeadbeef) {
+		printf("End of tree marker overwritten: %08x\n", *endp);
+    }
 
 	if (detached && mynodes) {
 		of_node_set_flag(*mynodes, OF_DETACHED);
@@ -418,8 +420,7 @@ static void *__unflatten_device_tree(const void *blob,
  */
 int unflatten_device_tree(void *mempos)
 {
-	__unflatten_device_tree(mempos, NULL, &of_root,
-				__alloc, 0);
+	__unflatten_device_tree(mempos, NULL, &of_root, __alloc, 0);
 
 	/* Get pointer to "/chosen" and "/aliases" nodes for use everywhere */
 	of_alias_scan(__alloc);