net: asix: Fix ASIX 88772B with driver model

Commit 14727120 ("net: asix: fix operation without eeprom")
added a special handling for ASIX 88772B that enable another
type of header. This break the driver in DM mode as the extra handling
needed in the receive path is missing.

However this new header mode is not required and only seems to
increase the code complexity, so this patch revert this part of
commit 14727120.

This also reverts commit 41d1258a
("net: asix: Fix AX88772B when used with DriverModel") of late.

Fixes: 14727120 ("net: asix: fix operation without eeprom")

Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de>
Signed-off-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>

drivers/usb/eth/asix.c

@@ -67,11 +67,8 @@
 	 AX_MEDIUM_AC | AX_MEDIUM_RE)
 
 /* AX88772 & AX88178 RX_CTL values */
-#define AX_RX_CTL_RH2M		0x0200	/* 32-bit aligned RX IP header */
-#define AX_RX_CTL_RH1M		0x0100	/* Enable RX header format type 1 */
-#define AX_RX_CTL_SO		0x0080
-#define AX_RX_CTL_AB		0x0008
-#define AX_RX_HEADER_DEFAULT	(AX_RX_CTL_RH1M | AX_RX_CTL_RH2M)
+#define AX_RX_CTL_SO			0x0080
+#define AX_RX_CTL_AB			0x0008
 
 #define AX_DEFAULT_RX_CTL	\
 	(AX_RX_CTL_SO | AX_RX_CTL_AB)
@@ -98,8 +95,6 @@
 #define FLAG_TYPE_AX88772B	(1U << 2)
 #define FLAG_EEPROM_MAC		(1U << 3) /* initial mac address in eeprom */
 
-#define ASIX_USB_VENDOR_ID	0x0b95
-#define AX88772B_USB_PRODUCT_ID	0x772b
 
 /* driver private */
 struct asix_private {
@@ -431,15 +426,10 @@ static int asix_init_common(struct ueth_data *dev, uint8_t *enetaddr)
 	int timeout = 0;
 #define TIMEOUT_RESOLUTION 50	/* ms */
 	int link_detected;
-	u32 ctl = AX_DEFAULT_RX_CTL;
 
 	debug("** %s()\n", __func__);
 
-	if ((dev->pusb_dev->descriptor.idVendor == ASIX_USB_VENDOR_ID) &&
-	    (dev->pusb_dev->descriptor.idProduct == AX88772B_USB_PRODUCT_ID))
-		ctl |= AX_RX_HEADER_DEFAULT;
-
-	if (asix_write_rx_ctl(dev, ctl) < 0)
+	if (asix_write_rx_ctl(dev, AX_DEFAULT_RX_CTL) < 0)
 		goto out_err;
 
 	if (asix_write_hwaddr_common(dev, enetaddr) < 0)
@@ -572,12 +562,6 @@ static int asix_recv(struct eth_device *eth)
 			return -1;
 		}
 
-		if ((dev->pusb_dev->descriptor.idVendor ==
-		     ASIX_USB_VENDOR_ID) &&
-		    (dev->pusb_dev->descriptor.idProduct ==
-		     AX88772B_USB_PRODUCT_ID))
-			buf_ptr += 2;
-
 		/* Notify net stack */
 		net_process_received_packet(buf_ptr + sizeof(packet_len),
 					    packet_len);
@@ -819,11 +803,6 @@ int asix_eth_recv(struct udevice *dev, int flags, uchar **packetp)
 	}
 
 	*packetp = ptr + sizeof(packet_len);
-
-	if ((ueth->pusb_dev->descriptor.idVendor == ASIX_USB_VENDOR_ID) &&
-	    (ueth->pusb_dev->descriptor.idProduct == AX88772B_USB_PRODUCT_ID))
-		*packetp += 2;
-
 	return packet_len;
 
 err: