Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758266Ab2EIGXB (ORCPT ); Wed, 9 May 2012 02:23:01 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:38911 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756184Ab2EIFxP (ORCPT ); Wed, 9 May 2012 01:53:15 -0400 Message-Id: <20120509055041.030028768@decadent.org.uk> User-Agent: quilt/0.60-1 Date: Wed, 09 May 2012 06:51:50 +0100 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Stephane Fillod , "David S. Miller" Subject: [ 081/167] [PATCH 21/26] net: usb: smsc75xx: fix mtu In-Reply-To: <20120509055029.588587017@decadent.org.uk> X-SA-Exim-Connect-IP: 192.168.4.185 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1501 Lines: 47 3.2-stable review patch. If anyone has any objections, please let me know. ------------------ From: Stephane Fillod [ 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 a5b9b12..7bd219b 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; } -- 1.7.10 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/