Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 58858C433F5 for ; Mon, 15 Nov 2021 18:28:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 390BB6350E for ; Mon, 15 Nov 2021 18:28:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S241782AbhKOSa5 (ORCPT ); Mon, 15 Nov 2021 13:30:57 -0500 Received: from mail.kernel.org ([198.145.29.99]:46312 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237792AbhKORah (ORCPT ); Mon, 15 Nov 2021 12:30:37 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 0A8456329A; Mon, 15 Nov 2021 17:19:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1636996798; bh=nTfayNRE1fdmxW6PDdtDmf/WsI42Rp+eiapt1+9gAxo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ctyEJZebwBBLRcUAaoOtLM9Tq8nDS1LszgrfOEUclYrGP4aT42xDGk0g2Nu9Gjn1E GTio15gG7tj9Yy3IWecY5a7GziZXdgdvJhKiPIjTjzunuSqOLsuQi6FcUK62A0Zt/u diOa761w2jMnQ82Dq5VoLONgzY1zeyU+K3JTo/rg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Dongliang Mu , Krzysztof Kozlowski , Sasha Levin Subject: [PATCH 5.4 270/355] memory: fsl_ifc: fix leak of irq and nand_irq in fsl_ifc_ctrl_probe Date: Mon, 15 Nov 2021 18:03:14 +0100 Message-Id: <20211115165322.470995886@linuxfoundation.org> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211115165313.549179499@linuxfoundation.org> References: <20211115165313.549179499@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: Dongliang Mu [ Upstream commit 4ed2f3545c2e5acfbccd7f85fea5b1a82e9862d7 ] The error handling code of fsl_ifc_ctrl_probe is problematic. When fsl_ifc_ctrl_init fails or request_irq of fsl_ifc_ctrl_dev->irq fails, it forgets to free the irq and nand_irq. Meanwhile, if request_irq of fsl_ifc_ctrl_dev->nand_irq fails, it will still free nand_irq even if the request_irq is not successful. Fix this by refactoring the error handling code. Fixes: d2ae2e20fbdd ("driver/memory:Move Freescale IFC driver to a common driver") Signed-off-by: Dongliang Mu Link: https://lore.kernel.org/r/20210925151434.8170-1-mudongliangabcd@gmail.com Signed-off-by: Krzysztof Kozlowski Signed-off-by: Sasha Levin --- drivers/memory/fsl_ifc.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/drivers/memory/fsl_ifc.c b/drivers/memory/fsl_ifc.c index 2790258346070..84fa32f288c80 100644 --- a/drivers/memory/fsl_ifc.c +++ b/drivers/memory/fsl_ifc.c @@ -263,7 +263,7 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev) ret = fsl_ifc_ctrl_init(fsl_ifc_ctrl_dev); if (ret < 0) - goto err; + goto err_unmap_nandirq; init_waitqueue_head(&fsl_ifc_ctrl_dev->nand_wait); @@ -272,7 +272,7 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev) if (ret != 0) { dev_err(&dev->dev, "failed to install irq (%d)\n", fsl_ifc_ctrl_dev->irq); - goto err_irq; + goto err_unmap_nandirq; } if (fsl_ifc_ctrl_dev->nand_irq) { @@ -281,17 +281,16 @@ static int fsl_ifc_ctrl_probe(struct platform_device *dev) if (ret != 0) { dev_err(&dev->dev, "failed to install irq (%d)\n", fsl_ifc_ctrl_dev->nand_irq); - goto err_nandirq; + goto err_free_irq; } } return 0; -err_nandirq: - free_irq(fsl_ifc_ctrl_dev->nand_irq, fsl_ifc_ctrl_dev); - irq_dispose_mapping(fsl_ifc_ctrl_dev->nand_irq); -err_irq: +err_free_irq: free_irq(fsl_ifc_ctrl_dev->irq, fsl_ifc_ctrl_dev); +err_unmap_nandirq: + irq_dispose_mapping(fsl_ifc_ctrl_dev->nand_irq); irq_dispose_mapping(fsl_ifc_ctrl_dev->irq); err: iounmap(fsl_ifc_ctrl_dev->gregs); -- 2.33.0