net: usb: asix88179_178a: de-duplicate code

Remove the duplicated code for asix88179_178a bind and reset methods.
Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/usb/ax88179_178a.c

@@ -1223,7 +1223,7 @@ static int ax88179_led_setting(struct usbnet *dev)
 	return 0;
 }
 
-static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
+static int ax88179_link_bind_or_reset(struct usbnet *dev, bool do_reset)
 {
 	u8 buf[5];
 	u16 *tmp16;
@@ -1231,12 +1231,11 @@ static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
 	struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data;
 	struct ethtool_eee eee_data;
 
-	usbnet_get_endpoints(dev, intf);
-
 	tmp16 = (u16 *)buf;
 	tmp = (u8 *)buf;
 
-	memset(ax179_data, 0, sizeof(*ax179_data));
+	if (!do_reset)
+		memset(ax179_data, 0, sizeof(*ax179_data));
 
 	/* Power up ethernet PHY */
 	*tmp16 = 0;
@@ -1249,9 +1248,13 @@ static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, tmp);
 	msleep(100);
 
+	if (do_reset)
+		ax88179_auto_detach(dev, 0);
+
 	ax88179_read_cmd(dev, AX_ACCESS_MAC, AX_NODE_ID, ETH_ALEN,
 			 ETH_ALEN, dev->net->dev_addr);
-	memcpy(dev->net->perm_addr, dev->net->dev_addr, ETH_ALEN);
+	if (!do_reset)
+		memcpy(dev->net->perm_addr, dev->net->dev_addr, ETH_ALEN);
 
 	/* RX bulk configuration */
 	memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
@@ -1266,19 +1269,21 @@ static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
 	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PAUSE_WATERLVL_HIGH,
 			  1, 1, tmp);
 
-	dev->net->netdev_ops = &ax88179_netdev_ops;
-	dev->net->ethtool_ops = &ax88179_ethtool_ops;
-	dev->net->needed_headroom = 8;
-	dev->net->max_mtu = 4088;
-
-	/* Initialize MII structure */
-	dev->mii.dev = dev->net;
-	dev->mii.mdio_read = ax88179_mdio_read;
-	dev->mii.mdio_write = ax88179_mdio_write;
-	dev->mii.phy_id_mask = 0xff;
-	dev->mii.reg_num_mask = 0xff;
-	dev->mii.phy_id = 0x03;
-	dev->mii.supports_gmii = 1;
+	if (!do_reset) {
+		dev->net->netdev_ops = &ax88179_netdev_ops;
+		dev->net->ethtool_ops = &ax88179_ethtool_ops;
+		dev->net->needed_headroom = 8;
+		dev->net->max_mtu = 4088;
+
+		/* Initialize MII structure */
+		dev->mii.dev = dev->net;
+		dev->mii.mdio_read = ax88179_mdio_read;
+		dev->mii.mdio_write = ax88179_mdio_write;
+		dev->mii.phy_id_mask = 0xff;
+		dev->mii.reg_num_mask = 0xff;
+		dev->mii.phy_id = 0x03;
+		dev->mii.supports_gmii = 1;
+	}
 
 	dev->net->features |= NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 			      NETIF_F_RXCSUM;
@@ -1330,6 +1335,13 @@ static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
 	return 0;
 }
 
+static int ax88179_bind(struct usbnet *dev, struct usb_interface *intf)
+{
+	usbnet_get_endpoints(dev, intf);
+
+	return ax88179_link_bind_or_reset(dev, false);
+}
+
 static void ax88179_unbind(struct usbnet *dev, struct usb_interface *intf)
 {
 	u16 tmp16;
@@ -1458,74 +1470,7 @@ ax88179_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags)
 
 static int ax88179_link_reset(struct usbnet *dev)
 {
-	struct ax88179_data *ax179_data = (struct ax88179_data *)dev->data;
-	u8 tmp[5], link_sts;
-	u16 mode, tmp16, delay = HZ / 10;
-	u32 tmp32 = 0x40000000;
-	unsigned long jtimeout;
-
-	jtimeout = jiffies + delay;
-	while (tmp32 & 0x40000000) {
-		mode = 0;
-		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &mode);
-		ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2,
-				  &ax179_data->rxctl);
-
-		/*link up, check the usb device control TX FIFO full or empty*/
-		ax88179_read_cmd(dev, 0x81, 0x8c, 0, 4, &tmp32);
-
-		if (time_after(jiffies, jtimeout))
-			return 0;
-	}
-
-	mode = AX_MEDIUM_RECEIVE_EN | AX_MEDIUM_TXFLOW_CTRLEN |
-	       AX_MEDIUM_RXFLOW_CTRLEN;
-
-	ax88179_read_cmd(dev, AX_ACCESS_MAC, PHYSICAL_LINK_STATUS,
-			 1, 1, &link_sts);
-
-	ax88179_read_cmd(dev, AX_ACCESS_PHY, AX88179_PHY_ID,
-			 GMII_PHY_PHYSR, 2, &tmp16);
-
-	if (!(tmp16 & GMII_PHY_PHYSR_LINK)) {
-		return 0;
-	} else if (GMII_PHY_PHYSR_GIGA == (tmp16 & GMII_PHY_PHYSR_SMASK)) {
-		mode |= AX_MEDIUM_GIGAMODE | AX_MEDIUM_EN_125MHZ;
-		if (dev->net->mtu > 1500)
-			mode |= AX_MEDIUM_JUMBO_EN;
-
-		if (link_sts & AX_USB_SS)
-			memcpy(tmp, &AX88179_BULKIN_SIZE[0], 5);
-		else if (link_sts & AX_USB_HS)
-			memcpy(tmp, &AX88179_BULKIN_SIZE[1], 5);
-		else
-			memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
-	} else if (GMII_PHY_PHYSR_100 == (tmp16 & GMII_PHY_PHYSR_SMASK)) {
-		mode |= AX_MEDIUM_PS;
-
-		if (link_sts & (AX_USB_SS | AX_USB_HS))
-			memcpy(tmp, &AX88179_BULKIN_SIZE[2], 5);
-		else
-			memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
-	} else {
-		memcpy(tmp, &AX88179_BULKIN_SIZE[3], 5);
-	}
-
-	/* RX bulk configuration */
-	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_BULKIN_QCTRL, 5, 5, tmp);
-
-	dev->rx_urb_size = (1024 * (tmp[3] + 2));
-
-	if (tmp16 & GMII_PHY_PHYSR_FULL)
-		mode |= AX_MEDIUM_FULL_DUPLEX;
-	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_MEDIUM_STATUS_MODE,
-			  2, 2, &mode);
-
-	ax179_data->eee_enabled = ax88179_chk_eee(dev);
-
-	netif_carrier_on(dev->net);
-
-	return 0;
+	return ax88179_link_bind_or_reset(dev, true);
 }
 
 static int ax88179_reset(struct usbnet *dev)