diff --git a/drivers/hwmon/pmbus/ltc2978.c b/drivers/hwmon/pmbus/ltc2978.c
index c3b71668a47f..cc84ef514b8d 100644
--- a/drivers/hwmon/pmbus/ltc2978.c
+++ b/drivers/hwmon/pmbus/ltc2978.c
@@ -56,23 +56,18 @@ enum chips { ltc2974, ltc2975, ltc2977, ltc2978, ltc3880, ltc3882, ltc3883,
 #define LTC2975_MFR_PIN_PEAK		0xc6
 #define LTC2975_MFR_PIN_MIN		0xc7
 
-#define LTC2974_ID_REV1			0x0212
-#define LTC2974_ID_REV2			0x0213
-#define LTC2975_ID			0x0223
+#define LTC2978_ID_MASK			0xfff0
+
+#define LTC2974_ID			0x0210
+#define LTC2975_ID			0x0220
 #define LTC2977_ID			0x0130
-#define LTC2978_ID_REV1			0x0121
-#define LTC2978_ID_REV2			0x0122
-#define LTC2978A_ID			0x0124
-#define LTC3880_ID			0x4000
-#define LTC3880_ID_MASK			0xff00
+#define LTC2978_ID			0x0120
+#define LTC3880_ID			0x4020
 #define LTC3883_ID			0x4300
-#define LTC3883_ID_MASK			0xff00
 #define LTC3887_ID			0x4700
-#define LTC3887_ID_MASK			0xff00
-#define LTM4676_ID			0x4400
-#define LTM4676_ID_2			0x4480
+#define LTM4676_ID_REV1			0x4400
+#define LTM4676_ID_REV2			0x4480
 #define LTM4676A_ID			0x47e0
-#define LTM4676_ID_MASK			0xfff0
 
 #define LTC2974_NUM_PAGES		4
 #define LTC2978_NUM_PAGES		8
@@ -463,24 +458,24 @@ static int ltc2978_get_id(struct i2c_client *client)
 		return -ENODEV;
 	}
 
-	if (chip_id == LTC2974_ID_REV1 || chip_id == LTC2974_ID_REV2)
+	chip_id &= LTC2978_ID_MASK;
+
+	if (chip_id == LTC2974_ID)
 		return ltc2974;
 	else if (chip_id == LTC2975_ID)
 		return ltc2975;
 	else if (chip_id == LTC2977_ID)
 		return ltc2977;
-	else if (chip_id == LTC2978_ID_REV1 || chip_id == LTC2978_ID_REV2 ||
-		 chip_id == LTC2978A_ID)
+	else if (chip_id == LTC2978_ID)
 		return ltc2978;
-	else if ((chip_id & LTC3880_ID_MASK) == LTC3880_ID)
+	else if (chip_id == LTC3880_ID)
 		return ltc3880;
-	else if ((chip_id & LTC3883_ID_MASK) == LTC3883_ID)
+	else if (chip_id == LTC3883_ID)
 		return ltc3883;
-	else if ((chip_id & LTC3887_ID_MASK) == LTC3887_ID)
+	else if (chip_id == LTC3887_ID)
 		return ltc3887;
-	else if ((chip_id & LTM4676_ID_MASK) == LTM4676_ID ||
-		 (chip_id & LTM4676_ID_MASK) == LTM4676_ID_2 ||
-		 (chip_id & LTM4676_ID_MASK) == LTM4676A_ID)
+	else if (chip_id == LTM4676_ID_REV1 || chip_id == LTM4676_ID_REV2 ||
+		 chip_id == LTM4676A_ID)
 		return ltm4676;
 
 	dev_err(&client->dev, "Unsupported chip ID 0x%x\n", chip_id);