diff --git a/drivers/net/ethernet/renesas/sh_eth.c b/drivers/net/ethernet/renesas/sh_eth.c
index b813ef4ea51af..bf002c2b5d791 100644
--- a/drivers/net/ethernet/renesas/sh_eth.c
+++ b/drivers/net/ethernet/renesas/sh_eth.c
@@ -447,7 +447,7 @@ static u16 sh_eth_tsu_get_offset(struct sh_eth_private *mdp, int enum_index)
 static void sh_eth_tsu_write(struct sh_eth_private *mdp, u32 data,
 			     int enum_index)
 {
-	u16 offset = mdp->reg_offset[enum_index];
+	u16 offset = sh_eth_tsu_get_offset(mdp, enum_index);
 
 	if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
 		return;
@@ -457,7 +457,7 @@ static void sh_eth_tsu_write(struct sh_eth_private *mdp, u32 data,
 
 static u32 sh_eth_tsu_read(struct sh_eth_private *mdp, int enum_index)
 {
-	u16 offset = mdp->reg_offset[enum_index];
+	u16 offset = sh_eth_tsu_get_offset(mdp, enum_index);
 
 	if (WARN_ON(offset == SH_ETH_OFFSET_INVALID))
 		return ~0U;