diff --git a/target/linux/generic/files/drivers/net/phy/ar8327.c b/target/linux/generic/files/drivers/net/phy/ar8327.c
index ff9ff5df3c3..d6749ad70ed 100644
--- a/target/linux/generic/files/drivers/net/phy/ar8327.c
+++ b/target/linux/generic/files/drivers/net/phy/ar8327.c
@@ -1210,7 +1210,7 @@ ar8327_sw_hw_apply(struct switch_dev *dev)
 	return 0;
 }
 
-int
+static int
 ar8327_sw_get_port_igmp_snooping(struct switch_dev *dev,
 				 const struct switch_attr *attr,
 				 struct switch_val *val)
@@ -1228,7 +1228,7 @@ ar8327_sw_get_port_igmp_snooping(struct switch_dev *dev,
 	return 0;
 }
 
-int
+static int
 ar8327_sw_set_port_igmp_snooping(struct switch_dev *dev,
 				 const struct switch_attr *attr,
 				 struct switch_val *val)
@@ -1246,7 +1246,7 @@ ar8327_sw_set_port_igmp_snooping(struct switch_dev *dev,
 	return 0;
 }
 
-int
+static int
 ar8327_sw_get_igmp_snooping(struct switch_dev *dev,
 			    const struct switch_attr *attr,
 			    struct switch_val *val)
@@ -1263,7 +1263,7 @@ ar8327_sw_get_igmp_snooping(struct switch_dev *dev,
 	return 0;
 }
 
-int
+static int
 ar8327_sw_set_igmp_snooping(struct switch_dev *dev,
 			    const struct switch_attr *attr,
 			    struct switch_val *val)
@@ -1279,7 +1279,7 @@ ar8327_sw_set_igmp_snooping(struct switch_dev *dev,
 	return 0;
 }
 
-int
+static int
 ar8327_sw_get_igmp_v3(struct switch_dev *dev,
 		      const struct switch_attr *attr,
 		      struct switch_val *val)
@@ -1295,7 +1295,7 @@ ar8327_sw_get_igmp_v3(struct switch_dev *dev,
 	return 0;
 }
 
-int
+static int
 ar8327_sw_set_igmp_v3(struct switch_dev *dev,
 		      const struct switch_attr *attr,
 		      struct switch_val *val)
diff --git a/target/linux/generic/files/drivers/net/phy/rtl8366_smi.c b/target/linux/generic/files/drivers/net/phy/rtl8366_smi.c
index a26fd204cb2..89fc04fa64d 100644
--- a/target/linux/generic/files/drivers/net/phy/rtl8366_smi.c
+++ b/target/linux/generic/files/drivers/net/phy/rtl8366_smi.c
@@ -254,7 +254,7 @@ static int __rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
 #define MDC_MDIO_WRITE_OP		0x0003
 #define MDC_REALTEK_PHY_ADDR		0x0
 
-int __rtl8366_mdio_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
+static int __rtl8366_mdio_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
 {
 	u32 phy_id = smi->phy_id;
 	struct mii_bus *mbus = smi->ext_mbus;
@@ -1527,7 +1527,7 @@ static void rtl8366_smi_reset(struct rtl8366_smi *smi, bool active)
 		reset_control_deassert(smi->reset);
 }
 
-int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8366_smi *smi)
+static int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8366_smi *smi)
 {
 	int sck = of_get_named_gpio(pdev->dev.of_node, "gpio-sck", 0);
 	int sda = of_get_named_gpio(pdev->dev.of_node, "gpio-sda", 0);
@@ -1577,7 +1577,7 @@ static inline int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8
 }
 #endif
 
-int rtl8366_smi_probe_plat(struct platform_device *pdev, struct rtl8366_smi *smi)
+static int rtl8366_smi_probe_plat(struct platform_device *pdev, struct rtl8366_smi *smi)
 {
 	struct rtl8366_platform_data *pdata = pdev->dev.platform_data;
 
diff --git a/target/linux/generic/files/drivers/net/phy/swconfig.c b/target/linux/generic/files/drivers/net/phy/swconfig.c
index 10dc8d0607a..71dd5b31f54 100644
--- a/target/linux/generic/files/drivers/net/phy/swconfig.c
+++ b/target/linux/generic/files/drivers/net/phy/swconfig.c
@@ -1057,7 +1057,7 @@ static struct genl_family switch_fam = {
 };
 
 #ifdef CONFIG_OF
-void
+static void
 of_switch_load_portmap(struct switch_dev *dev)
 {
 	struct device_node *port;