From patchwork Wed May 22 03:21:03 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Peng Ma X-Patchwork-Id: 10954737 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7715C14B6 for ; Wed, 22 May 2019 03:29:11 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6814328AA2 for ; Wed, 22 May 2019 03:29:11 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5970B28A61; Wed, 22 May 2019 03:29:11 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 13FFE28A61 for ; Wed, 22 May 2019 03:29:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728299AbfEVD3E (ORCPT ); Tue, 21 May 2019 23:29:04 -0400 Received: from inva021.nxp.com ([92.121.34.21]:45342 "EHLO inva021.nxp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727733AbfEVD3E (ORCPT ); Tue, 21 May 2019 23:29:04 -0400 Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id C452F20002D; Wed, 22 May 2019 05:29:02 +0200 (CEST) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 365F7200033; Wed, 22 May 2019 05:29:00 +0200 (CEST) Received: from titan.ap.freescale.net (TITAN.ap.freescale.net [10.192.208.233]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id 8BAE1402E7; Wed, 22 May 2019 11:28:56 +0800 (SGT) From: Peng Ma To: vkoul@kernel.org, dan.j.williams@intel.com Cc: dmaengine@vger.kernel.org, linux-kernel@vger.kernel.org, Peng Ma Subject: [V3 2/2] dmaengine: fsl-qdma: Add improvement Date: Wed, 22 May 2019 03:21:03 +0000 Message-Id: <20190522032103.13713-2-peng.ma@nxp.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20190522032103.13713-1-peng.ma@nxp.com> References: <20190522032103.13713-1-peng.ma@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP Sender: dmaengine-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: dmaengine@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP When an error occurs we should clean the error register then to return Signed-off-by: Peng Ma --- changed for V3: - no changed. drivers/dma/fsl-qdma.c | 4 +--- 1 files changed, 1 insertions(+), 3 deletions(-) diff --git a/drivers/dma/fsl-qdma.c b/drivers/dma/fsl-qdma.c index da8fdf5..8e341c0 100644 --- a/drivers/dma/fsl-qdma.c +++ b/drivers/dma/fsl-qdma.c @@ -703,10 +703,8 @@ static irqreturn_t fsl_qdma_error_handler(int irq, void *dev_id) intr = qdma_readl(fsl_qdma, status + FSL_QDMA_DEDR); - if (intr) { + if (intr) dev_err(fsl_qdma->dma_dev.dev, "DMA transaction error!\n"); - return IRQ_NONE; - } qdma_writel(fsl_qdma, FSL_QDMA_DEDR_CLEAR, status + FSL_QDMA_DEDR); return IRQ_HANDLED;