diff --git a/drivers/serial/21285.c b/drivers/serial/21285.c
index aec39fb261ca..b5cf39468d18 100644
--- a/drivers/serial/21285.c
+++ b/drivers/serial/21285.c
@@ -463,7 +463,7 @@ static int __init serial21285_console_setup(struct console *co, char *options)
 	return uart_set_options(port, co, baud, parity, bits, flow);
 }
 
-extern struct uart_driver serial21285_reg;
+static struct uart_driver serial21285_reg;
 
 static struct console serial21285_console =
 {
diff --git a/drivers/serial/amba-pl010.c b/drivers/serial/amba-pl010.c
index 978e12437e61..679e678c7e6a 100644
--- a/drivers/serial/amba-pl010.c
+++ b/drivers/serial/amba-pl010.c
@@ -689,7 +689,7 @@ static int __init pl010_console_setup(struct console *co, char *options)
 	return uart_set_options(port, co, baud, parity, bits, flow);
 }
 
-extern struct uart_driver amba_reg;
+static struct uart_driver amba_reg;
 static struct console amba_console = {
 	.name		= "ttyAM",
 	.write		= pl010_console_write,
diff --git a/drivers/serial/amba-pl011.c b/drivers/serial/amba-pl011.c
index 56071309744c..1ff629c74750 100644
--- a/drivers/serial/amba-pl011.c
+++ b/drivers/serial/amba-pl011.c
@@ -701,7 +701,7 @@ static int __init pl011_console_setup(struct console *co, char *options)
 	return uart_set_options(&uap->port, co, baud, parity, bits, flow);
 }
 
-extern struct uart_driver amba_reg;
+static struct uart_driver amba_reg;
 static struct console amba_console = {
 	.name		= "ttyAMA",
 	.write		= pl011_console_write,
diff --git a/drivers/serial/clps711x.c b/drivers/serial/clps711x.c
index d822896b488c..78c1f36ad9b7 100644
--- a/drivers/serial/clps711x.c
+++ b/drivers/serial/clps711x.c
@@ -525,7 +525,7 @@ static int __init clps711xuart_console_setup(struct console *co, char *options)
 	return uart_set_options(port, co, baud, parity, bits, flow);
 }
 
-extern struct uart_driver clps711x_reg;
+static struct uart_driver clps711x_reg;
 static struct console clps711x_console = {
 	.name		= "ttyCL",
 	.write		= clps711xuart_console_write,
diff --git a/drivers/serial/pxa.c b/drivers/serial/pxa.c
index eaa0af835290..672b359b07ce 100644
--- a/drivers/serial/pxa.c
+++ b/drivers/serial/pxa.c
@@ -589,8 +589,8 @@ serial_pxa_type(struct uart_port *port)
 
 #ifdef CONFIG_SERIAL_PXA_CONSOLE
 
-extern struct uart_pxa_port serial_pxa_ports[];
-extern struct uart_driver serial_pxa_reg;
+static struct uart_pxa_port serial_pxa_ports[];
+static struct uart_driver serial_pxa_reg;
 
 #define BOTH_EMPTY (UART_LSR_TEMT | UART_LSR_THRE)
 
diff --git a/drivers/serial/sa1100.c b/drivers/serial/sa1100.c
index 1225b14f6e9d..dd8aed242357 100644
--- a/drivers/serial/sa1100.c
+++ b/drivers/serial/sa1100.c
@@ -799,7 +799,7 @@ sa1100_console_setup(struct console *co, char *options)
 	return uart_set_options(&sport->port, co, baud, parity, bits, flow);
 }
 
-extern struct uart_driver sa1100_reg;
+static struct uart_driver sa1100_reg;
 static struct console sa1100_console = {
 	.name		= "ttySA",
 	.write		= sa1100_console_write,
diff --git a/drivers/serial/serial_lh7a40x.c b/drivers/serial/serial_lh7a40x.c
index 8302376800c0..d01dbe5da3b9 100644
--- a/drivers/serial/serial_lh7a40x.c
+++ b/drivers/serial/serial_lh7a40x.c
@@ -632,7 +632,7 @@ static int __init lh7a40xuart_console_setup (struct console* co, char* options)
 	return uart_set_options (port, co, baud, parity, bits, flow);
 }
 
-extern struct uart_driver lh7a40x_reg;
+static struct uart_driver lh7a40x_reg;
 static struct console lh7a40x_console = {
 	.name		= "ttyAM",
 	.write		= lh7a40xuart_console_write,