From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755075Ab3JMQTW (ORCPT ); Sun, 13 Oct 2013 12:19:22 -0400 Received: from mga14.intel.com ([143.182.124.37]:25541 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755040Ab3JMQTS (ORCPT ); Sun, 13 Oct 2013 12:19:18 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.93,486,1378882800"; d="scan'208";a="307248542" Date: Sun, 13 Oct 2013 20:56:33 +0530 From: Vinod Koul To: Greg KH Cc: Youquan Song , dan.j.williams@intel.com, andriy.shevchenko@intel.com, mika.westerberg@intel.com, linux-kernel@vger.kernel.org, Youquan Song Subject: Re: [PATCH 1/2] dma: Add interface to calculate data transferred Message-ID: <20131013152633.GM2954@intel.com> References: <1381527738-9339-1-git-send-email-youquan.song@intel.com> <1381527738-9339-2-git-send-email-youquan.song@intel.com> <20131011133343.GB32689@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20131011133343.GB32689@kroah.com> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Oct 11, 2013 at 06:33:43AM -0700, Greg KH wrote: > On Fri, Oct 11, 2013 at 05:42:17PM -0400, Youquan Song wrote: > > Currently, the DMA channel calculates its data transferred only at network > > device driver. When other devices like UART or SPI etc, transfers data by DMA > > mode, but it always shows 0 at /sys/class/dma/dma0chan*/bytes_transferred. > > Is that really a problem? I have never heard anyone complaining about > it. Where are the reports of this? Right, am not still getting the point on what is the problem that this series is trying to fix.. ~Vinod