[ieee1394]: Fix problem with extended ROM regions.

Submitted-by: Steve Kinneberg <kberg@linux1394.org>
Signed-off-by: Ben Collins <bcollins@debian.org>

drivers/ieee1394/csr.c

@@ -251,8 +251,7 @@ static void add_host(struct hpsb_host *host)
 
 	csr1212_init_local_csr(host->csr.rom, bus_info, host->csr.max_rom);
 
-	host->csr.rom->max_rom = host->csr.max_rom;
-
+	static const int mr_map[] = { 4, 64, 1024, 0 };
 	root = host->csr.rom->root_kv;
 
 	if(csr1212_attach_keyval_to_directory(root, node_cap) != CSR1212_SUCCESS) {

drivers/ieee1394/csr1212.c

@@ -206,7 +206,9 @@ struct csr1212_csr *csr1212_create_csr(struct csr1212_bus_ops *ops,
 void csr1212_init_local_csr(struct csr1212_csr *csr,
 			    const u_int32_t *bus_info_data, int max_rom)
 {
-	csr->max_rom = max_rom;
+	static const int mr_map[] = { 4, 64, 1024, 0 };
+
+	csr->max_rom = mr_map[max_rom];
 	memcpy(csr->bus_info_data, bus_info_data, csr->bus_info_len);
 }