From patchwork Mon Mar 13 06:58:23 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dongliang Mu X-Patchwork-Id: 663332 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 ABB4DC6FD19 for ; Mon, 13 Mar 2023 07:01:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229704AbjCMHBw (ORCPT ); Mon, 13 Mar 2023 03:01:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39050 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229553AbjCMHBu (ORCPT ); Mon, 13 Mar 2023 03:01:50 -0400 Received: from hust.edu.cn (mail.hust.edu.cn [202.114.0.240]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 298F7305EE; Mon, 13 Mar 2023 00:01:48 -0700 (PDT) Received: from localhost.localdomain ([172.16.0.254]) (user=dzm91@hust.edu.cn mech=LOGIN bits=0) by mx1.hust.edu.cn with ESMTP id 32D7107A005037-32D7107E005037 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 13 Mar 2023 15:01:07 +0800 From: Dongliang Mu To: Kalle Valo , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: Dongliang Mu , linux-wireless@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] wifi: ray_cs: add sanity check on local->sram/rmem/amem Date: Mon, 13 Mar 2023 14:58:23 +0800 Message-Id: <20230313065823.256731-2-dzm91@hust.edu.cn> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230313065823.256731-1-dzm91@hust.edu.cn> References: <20230313065823.256731-1-dzm91@hust.edu.cn> MIME-Version: 1.0 X-FEAS-AUTH-USER: dzm91@hust.edu.cn Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org The ray_config uses ray_release as its unified error handling function. However, it does not know if local->sram/rmem/amem succeeds or not. Fix this by adding sanity check on local->sram/rmem/amem in the ray_relase. Signed-off-by: Dongliang Mu --- drivers/net/wireless/ray_cs.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/drivers/net/wireless/ray_cs.c b/drivers/net/wireless/ray_cs.c index 785a5be72b2b..47d9c71b63b5 100644 --- a/drivers/net/wireless/ray_cs.c +++ b/drivers/net/wireless/ray_cs.c @@ -733,9 +733,12 @@ static void ray_release(struct pcmcia_device *link) del_timer_sync(&local->timer); - iounmap(local->sram); - iounmap(local->rmem); - iounmap(local->amem); + if (local->sram) + iounmap(local->sram); + if (local->rmem) + iounmap(local->rmem); + if (local->amem) + iounmap(local->amem); pcmcia_disable_device(link); dev_dbg(&link->dev, "ray_release ending\n");