diff options
| -rw-r--r-- | drivers/core/regmap.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/core/regmap.c b/drivers/core/regmap.c index 77f6f52..4ebab23 100644 --- a/drivers/core/regmap.c +++ b/drivers/core/regmap.c @@ -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) |