From 888580ee7e7377ff8feb098a1f1150946abc105b Mon Sep 17 00:00:00 2001 From: Stephane Fillod Date: Sun, 15 Apr 2012 11:38:29 +0000 Subject: [PATCH] net: usb: smsc75xx: fix mtu [ Upstream commit a99ff7d0123b19ecad3b589480b6542716ab6b52 ] Make smsc75xx recalculate the hard_mtu after adjusting the hard_header_len. Without this, usbnet adjusts the MTU down to 1492 bytes, and the host is unable to receive standard 1500-byte frames from the device. Inspired by same fix on cdc_eem 78fb72f7936c01d5b426c03a691eca082b03f2b9. Tested on ARM/Omap3 with EVB-LAN7500-LC. Signed-off-by: Stephane Fillod Signed-off-by: David S. Miller Signed-off-by: Ben Hutchings --- drivers/net/usb/smsc75xx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/net/usb/smsc75xx.c b/drivers/net/usb/smsc75xx.c index a5b9b12ef268..7bd219bca8e2 100644 --- a/drivers/net/usb/smsc75xx.c +++ b/drivers/net/usb/smsc75xx.c @@ -1050,6 +1050,7 @@ static int smsc75xx_bind(struct usbnet *dev, struct usb_interface *intf) dev->net->ethtool_ops = &smsc75xx_ethtool_ops; dev->net->flags |= IFF_MULTICAST; dev->net->hard_header_len += SMSC75XX_TX_OVERHEAD; + dev->hard_mtu = dev->net->mtu + dev->net->hard_header_len; return 0; } -- 2.39.2