From patchwork Wed May 12 14:43:46 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 436469 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=-19.4 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=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 A2929C4360C for ; Wed, 12 May 2021 16:41:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6C59161040 for ; Wed, 12 May 2021 16:41:56 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238494AbhELQim (ORCPT ); Wed, 12 May 2021 12:38:42 -0400 Received: from mail.kernel.org ([198.145.29.99]:44582 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237333AbhELQaF (ORCPT ); Wed, 12 May 2021 12:30:05 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 0BC4D6193E; Wed, 12 May 2021 15:57:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620835032; bh=LHJQggMCwBFOT+IBWn15tQ/S0akoIxyp0tDCh+0y/eI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WvBX9fPr211YH6jLMfYYBhGD2TQuo9HDGh+MltkA6Z5ga4OJGScy4xFVyhSf42/b7 BfeHLH9M3JkNLtiJ94FkrXAKvkHc6v9mqNXNIgLVNN1sMqyCYGUjbLqYPMH257QJ/h Yd++5Y62yYoEALGBj2DS7b4e+FMmpPzoyZFf5Sv8= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dan Carpenter , Miquel Raynal , Sasha Levin Subject: [PATCH 5.12 180/677] mtd: rawnand: fsmc: Fix error code in fsmc_nand_probe() Date: Wed, 12 May 2021 16:43:46 +0200 Message-Id: <20210512144843.217015801@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210512144837.204217980@linuxfoundation.org> References: <20210512144837.204217980@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Dan Carpenter [ Upstream commit e7a97528e3c787802d8c643d6ab2f428511bb047 ] If dma_request_channel() fails then the probe fails and it should return a negative error code, but currently it returns success. fixes: 4774fb0a48aa ("mtd: nand/fsmc: Add DMA support") Signed-off-by: Dan Carpenter Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/YCqaOZ83OvPOzLwh@mwanda Signed-off-by: Sasha Levin --- drivers/mtd/nand/raw/fsmc_nand.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/mtd/nand/raw/fsmc_nand.c b/drivers/mtd/nand/raw/fsmc_nand.c index 0101c0fab50a..a24e2f57fa68 100644 --- a/drivers/mtd/nand/raw/fsmc_nand.c +++ b/drivers/mtd/nand/raw/fsmc_nand.c @@ -1077,11 +1077,13 @@ static int __init fsmc_nand_probe(struct platform_device *pdev) host->read_dma_chan = dma_request_channel(mask, filter, NULL); if (!host->read_dma_chan) { dev_err(&pdev->dev, "Unable to get read dma channel\n"); + ret = -ENODEV; goto disable_clk; } host->write_dma_chan = dma_request_channel(mask, filter, NULL); if (!host->write_dma_chan) { dev_err(&pdev->dev, "Unable to get write dma channel\n"); + ret = -ENODEV; goto release_dma_read_chan; } }