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 E6AE2C352A8 for ; Mon, 18 Apr 2022 13:43:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244663AbiDRNpP (ORCPT ); Mon, 18 Apr 2022 09:45:15 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45900 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243464AbiDRNUh (ORCPT ); Mon, 18 Apr 2022 09:20:37 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 23929D67; Mon, 18 Apr 2022 05:52:08 -0700 (PDT) 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 8BA12B80EC0; Mon, 18 Apr 2022 12:52:06 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D544AC385A7; Mon, 18 Apr 2022 12:52:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1650286325; bh=1hBGvoDUQ8oK2e2NrWc1/JduXPO8/pqmlEm+Me1KFmM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VEwhY/DWQeQZUQtY+GLrDEQ9bK0PwAmmXFqDFH4zvQZA1V3ihK8fgkYeggHoKhw1q 2MCoCa7WDDYyTafvxDNJPvJLinrW/y3snlAnGLVFya3xCxYiPzRICy7qYBgHeFpsHo vwO2qcSFxeOp/e42RWQ0ZqlicKY2gN6fa7eq2+6w= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jiasheng Jiang , Kalle Valo , Sasha Levin Subject: [PATCH 4.14 100/284] ray_cs: Check ioremap return value Date: Mon, 18 Apr 2022 14:11:21 +0200 Message-Id: <20220418121213.614449852@linuxfoundation.org> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220418121210.689577360@linuxfoundation.org> References: <20220418121210.689577360@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: Jiasheng Jiang [ Upstream commit 7e4760713391ee46dc913194b33ae234389a174e ] As the possible failure of the ioremap(), the 'local->sram' and other two could be NULL. Therefore it should be better to check it in order to avoid the later dev_dbg. Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2") Signed-off-by: Jiasheng Jiang Signed-off-by: Kalle Valo Link: https://lore.kernel.org/r/20211230022926.1846757-1-jiasheng@iscas.ac.cn Signed-off-by: Sasha Levin --- drivers/net/wireless/ray_cs.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/wireless/ray_cs.c b/drivers/net/wireless/ray_cs.c index 170cd504e8ff..1ee150563260 100644 --- a/drivers/net/wireless/ray_cs.c +++ b/drivers/net/wireless/ray_cs.c @@ -395,6 +395,8 @@ static int ray_config(struct pcmcia_device *link) goto failed; local->sram = ioremap(link->resource[2]->start, resource_size(link->resource[2])); + if (!local->sram) + goto failed; /*** Set up 16k window for shared memory (receive buffer) ***************/ link->resource[3]->flags |= @@ -409,6 +411,8 @@ static int ray_config(struct pcmcia_device *link) goto failed; local->rmem = ioremap(link->resource[3]->start, resource_size(link->resource[3])); + if (!local->rmem) + goto failed; /*** Set up window for attribute memory ***********************************/ link->resource[4]->flags |= @@ -423,6 +427,8 @@ static int ray_config(struct pcmcia_device *link) goto failed; local->amem = ioremap(link->resource[4]->start, resource_size(link->resource[4])); + if (!local->amem) + goto failed; dev_dbg(&link->dev, "ray_config sram=%p\n", local->sram); dev_dbg(&link->dev, "ray_config rmem=%p\n", local->rmem); -- 2.34.1