diff --git a/drivers/hwmon/adt7475.c b/drivers/hwmon/adt7475.c
index a0c3851..b5fcd87 100644
--- a/drivers/hwmon/adt7475.c
+++ b/drivers/hwmon/adt7475.c
@@ -146,7 +146,7 @@
 #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx))
 #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx))
 
-static unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { 0x2c, 0x2d, 0x2e, I2C_CLIENT_END };
 
 enum chips { adt7473, adt7475, adt7476, adt7490 };
 
diff --git a/drivers/hwmon/asc7621.c b/drivers/hwmon/asc7621.c
index 89b4f3b..d2596ce 100644
--- a/drivers/hwmon/asc7621.c
+++ b/drivers/hwmon/asc7621.c
@@ -28,7 +28,7 @@
 #include <linux/mutex.h>
 
 /* Addresses to scan */
-static unsigned short normal_i2c[] = {
+static const unsigned short normal_i2c[] = {
 	0x2c, 0x2d, 0x2e, I2C_CLIENT_END
 };
 
@@ -52,7 +52,7 @@
 	u8 company_id;
 	u8 verstep_reg;
 	u8 verstep_id;
-	unsigned short *addresses;
+	const unsigned short *addresses;
 };
 
 static struct asc7621_chip asc7621_chips[] = {
diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c
index 6b4165c..0517a8f 100644
--- a/drivers/hwmon/tmp421.c
+++ b/drivers/hwmon/tmp421.c
@@ -36,8 +36,8 @@
 #include <linux/sysfs.h>
 
 /* Addresses to scan */
-static unsigned short normal_i2c[] = { 0x2a, 0x4c, 0x4d, 0x4e, 0x4f,
-				       I2C_CLIENT_END };
+static const unsigned short normal_i2c[] = { 0x2a, 0x4c, 0x4d, 0x4e, 0x4f,
+					     I2C_CLIENT_END };
 
 enum chips { tmp421, tmp422, tmp423 };