diff --git a/drivers/staging/fwserial/fwserial.c b/drivers/staging/fwserial/fwserial.c
index e40b480d4dc2..a9e814e5cbdd 100644
--- a/drivers/staging/fwserial/fwserial.c
+++ b/drivers/staging/fwserial/fwserial.c
@@ -78,6 +78,8 @@ static int num_ports;
 /* slab used as pool for struct fwtty_transactions */
 static struct kmem_cache *fwtty_txn_cache;
 
+struct tty_driver *fwtty_driver;
+
 struct fwtty_transaction;
 typedef void (*fwtty_transaction_cb)(struct fw_card *card, int rcode,
 				     void *data, size_t length,
@@ -2552,7 +2554,7 @@ static struct fw_descriptor fwserial_unit_directory = {
  * The management address is in the unit space region but above other known
  * address users (to keep wild writes from causing havoc)
  */
-const struct fw_address_region fwserial_mgmt_addr_region = {
+static const struct fw_address_region fwserial_mgmt_addr_region = {
 	.start = CSR_REGISTER_BASE + 0x1e0000ULL,
 	.end = 0x1000000000000ULL,
 };
diff --git a/drivers/staging/fwserial/fwserial.h b/drivers/staging/fwserial/fwserial.h
index 953ece69c10d..360280946ce4 100644
--- a/drivers/staging/fwserial/fwserial.h
+++ b/drivers/staging/fwserial/fwserial.h
@@ -352,7 +352,7 @@ struct fw_serial {
 static const char tty_dev_name[] =  TTY_DEV_NAME;
 static const char loop_dev_name[] = "fwloop";
 
-struct tty_driver *fwtty_driver;
+extern struct tty_driver *fwtty_driver;
 
 #define driver_err(s, v...)	pr_err(KBUILD_MODNAME ": " s, ##v)