diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 9af55ece198d3671f528da7ab6dd89350b24b98f..1c2cc5d48bbbe315cbc2257faae2e33df2065659 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -668,19 +668,18 @@ struct tty_driver *line_register_devfs(struct lines *set,
 	return driver;
 }
 
-static spinlock_t winch_handler_lock;
-LIST_HEAD(winch_handlers);
+static DEFINE_SPINLOCK(winch_handler_lock);
+static LIST_HEAD(winch_handlers);
 
 void lines_init(struct line *lines, int nlines)
 {
 	struct line *line;
 	int i;
 
-	spin_lock_init(&winch_handler_lock);
 	for(i = 0; i < nlines; i++){
 		line = &lines[i];
 		INIT_LIST_HEAD(&line->chan_list);
-		spin_lock_init(&line->lock);
+
 		if(line->init_str == NULL)
 			continue;
 
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index 355866af5e0b4430a76f43f6c17d905b2a544b91..b5217bd7bc41d3193fcd5df4669eab9590295658 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -51,7 +51,7 @@ static struct notifier_block reboot_notifier = {
  * itself and it can only happen on CPU 0.
  */
 
-LIST_HEAD(mc_requests);
+static LIST_HEAD(mc_requests);
 
 static void mc_work_proc(void *unused)
 {
@@ -69,7 +69,7 @@ static void mc_work_proc(void *unused)
 	}
 }
 
-DECLARE_WORK(mconsole_work, mc_work_proc, NULL);
+static DECLARE_WORK(mconsole_work, mc_work_proc, NULL);
 
 static irqreturn_t mconsole_interrupt(int irq, void *dev_id,
 				      struct pt_regs *regs)
@@ -535,7 +535,7 @@ void mconsole_stack(struct mc_request *req)
  */
 static char *notify_socket = NULL;
 
-int mconsole_init(void)
+static int mconsole_init(void)
 {
 	/* long to avoid size mismatch warnings from gcc */
 	long sock;
diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c
index 29785f643021a255653d260049e7ce53f7ebb6fb..deb24828e6a58ced766e4d1bb289110dfa8b3da3 100644
--- a/arch/um/drivers/net_kern.c
+++ b/arch/um/drivers/net_kern.c
@@ -34,7 +34,7 @@
 #define DRIVER_NAME "uml-netdev"
 
 static DEFINE_SPINLOCK(opened_lock);
-LIST_HEAD(opened);
+static LIST_HEAD(opened);
 
 static int uml_net_rx(struct net_device *dev)
 {
@@ -266,7 +266,7 @@ void uml_net_user_timer_expire(unsigned long _conn)
 }
 
 static DEFINE_SPINLOCK(devices_lock);
-static struct list_head devices = LIST_HEAD_INIT(devices);
+static LIST_HEAD(devices);
 
 static struct platform_driver uml_net_driver = {
 	.driver = {
diff --git a/arch/um/include/line.h b/arch/um/include/line.h
index e22c9e0f2d026c04460de8342d7458ed541a94cf..351d3ac30b7878e303db5d14a974b128a00c4eb0 100644
--- a/arch/um/include/line.h
+++ b/arch/um/include/line.h
@@ -58,8 +58,8 @@ struct line {
 #define LINE_INIT(str, d) \
 	{ init_str :	str, \
 	  init_pri :	INIT_STATIC, \
-	  chan_list : 	{ }, \
 	  valid :	1, \
+	  lock :	SPIN_LOCK_UNLOCKED, \
 	  buffer :	NULL, \
 	  head :	NULL, \
 	  tail :	NULL, \