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=-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, USER_AGENT_GIT autolearn=unavailable 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 58D2FC4167D for ; Thu, 16 Sep 2021 17:52:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 413EE6113A for ; Thu, 16 Sep 2021 17:52:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357468AbhIPRvu (ORCPT ); Thu, 16 Sep 2021 13:51:50 -0400 Received: from mail.kernel.org ([198.145.29.99]:54416 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1355115AbhIPRlG (ORCPT ); Thu, 16 Sep 2021 13:41:06 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 22A5C6325C; Thu, 16 Sep 2021 16:52:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1631811140; bh=d2zN46M7dViF3bSk5TZ29MJ30B7PIC5iRpNK9pXKP0Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cQx4DnxO9GSj7rfci7eRiFCzv5tc63QqdaQNgMXNKODFh7V2MdK6x2ZvRGYEw6kRx Oe/SSlywi+NDGp8QxshqfxU6c7RNeMBoihWMP9xM727ybGtqVrcc/BRtAT8fstcPhO wcVRBzlBPw0kYVuUwmAyinHrd4kD8d/iEs1NPPsw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Evgeny Novikov , Kirill Shilimanov , Anton Vasilyev , Miquel Raynal Subject: [PATCH 5.14 398/432] mtd: rawnand: intel: Fix error handling in probe Date: Thu, 16 Sep 2021 18:02:27 +0200 Message-Id: <20210916155824.315987763@linuxfoundation.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20210916155810.813340753@linuxfoundation.org> References: <20210916155810.813340753@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Evgeny Novikov commit 0792ec82175ec45a0f45af6e0f2d3cb49c527cd4 upstream. ebu_nand_probe() did not invoke ebu_dma_cleanup() and clk_disable_unprepare() on some error handling paths. The patch fixes that. Found by Linux Driver Verification project (linuxtesting.org). Fixes: 0b1039f016e8 ("mtd: rawnand: Add NAND controller support on Intel LGM SoC") Signed-off-by: Evgeny Novikov Co-developed-by: Kirill Shilimanov Signed-off-by: Kirill Shilimanov Co-developed-by: Anton Vasilyev Signed-off-by: Anton Vasilyev Cc: stable@vger.kernel.org Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20210817092930.23040-1-novikov@ispras.ru Signed-off-by: Greg Kroah-Hartman --- drivers/mtd/nand/raw/intel-nand-controller.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) --- a/drivers/mtd/nand/raw/intel-nand-controller.c +++ b/drivers/mtd/nand/raw/intel-nand-controller.c @@ -631,19 +631,26 @@ static int ebu_nand_probe(struct platfor ebu_host->clk_rate = clk_get_rate(ebu_host->clk); ebu_host->dma_tx = dma_request_chan(dev, "tx"); - if (IS_ERR(ebu_host->dma_tx)) - return dev_err_probe(dev, PTR_ERR(ebu_host->dma_tx), - "failed to request DMA tx chan!.\n"); + if (IS_ERR(ebu_host->dma_tx)) { + ret = dev_err_probe(dev, PTR_ERR(ebu_host->dma_tx), + "failed to request DMA tx chan!.\n"); + goto err_disable_unprepare_clk; + } ebu_host->dma_rx = dma_request_chan(dev, "rx"); - if (IS_ERR(ebu_host->dma_rx)) - return dev_err_probe(dev, PTR_ERR(ebu_host->dma_rx), - "failed to request DMA rx chan!.\n"); + if (IS_ERR(ebu_host->dma_rx)) { + ret = dev_err_probe(dev, PTR_ERR(ebu_host->dma_rx), + "failed to request DMA rx chan!.\n"); + ebu_host->dma_rx = NULL; + goto err_cleanup_dma; + } resname = devm_kasprintf(dev, GFP_KERNEL, "addr_sel%d", cs); res = platform_get_resource_byname(pdev, IORESOURCE_MEM, resname); - if (!res) - return -EINVAL; + if (!res) { + ret = -EINVAL; + goto err_cleanup_dma; + } ebu_host->cs[cs].addr_sel = res->start; writel(ebu_host->cs[cs].addr_sel | EBU_ADDR_MASK(5) | EBU_ADDR_SEL_REGEN, ebu_host->ebu + EBU_ADDR_SEL(cs)); @@ -653,7 +660,8 @@ static int ebu_nand_probe(struct platfor mtd = nand_to_mtd(&ebu_host->chip); if (!mtd->name) { dev_err(ebu_host->dev, "NAND label property is mandatory\n"); - return -EINVAL; + ret = -EINVAL; + goto err_cleanup_dma; } mtd->dev.parent = dev; @@ -681,6 +689,7 @@ err_clean_nand: nand_cleanup(&ebu_host->chip); err_cleanup_dma: ebu_dma_cleanup(ebu_host); +err_disable_unprepare_clk: clk_disable_unprepare(ebu_host->clk); return ret;