net: usb: ax88179_178a: restore state on resume

The hardware state was only partially restored, which meant certain
functionality was broken on resume. Do a full HW reset on resume to
fix this.
Signed-off-by: Justin Chen <justinpopo6@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

drivers/net/usb/ax88179_178a.c

@@ -465,37 +465,12 @@ static int ax88179_auto_detach(struct usbnet *dev)
 static int ax88179_resume(struct usb_interface *intf)
 {
 	struct usbnet *dev = usb_get_intfdata(intf);
-	u16 tmp16;
-	u8 tmp8;
 
 	ax88179_set_pm_mode(dev, true);
 
 	usbnet_link_change(dev, 0, 0);
 
-	/* Power up ethernet PHY */
-	tmp16 = 0;
-	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
-			  2, 2, &tmp16);
-	udelay(1000);
-
-	tmp16 = AX_PHYPWR_RSTCTL_IPRL;
-	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_PHYPWR_RSTCTL,
-			  2, 2, &tmp16);
-	msleep(200);
-
-	/* Ethernet PHY Auto Detach*/
-	ax88179_auto_detach(dev);
-
-	/* Enable clock */
-	ax88179_read_cmd(dev, AX_ACCESS_MAC,  AX_CLK_SELECT, 1, 1, &tmp8);
-	tmp8 |= AX_CLK_SELECT_ACS | AX_CLK_SELECT_BCS;
-	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_CLK_SELECT, 1, 1, &tmp8);
-	msleep(100);
-
-	/* Configure RX control register => start operation */
-	tmp16 = AX_RX_CTL_DROPCRCERR | AX_RX_CTL_IPE | AX_RX_CTL_START |
-		AX_RX_CTL_AP | AX_RX_CTL_AMALL | AX_RX_CTL_AB;
-	ax88179_write_cmd(dev, AX_ACCESS_MAC, AX_RX_CTL, 2, 2, &tmp16);
+	ax88179_reset(dev);
 
 	ax88179_set_pm_mode(dev, false);