From patchwork Mon Sep 14 12:02:38 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: hamzahfrq.sub@gmail.com X-Patchwork-Id: 7174921 Return-Path: X-Original-To: patchwork-dmaengine@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id AA40F9F314 for ; Mon, 14 Sep 2015 12:03:16 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id C53CD20717 for ; Mon, 14 Sep 2015 12:03:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 08E472073F for ; Mon, 14 Sep 2015 12:03:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751979AbbINMDH (ORCPT ); Mon, 14 Sep 2015 08:03:07 -0400 Received: from mail-wi0-f169.google.com ([209.85.212.169]:37404 "EHLO mail-wi0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751942AbbINMDG (ORCPT ); Mon, 14 Sep 2015 08:03:06 -0400 Received: by wicfx3 with SMTP id fx3so129480788wic.0 for ; Mon, 14 Sep 2015 05:03:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=from:to:cc:subject:date:message-id; bh=dWmJFsdjIFyq8/9ly44tDAkLHjURaJdjM9om32Jf1X4=; b=f1bRR8qY/4tzmlttIuZ4KpqiOBrLC5jTh29KbAOVPACRYPtnKRBxVAtT+qVEQk8MfX GHC8EsRnT8Od+fN2JbNy0MEtIF5GtQLvEy/EdASPPBeeLuarEEyaeflvc3Pm48PHsB91 95RezK10Gc9wl3TffI13M1rQlJzb5a0ZcRv+16w1/psTt860Dvd3PvofKLta6NGd1xDf U6ZKpuYQ0qsweMgf4EX3Fp70WpaI1DFpEMI72orUwzbi7j8xilQmBznTXNq9jJ1zuP5m F7/b2BKTmb740ah8yv4AsIBPvmc/1glbS9RSTVZEI065Uine5T07lJd3GkvOoabE3MJ3 aOtg== X-Received: by 10.180.102.195 with SMTP id fq3mr8123161wib.7.1442232185671; Mon, 14 Sep 2015 05:03:05 -0700 (PDT) Received: from ubuntu-VirtualBox.fritz.box (p4FDCD8DE.dip0.t-ipconnect.de. [79.220.216.222]) by smtp.googlemail.com with ESMTPSA id lz10sm15166706wjb.48.2015.09.14.05.02.54 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 14 Sep 2015 05:02:55 -0700 (PDT) From: hamzahfrq.sub@gmail.com To: laurent.pinchart+renesas@ideasonboard.com Cc: dmaengine@vger.kernel.org, j@bitron.ch, joe@perches.com, kuninori.morimoto.gx@renesas.com, broonie@kernel.org, geert+renesas@glider.be, vinod.koul@intel.com, Muhammad Hamza Farooq Subject: [PATCH 5/6] dma: rcar-dma: warn if transfer cannot start as TE = 1 Date: Mon, 14 Sep 2015 14:02:38 +0200 Message-Id: <1442232160-2615-6-git-send-email-hamzahfrq.sub@gmail.com> X-Mailer: git-send-email 1.7.9.5 Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Spam-Status: No, score=-6.8 required=5.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, T_DKIM_INVALID, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Muhammad Hamza Farooq Signed-off-by: Muhammad Hamza Farooq --- drivers/dma/sh/rcar-dmac.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe dmaengine" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html diff --git a/drivers/dma/sh/rcar-dmac.c b/drivers/dma/sh/rcar-dmac.c index 3af1846..6531ee5 100644 --- a/drivers/dma/sh/rcar-dmac.c +++ b/drivers/dma/sh/rcar-dmac.c @@ -327,7 +327,8 @@ static void rcar_dmac_chan_start_xfer(struct rcar_dmac_chan *chan) struct rcar_dmac_desc *desc = chan->desc.running; u32 chcr = desc->chcr; - WARN_ON_ONCE(rcar_dmac_chan_is_busy(chan)); + WARN_ON_ONCE(rcar_dmac_chan_is_busy(chan) || + rcar_dmac_last_tx_complete(chan)); if (chan->mid_rid >= 0) rcar_dmac_chan_write(chan, RCAR_DMARS, chan->mid_rid);