@@ -67,8 +67,25 @@ int regmap_init_mem(ofnode node, struct regmap **mapp)
struct resource r;
addr_len = ofnode_read_simple_addr_cells(ofnode_get_parent(node));
+ if (addr_len < 0) {
+ debug("%s: Error while reading the addr length (ret = %d)\n",
+ ofnode_get_name(node), addr_len);
+ return addr_len;
+ }
+
size_len = ofnode_read_simple_size_cells(ofnode_get_parent(node));
+ if (size_len < 0) {
+ debug("%s: Error while reading the size length: (ret = %d)\n",
+ ofnode_get_name(node), size_len);
+ return size_len;
+ }
+
both_len = addr_len + size_len;
+ if (!both_len) {
+ debug("%s: Both addr and size length are zero\n",
+ ofnode_get_name(node));
+ return -EINVAL;
+ }
len = ofnode_read_size(node, "reg");
if (len < 0)