From patchwork Thu Jan 7 14:31:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 358850 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=-18.8 required=3.0 tests=BAYES_00,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 DB7A4C433E9 for ; Thu, 7 Jan 2021 14:38:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A81F8217A0 for ; Thu, 7 Jan 2021 14:38:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728887AbhAGObj (ORCPT ); Thu, 7 Jan 2021 09:31:39 -0500 Received: from mail.kernel.org ([198.145.29.99]:45348 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728873AbhAGObi (ORCPT ); Thu, 7 Jan 2021 09:31:38 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 7F3CB2339E; Thu, 7 Jan 2021 14:31:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1610029863; bh=bDaH0qxvKMZ3wwj/g24R05lfirUzzJc70cmssiyJNZU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Yc0Fp64bkmd6857FE9Ft+PmVPMviYcegIoSjnZ9WLkqXpe3871UgNZQ5B3YfdPiKO xotYvO+5O2runOLKAqpy3DzTbyPcxUmDEjbTgWG77Vf9Pvv0T4Z5EhBc4+vZmVy7DH 275Tj+j8Gc4J3f8zuKlt4kgEqqHkNIG7AQjlqzWU= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Qinglang Miao , Michael Ellerman , Sasha Levin Subject: [PATCH 4.14 22/29] powerpc: sysdev: add missing iounmap() on error in mpic_msgr_probe() Date: Thu, 7 Jan 2021 15:31:37 +0100 Message-Id: <20210107143056.114499958@linuxfoundation.org> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210107143052.973437064@linuxfoundation.org> References: <20210107143052.973437064@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Qinglang Miao [ Upstream commit ffa1797040c5da391859a9556be7b735acbe1242 ] I noticed that iounmap() of msgr_block_addr before return from mpic_msgr_probe() in the error handling case is missing. So use devm_ioremap() instead of just ioremap() when remapping the message register block, so the mapping will be automatically released on probe failure. Signed-off-by: Qinglang Miao Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20201028091551.136400-1-miaoqinglang@huawei.com Signed-off-by: Sasha Levin --- arch/powerpc/sysdev/mpic_msgr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/powerpc/sysdev/mpic_msgr.c b/arch/powerpc/sysdev/mpic_msgr.c index 280e964e1aa88..497e86cfb12e0 100644 --- a/arch/powerpc/sysdev/mpic_msgr.c +++ b/arch/powerpc/sysdev/mpic_msgr.c @@ -196,7 +196,7 @@ static int mpic_msgr_probe(struct platform_device *dev) /* IO map the message register block. */ of_address_to_resource(np, 0, &rsrc); - msgr_block_addr = ioremap(rsrc.start, resource_size(&rsrc)); + msgr_block_addr = devm_ioremap(&dev->dev, rsrc.start, resource_size(&rsrc)); if (!msgr_block_addr) { dev_err(&dev->dev, "Failed to iomap MPIC message registers"); return -EFAULT;