From mboxrd@z Thu Jan 1 00:00:00 1970 From: poma Subject: Re: [PATCH net] skge: dma_sync the whole receive buffer Date: Wed, 14 Aug 2013 12:20:03 +0200 Message-ID: <520B59D3.4020103@gmail.com> References: <20130810104100.0ae20aa6@nehalam.linuxnetplumber.net> <20130810.132935.1257046025460198490.davem@davemloft.net> <20130810150207.37432299@nehalam.linuxnetplumber.net> <20130813.150955.1471100759610399160.davem@davemloft.net> <20130813180036.3e639789@nehalam.linuxnetplumber.net> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: David Miller , netdev@vger.kernel.org To: Stephen Hemminger Return-path: Received: from mail-wi0-f180.google.com ([209.85.212.180]:35361 "EHLO mail-wi0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752162Ab3HNKUH (ORCPT ); Wed, 14 Aug 2013 06:20:07 -0400 Received: by mail-wi0-f180.google.com with SMTP id f14so1735499wiw.13 for ; Wed, 14 Aug 2013 03:20:06 -0700 (PDT) In-Reply-To: <20130813180036.3e639789@nehalam.linuxnetplumber.net> Sender: netdev-owner@vger.kernel.org List-ID: On 14.08.2013 03:00, Stephen Hemminger wrote: > On Tue, 13 Aug 2013 15:09:55 -0700 (PDT) > David Miller wrote: > >> From: Stephen Hemminger >> Date: Sat, 10 Aug 2013 15:02:07 -0700 >> >>> The DMA sync should sync the whole receive buffer, not just >>> part of it. Fixes log messages dma_sync_check. >>> >>> Signed-off-by: Stephen Hemminger >> >> Applied, but I really suspect that your "check DMA mapping errors" >> patch has added a serious regression. A regression much worse than >> the bug you were trying to fix with that change. > > Argh. The problem is deeper than that. Device got broken somewhere between > 3.2 and 3.4. My old Dlink card works on 3.2 but gets DMA errors on 3.4. > The config's are different though so checking that as well. > Can I help you with debugging? DGE-530T is rather solid device. poma