diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index ab0d0b17081677eb9a2d2f0b0ddc21c28c1fbdb6..7218c754505bf99a4a9a1888398d32d1b8aa849d 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -403,7 +403,7 @@ int chan_window_size(struct list_head *chans, unsigned short *rows_out,
 	return 0;
 }
 
-void free_one_chan(struct chan *chan, int delay_free_irq)
+static void free_one_chan(struct chan *chan, int delay_free_irq)
 {
 	list_del(&chan->list);
 
@@ -416,7 +416,7 @@ void free_one_chan(struct chan *chan, int delay_free_irq)
 	kfree(chan);
 }
 
-void free_chan(struct list_head *chans, int delay_free_irq)
+static void free_chan(struct list_head *chans, int delay_free_irq)
 {
 	struct list_head *ele, *next;
 	struct chan *chan;
@@ -497,7 +497,7 @@ struct chan_type {
 	struct chan_ops *ops;
 };
 
-struct chan_type chan_table[] = {
+static struct chan_type chan_table[] = {
 	{ "fd", &fd_ops },
 
 #ifdef CONFIG_NULL_CHAN
diff --git a/arch/um/drivers/daemon_kern.c b/arch/um/drivers/daemon_kern.c
index 507e3cbac9d38a281d357f4c40c86309ce585f9e..a61b7b46bc025b217796e0a443336b63578dbb70 100644
--- a/arch/um/drivers/daemon_kern.c
+++ b/arch/um/drivers/daemon_kern.c
@@ -18,7 +18,7 @@ struct daemon_init {
 	char *ctl_sock;
 };
 
-void daemon_init(struct net_device *dev, void *data)
+static void daemon_init(struct net_device *dev, void *data)
 {
 	struct uml_net_private *pri;
 	struct daemon_data *dpri;
@@ -64,7 +64,7 @@ static struct net_kern_info daemon_kern_info = {
 	.write			= daemon_write,
 };
 
-int daemon_setup(char *str, char **mac_out, void *data)
+static int daemon_setup(char *str, char **mac_out, void *data)
 {
 	struct daemon_init *init = data;
 	char *remain;
diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c
index 46ceb25a9959e18f235aba63b7b05a2304c33e06..6c2d4ccaf20f63cc59ed049e4f960bf546665af6 100644
--- a/arch/um/drivers/line.c
+++ b/arch/um/drivers/line.c
@@ -714,7 +714,7 @@ struct winch {
 	struct tty_struct *tty;
 };
 
-irqreturn_t winch_interrupt(int irq, void *data, struct pt_regs *unused)
+static irqreturn_t winch_interrupt(int irq, void *data, struct pt_regs *unused)
 {
 	struct winch *winch = data;
 	struct tty_struct *tty;
diff --git a/arch/um/drivers/mcast_kern.c b/arch/um/drivers/mcast_kern.c
index db5322b176e1d57621663c2acfbf0ac8e66e01f5..c9b078fba03e4812848b33f9c3c15ceee0192575 100644
--- a/arch/um/drivers/mcast_kern.c
+++ b/arch/um/drivers/mcast_kern.c
@@ -26,7 +26,7 @@ struct mcast_init {
 	int ttl;
 };
 
-void mcast_init(struct net_device *dev, void *data)
+static void mcast_init(struct net_device *dev, void *data)
 {
 	struct uml_net_private *pri;
 	struct mcast_data *dpri;
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index c9903a6345d7e1bda74ffe009443c99796aa7759..54388d10bcf98763976a8d2305fd2222e8b974a8 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -327,7 +327,7 @@ void mconsole_stop(struct mc_request *req)
 
 /* This list is populated by __initcall routines. */
 
-LIST_HEAD(mconsole_devices);
+static LIST_HEAD(mconsole_devices);
 
 void mconsole_register_dev(struct mc_device *new)
 {
@@ -561,6 +561,8 @@ void mconsole_sysrq(struct mc_request *req)
 }
 #endif
 
+#ifdef CONFIG_MODE_SKAS
+
 static void stack_proc(void *arg)
 {
 	struct task_struct *from = current, *to = arg;
@@ -574,7 +576,7 @@ static void stack_proc(void *arg)
  *  Dumps a stacks registers to the linux console.
  *  Usage stack <pid>.
  */
-void do_stack(struct mc_request *req)
+static void do_stack_trace(struct mc_request *req)
 {
 	char *ptr = req->request.data;
 	int pid_requested= -1;
@@ -605,6 +607,7 @@ void do_stack(struct mc_request *req)
 	}
 	with_console(req, stack_proc, to);
 }
+#endif /* CONFIG_MODE_SKAS */
 
 void mconsole_stack(struct mc_request *req)
 {
@@ -613,7 +616,7 @@ void mconsole_stack(struct mc_request *req)
 	 */
 	CHOOSE_MODE(mconsole_reply(req, "Sorry, this doesn't work in TT mode",
 				   1, 0),
-		    do_stack(req));
+		    do_stack_trace(req));
 }
 
 /* Changed by mconsole_setup, which is __setup, and called before SMP is
diff --git a/arch/um/drivers/ssl.c b/arch/um/drivers/ssl.c
index a32ef55cb244e1e581c9eefd0cebc8b71ec0164c..a4d6415bc8c4820340a299a58e7b340ee33cbcf0 100644
--- a/arch/um/drivers/ssl.c
+++ b/arch/um/drivers/ssl.c
@@ -33,7 +33,7 @@ static struct tty_driver *ssl_driver;
 
 #define NR_PORTS 64
 
-void ssl_announce(char *dev_name, int dev)
+static void ssl_announce(char *dev_name, int dev)
 {
 	printk(KERN_INFO "Serial line %d assigned device '%s'\n", dev,
 	       dev_name);
@@ -98,7 +98,7 @@ static int ssl_remove(int n)
 	return line_remove(serial_lines, ARRAY_SIZE(serial_lines), n);
 }
 
-int ssl_open(struct tty_struct *tty, struct file *filp)
+static int ssl_open(struct tty_struct *tty, struct file *filp)
 {
 	return line_open(serial_lines, tty);
 }
@@ -182,7 +182,7 @@ static struct console ssl_cons = {
 	.index		= -1,
 };
 
-int ssl_init(void)
+static int ssl_init(void)
 {
 	char *new_title;
 
diff --git a/arch/um/kernel/exec_kern.c b/arch/um/kernel/exec_kern.c
index 569fe8b9b0535d362d20e3b14d215f46aaae67cb..c264e1c05ab39314f8a78c90e081fe317f4e9a5a 100644
--- a/arch/um/kernel/exec_kern.c
+++ b/arch/um/kernel/exec_kern.c
@@ -33,7 +33,7 @@ void start_thread(struct pt_regs *regs, unsigned long eip, unsigned long esp)
 extern void log_exec(char **argv, void *tty);
 
 static long execve1(char *file, char __user * __user *argv,
-		    char *__user __user *env)
+		    char __user *__user *env)
 {
         long error;