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=-13.7 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 9E7D8C433E3 for ; Mon, 24 Aug 2020 09:28:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7F3272074D for ; Mon, 24 Aug 2020 09:28:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598261295; bh=1IES0gm3oirDe7IZ79Li86odL9lbx2TB4xRbdXUVcBA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ASSKRxxSQjQzLJ0AqS/ULiGYVXIRmxTs66rPMj+NKlQj7P707UTjVml7VSnypSwUc Fb4gXO/GkiIiFEgUTGppLYWVGgGJmmmI/GirhwB5SMzVQEp7+Eij+TUs2k3r75HrUp gm1MU4F7Cs13cobfeUzB3g72JEVAiFRCvOhM/rAQ= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729995AbgHXIvt (ORCPT ); Mon, 24 Aug 2020 04:51:49 -0400 Received: from mail.kernel.org ([198.145.29.99]:56912 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729956AbgHXIvl (ORCPT ); Mon, 24 Aug 2020 04:51:41 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 372752075B; Mon, 24 Aug 2020 08:51:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1598259100; bh=1IES0gm3oirDe7IZ79Li86odL9lbx2TB4xRbdXUVcBA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cvuwiHvjdudpbgNQnZAlNZO7nhNXcR5eGE7EeRyDapwym+UFx7McRAkBQrjg80CjV vlfj0TriVTyM+qvCdDibE2UihmD5THSkhjGRVq2kQnk+am8kLeM4t79KoFRzGvVGcY OB1VJ/SSjgPMjh+dghg4vxcNKZ5HwVkafMZLz4zM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Evgeny Novikov , Hans Verkuil , Mauro Carvalho Chehab , Sasha Levin Subject: [PATCH 4.9 20/39] media: vpss: clean up resources in init Date: Mon, 24 Aug 2020 10:31:19 +0200 Message-Id: <20200824082349.579327492@linuxfoundation.org> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20200824082348.445866152@linuxfoundation.org> References: <20200824082348.445866152@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Evgeny Novikov [ Upstream commit 9c487b0b0ea7ff22127fe99a7f67657d8730ff94 ] If platform_driver_register() fails within vpss_init() resources are not cleaned up. The patch fixes this issue by introducing the corresponding error handling. Found by Linux Driver Verification project (linuxtesting.org). Signed-off-by: Evgeny Novikov Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Sasha Levin --- drivers/media/platform/davinci/vpss.c | 20 ++++++++++++++++---- 1 file changed, 16 insertions(+), 4 deletions(-) diff --git a/drivers/media/platform/davinci/vpss.c b/drivers/media/platform/davinci/vpss.c index c2c68988e38ac..9884b34d6f406 100644 --- a/drivers/media/platform/davinci/vpss.c +++ b/drivers/media/platform/davinci/vpss.c @@ -519,19 +519,31 @@ static void vpss_exit(void) static int __init vpss_init(void) { + int ret; + if (!request_mem_region(VPSS_CLK_CTRL, 4, "vpss_clock_control")) return -EBUSY; oper_cfg.vpss_regs_base2 = ioremap(VPSS_CLK_CTRL, 4); if (unlikely(!oper_cfg.vpss_regs_base2)) { - release_mem_region(VPSS_CLK_CTRL, 4); - return -ENOMEM; + ret = -ENOMEM; + goto err_ioremap; } writel(VPSS_CLK_CTRL_VENCCLKEN | - VPSS_CLK_CTRL_DACCLKEN, oper_cfg.vpss_regs_base2); + VPSS_CLK_CTRL_DACCLKEN, oper_cfg.vpss_regs_base2); + + ret = platform_driver_register(&vpss_driver); + if (ret) + goto err_pd_register; + + return 0; - return platform_driver_register(&vpss_driver); +err_pd_register: + iounmap(oper_cfg.vpss_regs_base2); +err_ioremap: + release_mem_region(VPSS_CLK_CTRL, 4); + return ret; } subsys_initcall(vpss_init); module_exit(vpss_exit); -- 2.25.1