diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
index 4c0220df18b4..07dfde25dbd7 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
@@ -1428,6 +1428,33 @@ struct mt76_connac_config {
 	u8 data[320];
 } __packed;
 
+static inline enum mcu_cipher_type
+mt76_connac_mcu_get_cipher(int cipher)
+{
+	switch (cipher) {
+	case WLAN_CIPHER_SUITE_WEP40:
+		return MCU_CIPHER_WEP40;
+	case WLAN_CIPHER_SUITE_WEP104:
+		return MCU_CIPHER_WEP104;
+	case WLAN_CIPHER_SUITE_TKIP:
+		return MCU_CIPHER_TKIP;
+	case WLAN_CIPHER_SUITE_AES_CMAC:
+		return MCU_CIPHER_BIP_CMAC_128;
+	case WLAN_CIPHER_SUITE_CCMP:
+		return MCU_CIPHER_AES_CCMP;
+	case WLAN_CIPHER_SUITE_CCMP_256:
+		return MCU_CIPHER_CCMP_256;
+	case WLAN_CIPHER_SUITE_GCMP:
+		return MCU_CIPHER_GCMP;
+	case WLAN_CIPHER_SUITE_GCMP_256:
+		return MCU_CIPHER_GCMP_256;
+	case WLAN_CIPHER_SUITE_SMS4:
+		return MCU_CIPHER_WAPI;
+	default:
+		return MCU_CIPHER_NONE;
+	}
+}
+
 #define to_wcid_lo(id)		FIELD_GET(GENMASK(7, 0), (u16)id)
 #define to_wcid_hi(id)		FIELD_GET(GENMASK(9, 8), (u16)id)
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 771dae905864..b29f03409587 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -85,33 +85,6 @@ struct mt7915_fw_region {
 #define HE_PHY(p, c)			u8_get_bits(c, IEEE80211_HE_PHY_##p)
 #define HE_MAC(m, c)			u8_get_bits(c, IEEE80211_HE_MAC_##m)
 
-static enum mcu_cipher_type
-mt7915_mcu_get_cipher(int cipher)
-{
-	switch (cipher) {
-	case WLAN_CIPHER_SUITE_WEP40:
-		return MCU_CIPHER_WEP40;
-	case WLAN_CIPHER_SUITE_WEP104:
-		return MCU_CIPHER_WEP104;
-	case WLAN_CIPHER_SUITE_TKIP:
-		return MCU_CIPHER_TKIP;
-	case WLAN_CIPHER_SUITE_AES_CMAC:
-		return MCU_CIPHER_BIP_CMAC_128;
-	case WLAN_CIPHER_SUITE_CCMP:
-		return MCU_CIPHER_AES_CCMP;
-	case WLAN_CIPHER_SUITE_CCMP_256:
-		return MCU_CIPHER_CCMP_256;
-	case WLAN_CIPHER_SUITE_GCMP:
-		return MCU_CIPHER_GCMP;
-	case WLAN_CIPHER_SUITE_GCMP_256:
-		return MCU_CIPHER_GCMP_256;
-	case WLAN_CIPHER_SUITE_SMS4:
-		return MCU_CIPHER_WAPI;
-	default:
-		return MCU_CIPHER_NONE;
-	}
-}
-
 static u8 mt7915_mcu_chan_bw(struct cfg80211_chan_def *chandef)
 {
 	static const u8 width_to_bw[] = {
@@ -984,7 +957,7 @@ mt7915_mcu_sta_key_tlv(struct mt7915_sta *msta, struct sk_buff *skb,
 		struct sec_key *sec_key;
 		u8 cipher;
 
-		cipher = mt7915_mcu_get_cipher(key->cipher);
+		cipher = mt76_connac_mcu_get_cipher(key->cipher);
 		if (cipher == MCU_CIPHER_NONE)
 			return -EOPNOTSUPP;
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
index ef1e1ef91611..0858b026de2d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mcu.c
@@ -93,33 +93,6 @@ struct mt7921_fw_region {
 #define PATCH_SEC_ENC_SCRAMBLE_INFO_MASK	GENMASK(15, 0)
 #define PATCH_SEC_ENC_AES_KEY_MASK		GENMASK(7, 0)
 
-static enum mcu_cipher_type
-mt7921_mcu_get_cipher(int cipher)
-{
-	switch (cipher) {
-	case WLAN_CIPHER_SUITE_WEP40:
-		return MCU_CIPHER_WEP40;
-	case WLAN_CIPHER_SUITE_WEP104:
-		return MCU_CIPHER_WEP104;
-	case WLAN_CIPHER_SUITE_TKIP:
-		return MCU_CIPHER_TKIP;
-	case WLAN_CIPHER_SUITE_AES_CMAC:
-		return MCU_CIPHER_BIP_CMAC_128;
-	case WLAN_CIPHER_SUITE_CCMP:
-		return MCU_CIPHER_AES_CCMP;
-	case WLAN_CIPHER_SUITE_CCMP_256:
-		return MCU_CIPHER_CCMP_256;
-	case WLAN_CIPHER_SUITE_GCMP:
-		return MCU_CIPHER_GCMP;
-	case WLAN_CIPHER_SUITE_GCMP_256:
-		return MCU_CIPHER_GCMP_256;
-	case WLAN_CIPHER_SUITE_SMS4:
-		return MCU_CIPHER_WAPI;
-	default:
-		return MCU_CIPHER_NONE;
-	}
-}
-
 static u8 mt7921_mcu_chan_bw(struct cfg80211_chan_def *chandef)
 {
 	static const u8 width_to_bw[] = {
@@ -483,7 +456,7 @@ mt7921_mcu_sta_key_tlv(struct mt7921_sta *msta, struct sk_buff *skb,
 		struct sec_key *sec_key;
 		u8 cipher;
 
-		cipher = mt7921_mcu_get_cipher(key->cipher);
+		cipher = mt76_connac_mcu_get_cipher(key->cipher);
 		if (cipher == MCU_CIPHER_NONE)
 			return -EOPNOTSUPP;
 
