From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933733AbaHZA0N (ORCPT ); Mon, 25 Aug 2014 20:26:13 -0400 Received: from shards.monkeyblade.net ([149.20.54.216]:39812 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933658AbaHZA0L (ORCPT ); Mon, 25 Aug 2014 20:26:11 -0400 Date: Mon, 25 Aug 2014 17:26:10 -0700 (PDT) Message-Id: <20140825.172610.496537032439062803.davem@davemloft.net> To: jonas.jensen@gmail.com Cc: netdev@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, f.fainelli@gmail.com, eric.dumazet@gmail.com, mirqus@gmail.com Subject: Re: [PATCH v6 3/4] net: moxa: synchronize DMA memory From: David Miller In-Reply-To: <1408976552-15659-1-git-send-email-jonas.jensen@gmail.com> References: <1408976552-15659-1-git-send-email-jonas.jensen@gmail.com> X-Mailer: Mew version 6.5 on Emacs 24.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.5.7 (shards.monkeyblade.net [149.20.54.216]); Mon, 25 Aug 2014 17:26:11 -0700 (PDT) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jonas Jensen Date: Mon, 25 Aug 2014 16:22:32 +0200 > DMA memory should be synchronized before data is passed > to/from controller. > > Add dma_sync_single_for_cpu(.., DMA_FROM_DEVICE) to RX path > and dma_sync_single_for_device(.., DMA_TO_DEVICE) to TX path. > > Signed-off-by: Jonas Jensen Applied.