From patchwork Wed Mar 1 10:09:14 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Greenman, Gregory" X-Patchwork-Id: 13155777 X-Patchwork-Delegate: johannes@sipsolutions.net 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 9B883C64ED6 for ; Wed, 1 Mar 2023 10:10:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229470AbjCAKK1 (ORCPT ); Wed, 1 Mar 2023 05:10:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59578 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229942AbjCAKKL (ORCPT ); Wed, 1 Mar 2023 05:10:11 -0500 Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id AAA9334F67 for ; Wed, 1 Mar 2023 02:10:10 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1677665410; x=1709201410; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=AubojJ5ErUthQoQCDUqPhRMSqIc2vIwQGz4rpStf/YY=; b=Ky3ushR1TRmd41gXg5kB0/jkUmDXl3V2XILQTbLawvihLORQaUwfLW9t IOtI1OTX9IU+Y7W+cIloBOAmIFml0+/cGJUzeCeJx9kizS7W5HXHFk4Ig UEa/Nq5kEl675zhArVsSG00O6l4f2TfJoTbVAjCvhRfvoXEdBElc4S0jb d99c3dDf14oFl0shV4R9GPnPdILKWXQG/4ldw+nsaWm0OqlnxbkQj0DBJ pbER8PV2v1/uOcryRSVNOEOd4c9eAa6osv1AeXb14CPF7Z/1J/oMSamOm ry37hizVRbw1Lo7LZlbV661kklAbcZBGO7Z2c9RRxwSdwfxu9vSVfKhVp g==; X-IronPort-AV: E=McAfee;i="6500,9779,10635"; a="336662769" X-IronPort-AV: E=Sophos;i="5.98,224,1673942400"; d="scan'208";a="336662769" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Mar 2023 02:10:00 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10635"; a="738589003" X-IronPort-AV: E=Sophos;i="5.98,224,1673942400"; d="scan'208";a="738589003" Received: from omimran-mobl.ger.corp.intel.com (HELO ggreenma-mobl2.intel.com) ([10.249.94.171]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Mar 2023 02:09:58 -0800 From: gregory.greenman@intel.com To: johannes@sipsolutions.net Cc: linux-wireless@vger.kernel.org, Johannes Berg , Gregory Greenman Subject: [PATCH v2 02/23] wifi: mac80211: adjust scan cancel comment/check Date: Wed, 1 Mar 2023 12:09:14 +0200 Message-Id: <20230301115906.84352e46f342.Id90fef8c581cebe19cb30274340cf43885d55c74@changeid> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20230301100935.170922-1-gregory.greenman@intel.com> References: <20230301100935.170922-1-gregory.greenman@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Johannes Berg Instead of the comment about holding RTNL, which is now wrong, add a proper lockdep assertion for the wiphy mutex. Fixes: a05829a7222e ("cfg80211: avoid holding the RTNL when calling the driver") Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman --- net/mac80211/scan.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c index dc3cdee51e66..32fa8aca7005 100644 --- a/net/mac80211/scan.c +++ b/net/mac80211/scan.c @@ -9,7 +9,7 @@ * Copyright 2007, Michael Wu * Copyright 2013-2015 Intel Mobile Communications GmbH * Copyright 2016-2017 Intel Deutschland GmbH - * Copyright (C) 2018-2021 Intel Corporation + * Copyright (C) 2018-2022 Intel Corporation */ #include @@ -1246,11 +1246,11 @@ int ieee80211_request_ibss_scan(struct ieee80211_sub_if_data *sdata, return ret; } -/* - * Only call this function when a scan can't be queued -- under RTNL. - */ void ieee80211_scan_cancel(struct ieee80211_local *local) { + /* ensure a new scan cannot be queued */ + lockdep_assert_wiphy(local->hw.wiphy); + /* * We are canceling software scan, or deferred scan that was not * yet really started (see __ieee80211_start_scan ).