From patchwork Tue Sep 29 20:25:14 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 259090 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=-6.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no 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 F07EFC5516F for ; Tue, 29 Sep 2020 20:41:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A355F206B5 for ; Tue, 29 Sep 2020 20:41:02 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="DGmRniuw"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="STkATloI" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729568AbgI2Ukn (ORCPT ); Tue, 29 Sep 2020 16:40:43 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:48690 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729296AbgI2Ufq (ORCPT ); Tue, 29 Sep 2020 16:35:46 -0400 Message-Id: <20200929203459.967800092@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1601411744; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=yPLMFV0AoKzVfjkZGD1cBol7ZHiDqQNGHcgytaaR7SU=; b=DGmRniuwLHzIUi4k/mQQVGbmHmlc5hKx7KI3F+Vt92K4HbV+4/N++j7KAiLrK0Aig5EI27 OK4nc7WDsMiyTI4/TtPmO0qJWpgf23aOyvOwL6BP3SpKXbLdpDBkbXGes6GmQDAtisSw4+ NR9MnI2PyeekW2W3WlcAcAqbaORHvTZ0ER5Zet/4TFYBCqr+vGzjXZ5fWdft3D9FxNtAR7 n3LgKckRM18g7rRH5sLOSYPXk62LNNdGaL9Sze7y155ktki/zLKhk0pjW7usA8ejPxRQyh HKGpF2HD9KC7ZuQD0Oc5/IsUAXjLcIZSHxXBZ9Bb8ciVF2E9DukQYKImu4ZOyg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1601411744; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=yPLMFV0AoKzVfjkZGD1cBol7ZHiDqQNGHcgytaaR7SU=; b=STkATloI5Xd/LYwyRA1wjacSEWk8sYNo/Fk8PiYrZnl0nulJcadbqh65bbryKovkMRPRbM i9eLFjLBfU9eplDQ== Date: Tue, 29 Sep 2020 22:25:14 +0200 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Paul McKenney , Matthew Wilcox , Christian Benvenuti , Govindarajulu Varadarajan <_govind@gmx.com>, Dave Miller , Jakub Kicinski , netdev@vger.kernel.org, Jonathan Corbet , Mauro Carvalho Chehab , linux-doc@vger.kernel.org, Sebastian Andrzej Siewior , Luc Van Oostenryck , Jay Cliburn , Chris Snook , Vishal Kulkarni , Jeff Kirsher , intel-wired-lan@lists.osuosl.org, Shannon Nelson , Pensando Drivers , Andrew Lunn , Heiner Kallweit , Russell King , Thomas Bogendoerfer , Solarflare linux maintainers , Edward Cree , Martin Habets , Jon Mason , Daniel Drake , Ulrich Kunitz , Kalle Valo , linux-wireless@vger.kernel.org, linux-usb@vger.kernel.org, Greg Kroah-Hartman , Arend van Spriel , Franky Lin , Hante Meuleman , Chi-Hsien Lin , Wright Feng , brcm80211-dev-list.pdl@broadcom.com, brcm80211-dev-list@cypress.com, Stanislav Yakovlev , Stanislaw Gruszka , Johannes Berg , Emmanuel Grumbach , Luca Coelho , Intel Linux Wireless , Jouni Malinen , Amitkumar Karwar , Ganapathi Bhat , Xinming Hu , libertas-dev@lists.infradead.org, Pascal Terjan , Ping-Ke Shih Subject: [patch V2 05/36] net: atheros: Remove WARN_ON(in_interrupt()) References: <20200929202509.673358734@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Thomas Gleixner in_interrupt() is ill defined and does not provide what the name suggests. The usage especially in driver code is deprecated and a tree wide effort to clean up and consolidate the (ab)usage of in_interrupt() and related checks is happening. In this case the check covers only parts of the contexts in which these functions cannot be called. It fails to detect preemption or interrupt disabled invocations. As the functions which are invoked from at*_reinit_locked() contain a broad variety of checks (always enabled or debug option dependent) which cover all invalid conditions already, there is no point in having inconsistent warnings in those drivers. Just remove them. Signed-off-by: Thomas Gleixner --- drivers/net/ethernet/atheros/atl1c/atl1c_main.c | 1 - drivers/net/ethernet/atheros/atl1e/atl1e_main.c | 2 -- drivers/net/ethernet/atheros/atlx/atl2.c | 1 - 3 files changed, 4 deletions(-) --- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c +++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c @@ -220,7 +220,6 @@ static void atl1c_phy_config(struct time void atl1c_reinit_locked(struct atl1c_adapter *adapter) { - WARN_ON(in_interrupt()); atl1c_down(adapter); atl1c_up(adapter); clear_bit(__AT_RESETTING, &adapter->flags); --- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c +++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c @@ -127,8 +127,6 @@ static void atl1e_phy_config(struct time void atl1e_reinit_locked(struct atl1e_adapter *adapter) { - - WARN_ON(in_interrupt()); while (test_and_set_bit(__AT_RESETTING, &adapter->flags)) msleep(1); atl1e_down(adapter); --- a/drivers/net/ethernet/atheros/atlx/atl2.c +++ b/drivers/net/ethernet/atheros/atlx/atl2.c @@ -1086,7 +1086,6 @@ static int atl2_up(struct atl2_adapter * static void atl2_reinit_locked(struct atl2_adapter *adapter) { - WARN_ON(in_interrupt()); while (test_and_set_bit(__ATL2_RESETTING, &adapter->flags)) msleep(1); atl2_down(adapter);