drivers: mdio: remove unused bus_enable/disable

remove unused bus_enable/disable, they don't
need to be implemented, if they are not needed.

Signed-off-by: Fin Maaß <f.maass@vogl-electronic.com>

Author: maass-hamburg

drivers/ethernet/eth_smsc91x.c

@@ -846,16 +846,6 @@ struct mdio_smsc_config {
 	const struct device *eth_dev;
 };
 
-static void mdio_smsc_bus_disable(const struct device *dev)
-{
-	ARG_UNUSED(dev);
-}
-
-static void mdio_smsc_bus_enable(const struct device *dev)
-{
-	ARG_UNUSED(dev);
-}
-
 static int mdio_smsc_read(const struct device *dev, uint8_t prtad, uint8_t devad, uint16_t *data)
 {
 	const struct mdio_smsc_config *cfg = dev->config;
@@ -881,8 +871,6 @@ static int mdio_smsc_write(const struct device *dev, uint8_t prtad, uint8_t deva
 }
 
 static DEVICE_API(mdio, mdio_smsc_api) = {
-	.bus_disable = mdio_smsc_bus_disable,
-	.bus_enable = mdio_smsc_bus_enable,
 	.read = mdio_smsc_read,
 	.write = mdio_smsc_write,
 };

drivers/mdio/mdio_dwcxgmac.c

@@ -152,16 +152,6 @@ static int mdio_dwcxgmac_write(const struct device *dev, uint8_t prtad, uint8_t
 	return mdio_transfer(dev, prtad, regad, MDIO_WRITE_CMD, data, NULL);
 }
 
-static void mdio_dwcxgmac_bus_enable(const struct device *dev)
-{
-	ARG_UNUSED(dev);
-}
-
-static void mdio_dwcxgmac_bus_disable(const struct device *dev)
-{
-	ARG_UNUSED(dev);
-}
-
 static int mdio_dwcxgmac_initialize(const struct device *dev)
 {
 	struct mdio_dwcxgmac_dev_data *const data = (struct mdio_dwcxgmac_dev_data *)dev->data;
@@ -206,8 +196,6 @@ static int mdio_dwcxgmac_initialize(const struct device *dev)
 static DEVICE_API(mdio, mdio_dwcxgmac_driver_api) = {
 	.read = mdio_dwcxgmac_read,
 	.write = mdio_dwcxgmac_write,
-	.bus_enable = mdio_dwcxgmac_bus_enable,
-	.bus_disable = mdio_dwcxgmac_bus_disable,
 };
 
 #define XGMAC_SNPS_DESIGNWARE_RESET_SPEC_INIT(n) .reset = RESET_DT_SPEC_INST_GET(n),

drivers/mdio/mdio_lan865x.c

@@ -20,16 +20,6 @@ struct mdio_lan865x_config {
 	const struct device *dev;
 };
 
-static void lan865x_mdio_bus_enable(const struct device *dev)
-{
-	ARG_UNUSED(dev);
-}
-
-static void lan865x_mdio_bus_disable(const struct device *dev)
-{
-	ARG_UNUSED(dev);
-}
-
 static int lan865x_mdio_c22_read(const struct device *dev, uint8_t prtad, uint8_t regad,
 				 uint16_t *data)
 {
@@ -67,8 +57,6 @@ static DEVICE_API(mdio, mdio_lan865x_api) = {
 	.write = lan865x_mdio_c22_write,
 	.read_c45 = lan865x_mdio_c45_read,
 	.write_c45 = lan865x_mdio_c45_write,
-	.bus_enable = lan865x_mdio_bus_enable,
-	.bus_disable = lan865x_mdio_bus_disable,
 };
 
 #define MICROCHIP_LAN865X_MDIO_INIT(n)                                                             \