From patchwork Mon Sep 13 13:11:53 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kroah-Hartman X-Patchwork-Id: 510524 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=-19.1 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, 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 E9435C433EF for ; Mon, 13 Sep 2021 14:24:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CF7EC60EC0 for ; Mon, 13 Sep 2021 14:24:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344392AbhIMOZ0 (ORCPT ); Mon, 13 Sep 2021 10:25:26 -0400 Received: from mail.kernel.org ([198.145.29.99]:44940 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345271AbhIMOW2 (ORCPT ); Mon, 13 Sep 2021 10:22:28 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 3B3A9610CF; Mon, 13 Sep 2021 13:47:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1631540850; bh=yZD8SegFW9VZXM1gnQs7nsGAbgf53JK5MyEPkIN/eAk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qPMh6wzXySn1csYLXVsWAJ5qKBm7KzxZsXU1K1gvc/30oTOu/JSgj5iIPCiB2oCZ3 rr1TV9LWJ2IwkpY4pr9/TjttZujxnku/R+SGPtpTGwisK5yF6Bg5Zi9kLFWTvTByKt LvYShZJLGOPMdRRo6vx0bxruNPplByIIybCkKmgI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Sanchayan Maity , Vladimir Oltean , Peter Ujfalusi , Vinod Koul , Tony Lindgren , Mark Brown , Sasha Levin Subject: [PATCH 5.14 059/334] spi: spi-fsl-dspi: Fix issue with uninitialized dma_slave_config Date: Mon, 13 Sep 2021 15:11:53 +0200 Message-Id: <20210913131115.413941795@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210913131113.390368911@linuxfoundation.org> References: <20210913131113.390368911@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Tony Lindgren [ Upstream commit 209ab223ad5b18e437289235e3bde12593b94ac4 ] Depending on the DMA driver being used, the struct dma_slave_config may need to be initialized to zero for the unused data. For example, we have three DMA drivers using src_port_window_size and dst_port_window_size. If these are left uninitialized, it can cause DMA failures. For spi-fsl-dspi, this is probably not currently an issue but is still good to fix though. Fixes: 90ba37033cb9 ("spi: spi-fsl-dspi: Add DMA support for Vybrid") Cc: Sanchayan Maity Cc: Vladimir Oltean Cc: Peter Ujfalusi Cc: Vinod Koul Signed-off-by: Tony Lindgren Acked-by: Vladimir Oltean Link: https://lore.kernel.org/r/20210810081727.19491-1-tony@atomide.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- drivers/spi/spi-fsl-dspi.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index fb45e6af6638..fd004c9db9dc 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -530,6 +530,7 @@ static int dspi_request_dma(struct fsl_dspi *dspi, phys_addr_t phy_addr) goto err_rx_dma_buf; } + memset(&cfg, 0, sizeof(cfg)); cfg.src_addr = phy_addr + SPI_POPR; cfg.dst_addr = phy_addr + SPI_PUSHR; cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES;