1 files changed, 6 insertions, 3 deletions

diff --git a/drivers/ieee1394/csr1212.c b/drivers/ieee1394/csr1212.c
index 889ea0dfe2d..c28f639823d 100644
--- a/drivers/ieee1394/csr1212.c
+++ b/drivers/ieee1394/csr1212.c
@@ -1234,6 +1234,12 @@ static int csr1212_parse_bus_info_block(struct csr1212_csr *csr)
                                          csr->private);
                 if (ret != CSR1212_SUCCESS)
                         return ret;
+
+                /* check ROM header's info_length */
+                if (i == 0 &&
+                    CSR1212_BE32_TO_CPU(csr->cache_head->data[0]) >> 24 !=
+                    bytes_to_quads(csr->bus_info_len) - 1)
+                        return CSR1212_EINVAL;
         }
 
         bi = (struct csr1212_bus_info_block_img*)csr->cache_head->data;
@@ -1250,9 +1256,6 @@ static int csr1212_parse_bus_info_block(struct csr1212_csr *csr)
                         return ret;
         }
 
-        if (bytes_to_quads(csr->bus_info_len - sizeof(csr1212_quad_t)) != bi->length)
-                return CSR1212_EINVAL;
-
 #if 0
         /* Apparently there are too many differnt wrong implementations of the
          * CRC algorithm that verifying them is moot. */