From: Nisar Sayed <Nisar.Sayed@microchip.com>
Date: Tue, 1 Aug 2017 10:24:33 +0000
Subject: lan78xx: Fix to handle hard_header_len update
Patch-mainline: v4.13-rc5
Git-commit: 0573f94b1abfb42952275ca67f665dbd720b00d7
References: bsc#1084332

Fix to handle hard_header_len update

When ifconfig up/down sequence is initiated hard_header_len
get updated incrementally for each ifconfig up /down sequence,
this leads invalid hard_header_len, moving to lan78xx_bind
to have one time update of hard_header_len addresses the issue.

Signed-off-by: Nisar Sayed <Nisar.Sayed@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Acked-by: Alexander Graf <agraf@suse.de>
---
 drivers/net/usb/lan78xx.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/net/usb/lan78xx.c
+++ b/drivers/net/usb/lan78xx.c
@@ -2367,9 +2367,6 @@
 	/* Init LTM */
 	lan78xx_init_ltm(dev);
 
-	dev->net->hard_header_len += TX_OVERHEAD;
-	dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
-
 	if (dev->udev->speed == USB_SPEED_SUPER) {
 		buf = DEFAULT_BURST_CAP_SIZE / SS_USB_PKT_SIZE;
 		dev->rx_urb_size = DEFAULT_BURST_CAP_SIZE;
@@ -2855,6 +2852,9 @@
 		return ret;
 	}
 
+	dev->net->hard_header_len += TX_OVERHEAD;
+	dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len;
+
 	/* Init all registers */
 	ret = lan78xx_reset(dev);