diff --git a/drivers/net/dsa/microchip/ksz8863_smi.c b/drivers/net/dsa/microchip/ksz8863_smi.c
index 5711a59e2ac9..582e744f7b68 100644
--- a/drivers/net/dsa/microchip/ksz8863_smi.c
+++ b/drivers/net/dsa/microchip/ksz8863_smi.c
@@ -105,8 +105,6 @@ static const struct regmap_config ksz8863_regmap_config[] = {
 		.pad_bits = 24,
 		.val_bits = 8,
 		.cache_type = REGCACHE_NONE,
-		.lock = ksz_regmap_lock,
-		.unlock = ksz_regmap_unlock,
 		.max_register = U8_MAX,
 	},
 	{
@@ -115,8 +113,6 @@ static const struct regmap_config ksz8863_regmap_config[] = {
 		.pad_bits = 24,
 		.val_bits = 16,
 		.cache_type = REGCACHE_NONE,
-		.lock = ksz_regmap_lock,
-		.unlock = ksz_regmap_unlock,
 		.max_register = U8_MAX,
 	},
 	{
@@ -125,8 +121,6 @@ static const struct regmap_config ksz8863_regmap_config[] = {
 		.pad_bits = 24,
 		.val_bits = 32,
 		.cache_type = REGCACHE_NONE,
-		.lock = ksz_regmap_lock,
-		.unlock = ksz_regmap_unlock,
 		.max_register = U8_MAX,
 	}
 };
@@ -150,7 +144,6 @@ static int ksz8863_smi_probe(struct mdio_device *mdiodev)
 
 	for (i = 0; i < __KSZ_NUM_REGMAPS; i++) {
 		rc = ksz8863_regmap_config[i];
-		rc.lock_arg = &dev->regmap_mutex;
 		rc.wr_table = chip->wr_table;
 		rc.rd_table = chip->rd_table;
 		dev->regmap[i] = devm_regmap_init(&mdiodev->dev,
diff --git a/drivers/net/dsa/microchip/ksz9477_i2c.c b/drivers/net/dsa/microchip/ksz9477_i2c.c
index 7d7560f23a73..59deb390e605 100644
--- a/drivers/net/dsa/microchip/ksz9477_i2c.c
+++ b/drivers/net/dsa/microchip/ksz9477_i2c.c
@@ -26,7 +26,6 @@ static int ksz9477_i2c_probe(struct i2c_client *i2c)
 
 	for (i = 0; i < __KSZ_NUM_REGMAPS; i++) {
 		rc = ksz9477_regmap_config[i];
-		rc.lock_arg = &dev->regmap_mutex;
 		dev->regmap[i] = devm_regmap_init_i2c(i2c, &rc);
 		if (IS_ERR(dev->regmap[i])) {
 			return dev_err_probe(&i2c->dev, PTR_ERR(dev->regmap[i]),
diff --git a/drivers/net/dsa/microchip/ksz_common.c b/drivers/net/dsa/microchip/ksz_common.c
index 1491099528be..4a383c87acf8 100644
--- a/drivers/net/dsa/microchip/ksz_common.c
+++ b/drivers/net/dsa/microchip/ksz_common.c
@@ -4381,7 +4381,6 @@ int ksz_switch_register(struct ksz_device *dev)
 	}
 
 	mutex_init(&dev->dev_mutex);
-	mutex_init(&dev->regmap_mutex);
 	mutex_init(&dev->alu_mutex);
 	mutex_init(&dev->vlan_mutex);
 
diff --git a/drivers/net/dsa/microchip/ksz_common.h b/drivers/net/dsa/microchip/ksz_common.h
index 5f0a628b9849..b9d4e0e9460d 100644
--- a/drivers/net/dsa/microchip/ksz_common.h
+++ b/drivers/net/dsa/microchip/ksz_common.h
@@ -152,7 +152,6 @@ struct ksz_device {
 	const struct ksz_chip_data *info;
 
 	struct mutex dev_mutex;		/* device access */
-	struct mutex regmap_mutex;	/* regmap access */
 	struct mutex alu_mutex;		/* ALU access */
 	struct mutex vlan_mutex;	/* vlan access */
 	const struct ksz_dev_ops *dev_ops;
@@ -600,18 +599,6 @@ static inline int ksz_prmw32(struct ksz_device *dev, int port, int offset,
 			 mask, val);
 }
 
-static inline void ksz_regmap_lock(void *__mtx)
-{
-	struct mutex *mtx = __mtx;
-	mutex_lock(mtx);
-}
-
-static inline void ksz_regmap_unlock(void *__mtx)
-{
-	struct mutex *mtx = __mtx;
-	mutex_unlock(mtx);
-}
-
 static inline bool ksz_is_ksz87xx(struct ksz_device *dev)
 {
 	return dev->chip_id == KSZ8795_CHIP_ID ||
@@ -781,8 +768,6 @@ static inline bool is_lan937x_tx_phy(struct ksz_device *dev, int port)
 		.write_flag_mask =					\
 			KSZ_SPI_OP_FLAG_MASK(KSZ_SPI_OP_WR, swp,	\
 					     regbits, regpad),		\
-		.lock = ksz_regmap_lock,				\
-		.unlock = ksz_regmap_unlock,				\
 		.reg_format_endian = REGMAP_ENDIAN_BIG,			\
 		.val_format_endian = REGMAP_ENDIAN_BIG			\
 	}
diff --git a/drivers/net/dsa/microchip/ksz_spi.c b/drivers/net/dsa/microchip/ksz_spi.c
index 8e8d83213b04..06a9e648df0c 100644
--- a/drivers/net/dsa/microchip/ksz_spi.c
+++ b/drivers/net/dsa/microchip/ksz_spi.c
@@ -65,7 +65,6 @@ static int ksz_spi_probe(struct spi_device *spi)
 
 	for (i = 0; i < __KSZ_NUM_REGMAPS; i++) {
 		rc = regmap_config[i];
-		rc.lock_arg = &dev->regmap_mutex;
 		rc.wr_table = chip->wr_table;
 		rc.rd_table = chip->rd_table;
 		dev->regmap[i] = devm_regmap_init_spi(spi, &rc);
