diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index adb66a2fae18..60461568f854 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -776,7 +776,7 @@ static int get_phy_c45_ids(struct mii_bus *bus, int addr, u32 *phy_id,
 static int get_phy_id(struct mii_bus *bus, int addr, u32 *phy_id,
 		      bool is_c45, struct phy_c45_device_ids *c45_ids)
 {
-	int phy_reg;
+	int phy_reg = 0;
 
 	if (is_c45)
 		return get_phy_c45_ids(bus, addr, phy_id, c45_ids);
diff --git a/drivers/net/usb/asix_common.c b/drivers/net/usb/asix_common.c
index e39f41efda3e..55fee2b6b481 100644
--- a/drivers/net/usb/asix_common.c
+++ b/drivers/net/usb/asix_common.c
@@ -445,7 +445,7 @@ int asix_mdio_read(struct net_device *netdev, int phy_id, int loc)
 {
 	struct usbnet *dev = netdev_priv(netdev);
 	__le16 res;
-	u8 smsr;
+	u8 smsr = 0;
 	int i = 0;
 	int ret;
 
@@ -478,7 +478,7 @@ void asix_mdio_write(struct net_device *netdev, int phy_id, int loc, int val)
 {
 	struct usbnet *dev = netdev_priv(netdev);
 	__le16 res = cpu_to_le16(val);
-	u8 smsr;
+	u8 smsr = 0;
 	int i = 0;
 	int ret;
 
@@ -509,7 +509,7 @@ int asix_mdio_read_nopm(struct net_device *netdev, int phy_id, int loc)
 {
 	struct usbnet *dev = netdev_priv(netdev);
 	__le16 res;
-	u8 smsr;
+	u8 smsr = 0;
 	int i = 0;
 	int ret;
 
diff --git a/drivers/net/usb/ax88172a.c b/drivers/net/usb/ax88172a.c
index 011bd4cb546e..cc9f1356c5d8 100644
--- a/drivers/net/usb/ax88172a.c
+++ b/drivers/net/usb/ax88172a.c
@@ -183,7 +183,7 @@ static int ax88172a_reset_phy(struct usbnet *dev, int embd_phy)
 static int ax88172a_bind(struct usbnet *dev, struct usb_interface *intf)
 {
 	int ret;
-	u8 buf[ETH_ALEN];
+	u8 buf[ETH_ALEN] = {0};
 	struct ax88172a_private *priv;
 
 	usbnet_get_endpoints(dev, intf);