From patchwork Wed Mar 27 05:56:27 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sowjanya Komatineni X-Patchwork-Id: 10872651 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 6BDF81575 for ; Wed, 27 Mar 2019 05:59:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 56EBC26B41 for ; Wed, 27 Mar 2019 05:59:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 4B0F427E71; Wed, 27 Mar 2019 05:59:20 +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=-8.0 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,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 F298D26B41 for ; Wed, 27 Mar 2019 05:59:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732932AbfC0F5N (ORCPT ); Wed, 27 Mar 2019 01:57:13 -0400 Received: from hqemgate14.nvidia.com ([216.228.121.143]:17592 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732652AbfC0F5M (ORCPT ); Wed, 27 Mar 2019 01:57:12 -0400 Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Tue, 26 Mar 2019 22:57:15 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Tue, 26 Mar 2019 22:57:11 -0700 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Tue, 26 Mar 2019 22:57:11 -0700 Received: from HQMAIL110.nvidia.com (172.18.146.15) by HQMAIL106.nvidia.com (172.18.146.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 27 Mar 2019 05:57:11 +0000 Received: from HQMAIL103.nvidia.com (172.20.187.11) by hqmail110.nvidia.com (172.18.146.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 27 Mar 2019 05:57:11 +0000 Received: from hqnvemgw01.nvidia.com (172.20.150.20) by HQMAIL103.nvidia.com (172.20.187.11) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Wed, 27 Mar 2019 05:57:11 +0000 Received: from skomatineni-linux.nvidia.com (Not Verified[10.2.161.83]) by hqnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Tue, 26 Mar 2019 22:57:10 -0700 From: Sowjanya Komatineni To: , , , , , , , CC: , , , , Subject: [PATCH V1 06/26] spi: tegra114: terminate dma and reset on transfer timeout Date: Tue, 26 Mar 2019 22:56:27 -0700 Message-ID: <1553666207-11414-6-git-send-email-skomatineni@nvidia.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1553666207-11414-1-git-send-email-skomatineni@nvidia.com> References: <1553666207-11414-1-git-send-email-skomatineni@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1553666235; bh=i8+ndFb16vHMuRawNGbZAarN3wV094Dxo/2p5bGP8Z4=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=ZI30UY6atBAsnOp5Gv7GSj14N2NbaxSBiVIUugbyTlZ7j8usygD/+/OvPlE2r2Nac ntg7LMlUUDlE13ao8WvKP1jiOPmYWb7HgIJjl2i1gGOUZhC5w/CiS81TvgVRAnYJqa zujLPDyG53S38UA8Meev0Aw/W8yFpQgdzOpDJio9SOx7vLOhnYcrLxWCT7UidPJY1P ZMA8x8o7JHDeW8woq05JgvhV8gzoElYMGxO//FsKXadyFgZseQE4va4lg4zPEkx/Oy IPJ+FzOt5ND0rU9XJX5ZGhmiuvByvmmjRt4be4G1N9q9Lb4XkBTsdWml6sJK/bqPQq Bh5txVnWtU4eA== Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Fixes: terminate DMA and perform controller reset on transfer timeout to clear the FIFO's and errors. Signed-off-by: Sowjanya Komatineni --- drivers/spi/spi-tegra114.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/spi/spi-tegra114.c b/drivers/spi/spi-tegra114.c index 716587b663a3..0d20fc489134 100644 --- a/drivers/spi/spi-tegra114.c +++ b/drivers/spi/spi-tegra114.c @@ -871,7 +871,16 @@ static int tegra_spi_transfer_one_message(struct spi_master *master, if (WARN_ON(ret == 0)) { dev_err(tspi->dev, "spi transfer timeout, err %d\n", ret); + if (tspi->is_curr_dma_xfer && + (tspi->cur_direction & DATA_DIR_TX)) + dmaengine_terminate_all(tspi->tx_dma_chan); + if (tspi->is_curr_dma_xfer && + (tspi->cur_direction & DATA_DIR_RX)) + dmaengine_terminate_all(tspi->rx_dma_chan); ret = -EIO; + reset_control_assert(tspi->rst); + udelay(2); + reset_control_deassert(tspi->rst); goto complete_xfer; }