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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B94DC4167B for ; Wed, 28 Dec 2022 16:42:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235092AbiL1QmE (ORCPT ); Wed, 28 Dec 2022 11:42:04 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33704 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234979AbiL1QlV (ORCPT ); Wed, 28 Dec 2022 11:41:21 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3E94DE78 for ; Wed, 28 Dec 2022 08:35:47 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 18B9CB817F6 for ; Wed, 28 Dec 2022 16:35:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7CD29C433D2; Wed, 28 Dec 2022 16:35:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1672245342; bh=HzdJ04byUrTThSJB+sR9iIEzlUYVrAJzN34l2xYeSBg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=M8H0wGLm6fJx0qqxuJSO1xtFLFrA+nZpCrufuNujQSUWcRejQxP2yf1/R9qRibFw4 GkNh3LJIAdY+F9ihNKjDzViOj9Q/jAou2qz5qPmGtI9RMVRC14YjSWMJOXo6WvYlu0 6+ZHDfIQy6wMlOadbsMNgAOEb7my+B8hz0wwVD0I= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Yang Yingliang , Viresh Kumar , Jassi Brar , Sasha Levin Subject: [PATCH 6.0 0876/1073] mailbox: arm_mhuv2: Fix return value check in mhuv2_probe() Date: Wed, 28 Dec 2022 15:41:04 +0100 Message-Id: <20221228144351.817727578@linuxfoundation.org> X-Mailer: git-send-email 2.39.0 In-Reply-To: <20221228144328.162723588@linuxfoundation.org> References: <20221228144328.162723588@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Yang Yingliang [ Upstream commit 165b7643f2df890066b1b4e8a387888a600ca9bf ] If devm_of_iomap() fails, it returns ERR_PTR() and never return NULL, so replace NULL pointer check with IS_ERR() to fix this problem. Fixes: 5a6338cce9f4 ("mailbox: arm_mhuv2: Add driver") Signed-off-by: Yang Yingliang Acked-by: Viresh Kumar Signed-off-by: Jassi Brar Signed-off-by: Sasha Levin --- drivers/mailbox/arm_mhuv2.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/mailbox/arm_mhuv2.c b/drivers/mailbox/arm_mhuv2.c index a47aef8df52f..c6d4957c4da8 100644 --- a/drivers/mailbox/arm_mhuv2.c +++ b/drivers/mailbox/arm_mhuv2.c @@ -1062,8 +1062,8 @@ static int mhuv2_probe(struct amba_device *adev, const struct amba_id *id) int ret = -EINVAL; reg = devm_of_iomap(dev, dev->of_node, 0, NULL); - if (!reg) - return -ENOMEM; + if (IS_ERR(reg)) + return PTR_ERR(reg); mhu = devm_kzalloc(dev, sizeof(*mhu), GFP_KERNEL); if (!mhu) -- 2.35.1