From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755005AbaHFN4x (ORCPT ); Wed, 6 Aug 2014 09:56:53 -0400 Received: from smtp6-v.fe.bosch.de ([139.15.237.11]:48691 "EHLO smtp6-v.fe.bosch.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753837AbaHFN4u (ORCPT ); Wed, 6 Aug 2014 09:56:50 -0400 From: "Koehrer Mathias (ETAS/ESW5)" To: Nick Krause CC: "linux-kernel@vger.kernel.org" , "netdev@vger.kernel.org" Subject: [PATCH] Fix e1000e with Intel 82572EI that has no hardware timestamp support Thread-Topic: [PATCH] Fix e1000e with Intel 82572EI that has no hardware timestamp support Thread-Index: Ac+xfLm8Sv3R9mfmQWWnp65ieYoBJg== Date: Wed, 6 Aug 2014 13:56:43 +0000 Message-ID: Accept-Language: de-DE, en-US Content-Language: de-DE X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.5.148.126] Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 X-TM-AS-MML: disable Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from base64 to 8bit by mail.home.local id s76Dv0qb011513 With the Intel 82527EI (driver: e1000e) there is an issue when running the ptpd2 program, that leads to a kernel oops. The reason is here that in e1000_xmit_frame() a work queue will be scheduled that has not been initialized in this case. The work queue "tx_hwstamp_work" will only be initialized if adapter->flags & FLAG_HAS_HW_TIMESTAMP set. This check is missing in e1000_xmit_frame(). The following patch adds the missing check. Signed-off-by: Mathias Koehrer --- drivers/net/ethernet/intel/e1000e/netdev.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) Index: linux-3.12.26/drivers/net/ethernet/intel/e1000e/netdev.c =================================================================== --- linux-3.12.26.orig/drivers/net/ethernet/intel/e1000e/netdev.c 2014-08-04 10:56:56.000000000 +0200 +++ linux-3.12.26/drivers/net/ethernet/intel/e1000e/netdev.c 2014-08-06 15:15:42.000000000 +0200 @@ -5549,7 +5549,8 @@ count = e1000_tx_map(tx_ring, skb, first, adapter->tx_fifo_limit, nr_frags); if (count) { - if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && + if ((adapter->flags & FLAG_HAS_HW_TIMESTAMP) && + unlikely((skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && !adapter->tx_hwtstamp_skb)) { skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; tx_flags |= E1000_TX_FLAGS_HWTSTAMP; -- {.n++%ݶw{.n+{G{ayʇڙ,jfhz_(階ݢj"mG?&~iOzv^m ?I