From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 41EDFC2BB85 for ; Fri, 10 Apr 2020 04:01:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id F01BE20936 for ; Fri, 10 Apr 2020 04:01:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586491318; bh=+tVkHlpjfi2FdI+R1g0HWl2/qGo+Rc7EYvcZTCZ7d7s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=fEWk6uMVxBthVnAarNAkAN7AkOn8pQ8bbKD9zaoQ6qKLn58IPrvxlkD0KGT0EIgF+ K0SDY45IHJlpAfPX84JjdG4WbIV7DhXHTs5PopGS7Tl2pvBP76MtEQpXS1QcXVu+N9 PjIrqJ7ijGVB+hSNjU6NeLliABm5yWL/rRd/cX2c= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726657AbgDJDrS (ORCPT ); Thu, 9 Apr 2020 23:47:18 -0400 Received: from mail.kernel.org ([198.145.29.99]:57772 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727089AbgDJDrN (ORCPT ); Thu, 9 Apr 2020 23:47:13 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 00A8520BED; Fri, 10 Apr 2020 03:47:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586490433; bh=+tVkHlpjfi2FdI+R1g0HWl2/qGo+Rc7EYvcZTCZ7d7s=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=bg9zWVPicCxtiTN/SNm92ks+W3ZU3tyWYNd1YqTK8YYrsvsyCaUtxUJF00jgRtYcK QFf3r0YcXDPKIxTATbMMtlG1cj54iZGVzj/QvfqLO+nibHu2mePdSLgUPfO90VAg0B wUr3NkYEYaMZt3YmFJd/wpalvzBEpEM9ytlXZTTY= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Vladimir Oltean , Michael Walle , Mark Brown , Sasha Levin , linux-spi@vger.kernel.org Subject: [PATCH AUTOSEL 5.6 31/68] spi: spi-fsl-dspi: Avoid NULL pointer in dspi_slave_abort for non-DMA mode Date: Thu, 9 Apr 2020 23:45:56 -0400 Message-Id: <20200410034634.7731-31-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200410034634.7731-1-sashal@kernel.org> References: <20200410034634.7731-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Vladimir Oltean [ Upstream commit 3d6224e63be39ff26cf416492cb3923cd3d07dd0 ] The driver does not create the dspi->dma structure unless operating in DSPI_DMA_MODE, so it makes sense to check for that. Fixes: f4b323905d8b ("spi: Introduce dspi_slave_abort() function for NXP's dspi SPI driver") Signed-off-by: Vladimir Oltean Tested-by: Michael Walle Link: https://lore.kernel.org/r/20200318001603.9650-8-olteanv@gmail.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/spi/spi-fsl-dspi.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index 6ec2dcb8c57a6..2ce65edf16b66 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -1021,8 +1021,10 @@ static int dspi_slave_abort(struct spi_master *master) * Terminate all pending DMA transactions for the SPI working * in SLAVE mode. */ - dmaengine_terminate_sync(dspi->dma->chan_rx); - dmaengine_terminate_sync(dspi->dma->chan_tx); + if (dspi->devtype_data->trans_mode == DSPI_DMA_MODE) { + dmaengine_terminate_sync(dspi->dma->chan_rx); + dmaengine_terminate_sync(dspi->dma->chan_tx); + } /* Clear the internal DSPI RX and TX FIFO buffers */ regmap_update_bits(dspi->regmap, SPI_MCR, -- 2.20.1