From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754951AbbLEQ7z (ORCPT ); Sat, 5 Dec 2015 11:59:55 -0500 Received: from mail-lf0-f66.google.com ([209.85.215.66]:33594 "EHLO mail-lf0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754222AbbLEQ5O (ORCPT ); Sat, 5 Dec 2015 11:57:14 -0500 From: Anton Bondarenko To: broonie@kernel.org, b38343@freescale.com, s.hauer@pengutronix.de Cc: linux-kernel@vger.kernel.org, linux-spi@vger.kernel.org, linux-arm-kernel@lists.infradead.org, vladimir_zapolskiy@mentor.com, jiada_wang@mentor.com Subject: [PATCH v5 01/11] spi: imx: terminate RX DMA transaction in case of TX DMA timeout Date: Sat, 5 Dec 2015 17:56:59 +0100 Message-Id: <1449334629-4715-2-git-send-email-anton.bondarenko.sama@gmail.com> X-Mailer: git-send-email 2.6.3 In-Reply-To: <1449334629-4715-1-git-send-email-anton.bondarenko.sama@gmail.com> References: <1449334629-4715-1-git-send-email-anton.bondarenko.sama@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Not only TX DMA should be terminated, but RX DMA also. It's required to avoid accidential DMA memory writes from RX DMA channel and properly terminate transaction. Signed-off-by: Anton Bondarenko --- drivers/spi/spi-imx.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-imx.c b/drivers/spi/spi-imx.c index 0e5723a..fb3bcc4 100644 --- a/drivers/spi/spi-imx.c +++ b/drivers/spi/spi-imx.c @@ -958,6 +958,7 @@ static int spi_imx_dma_transfer(struct spi_imx_data *spi_imx, dev_driver_string(&master->dev), dev_name(&master->dev)); dmaengine_terminate_all(master->dma_tx); + dmaengine_terminate_all(master->dma_rx); } else { timeout = wait_for_completion_timeout( &spi_imx->dma_rx_completion, IMX_DMA_TIMEOUT); -- 2.6.3