diff --git a/drivers/usb/serial/io_edgeport.c b/drivers/usb/serial/io_edgeport.c
index e5d6265eac6e12eac3c84b3c3c69432bc8e351f5..bdf8bd814a9aaf89d646545cac01da659ab475b6 100644
--- a/drivers/usb/serial/io_edgeport.c
+++ b/drivers/usb/serial/io_edgeport.c
@@ -2839,9 +2839,9 @@ static int edge_startup(struct usb_serial *serial)
 	bool interrupt_in_found;
 	bool bulk_in_found;
 	bool bulk_out_found;
-	static __u32 descriptor[3] = {	EDGE_COMPATIBILITY_MASK0,
-					EDGE_COMPATIBILITY_MASK1,
-					EDGE_COMPATIBILITY_MASK2 };
+	static const __u32 descriptor[3] = {	EDGE_COMPATIBILITY_MASK0,
+						EDGE_COMPATIBILITY_MASK1,
+						EDGE_COMPATIBILITY_MASK2 };
 
 	dev = serial->dev;
 
diff --git a/drivers/usb/serial/mos7720.c b/drivers/usb/serial/mos7720.c
index c3a314d5bdc64b65a42aff9b98f6f45868ba5123..a453965f9e9a3153ffcbb28d4a6257a4db094cd3 100644
--- a/drivers/usb/serial/mos7720.c
+++ b/drivers/usb/serial/mos7720.c
@@ -1408,7 +1408,7 @@ struct divisor_table_entry {
 /* Define table of divisors for moschip 7720 hardware	   *
  * These assume a 3.6864MHz crystal, the standard /16, and *
  * MCR.7 = 0.						   */
-static struct divisor_table_entry divisor_table[] = {
+static const struct divisor_table_entry divisor_table[] = {
 	{   50,		2304},
 	{   110,	1047},	/* 2094.545455 => 230450   => .0217 % over */
 	{   134,	857},	/* 1713.011152 => 230398.5 => .00065% under */
diff --git a/drivers/usb/serial/usb_debug.c b/drivers/usb/serial/usb_debug.c
index ca2fa5bbe17e1a9406079a89571e8dd31a083c9a..d210eff4cd33af1d33b735043f47fe971246ecf6 100644
--- a/drivers/usb/serial/usb_debug.c
+++ b/drivers/usb/serial/usb_debug.c
@@ -17,7 +17,7 @@
 
 #define USB_DEBUG_MAX_PACKET_SIZE	8
 #define USB_DEBUG_BRK_SIZE		8
-static char USB_DEBUG_BRK[USB_DEBUG_BRK_SIZE] = {
+static const char USB_DEBUG_BRK[USB_DEBUG_BRK_SIZE] = {
 	0x00,
 	0xff,
 	0x01,