From patchwork Sun Sep 27 19:48:56 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 259137 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=-7.0 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 6B25FC47420 for ; Sun, 27 Sep 2020 19:58:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3852C23A53 for ; Sun, 27 Sep 2020 19:58:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="qDV71a+1"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="VP4vqOvB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727171AbgI0T6C (ORCPT ); Sun, 27 Sep 2020 15:58:02 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:40792 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726931AbgI0T5U (ORCPT ); Sun, 27 Sep 2020 15:57:20 -0400 Message-Id: <20200927194920.824108021@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1601236638; 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=83qDvGuLXzUs/9fusW5YkDt4paS3sBnoEIk7Nou3kd0=; b=qDV71a+1GCvWhc9lufX4zEQV7QRn9/bZHT8FQITekgxUS3UAIr0pogPAdA1ExY69S+jY/y fkbAjNZifsS1uaBZ56OIZlb/i3fbugRM4FDd4AfJ2FXShvtx00KA5Db9UVXjW6mUGqUgfg rinNQlXj5sEvgqNILV8BDzifz0AdiMlUsSB1znzPo1Q6Pmi+re17ux1P+Oi4e3ZiLtwaIg Bsr9UzJiR/me2V1yYQ6eX720Q8Itoag1PNITz/wjwjbcca850NRUnYK12EbcnOuGtOvg5Z 7iEEqlEw6MUfb6qe7q0AmBk4MYMjT4fHF9lFdtOJUh92ScVj2MbYTXe8t+QmQg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1601236638; 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=83qDvGuLXzUs/9fusW5YkDt4paS3sBnoEIk7Nou3kd0=; b=VP4vqOvBpurOsdqBLfFebJsD1S6lOmeXln+fiJ3timSPl/o5O/7c6kKdrszLlbgNceW6o4 F9IPNZN2VRbcQUDg== Date: Sun, 27 Sep 2020 21:48:56 +0200 From: Thomas Gleixner To: LKML Cc: Peter Zijlstra , Linus Torvalds , Paul McKenney , Matthew Wilcox , Sebastian Andrzej Siewior , Jeff Kirsher , "David S. Miller" , Jakub Kicinski , netdev@vger.kernel.org, Christian Benvenuti , Govindarajulu Varadarajan <_govind@gmx.com>, Dave Miller , Jonathan Corbet , Mauro Carvalho Chehab , linux-doc@vger.kernel.org, Luc Van Oostenryck , Jay Cliburn , Chris Snook , Vishal Kulkarni , 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 10/35] net: intel: Remove in_interrupt() warnings References: <20200927194846.045411263@linutronix.de> MIME-Version: 1.0 Content-transfer-encoding: 8-bit Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Sebastian Andrzej Siewior 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 checks cover only parts of the contexts in which these functions cannot be called. They fail to detect preemption or interrupt disabled invocations. As the functions which are invoked from the various places contain already a broad variety of checks (always enabled or debug option dependent) cover all invalid conditions already, there is no point in having inconsistent warnings in those drivers. Just remove them. Signed-off-by: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Cc: Jeff Kirsher Cc: "David S. Miller" Cc: Jakub Kicinski Cc: netdev@vger.kernel.org --- drivers/net/ethernet/intel/e1000/e1000_main.c | 1 - drivers/net/ethernet/intel/fm10k/fm10k_pci.c | 2 -- drivers/net/ethernet/intel/i40e/i40e_main.c | 4 ---- drivers/net/ethernet/intel/ice/ice_main.c | 1 - drivers/net/ethernet/intel/igb/igb_main.c | 1 - drivers/net/ethernet/intel/igc/igc_main.c | 1 - drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 1 - drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 2 -- 8 files changed, 13 deletions(-) --- a/drivers/net/ethernet/intel/e1000/e1000_main.c +++ b/drivers/net/ethernet/intel/e1000/e1000_main.c @@ -534,7 +534,6 @@ void e1000_down(struct e1000_adapter *ad void e1000_reinit_locked(struct e1000_adapter *adapter) { - WARN_ON(in_interrupt()); while (test_and_set_bit(__E1000_RESETTING, &adapter->flags)) msleep(1); --- a/drivers/net/ethernet/intel/fm10k/fm10k_pci.c +++ b/drivers/net/ethernet/intel/fm10k/fm10k_pci.c @@ -221,8 +221,6 @@ static bool fm10k_prepare_for_reset(stru { struct net_device *netdev = interface->netdev; - WARN_ON(in_interrupt()); - /* put off any impending NetWatchDogTimeout */ netif_trans_update(netdev); --- a/drivers/net/ethernet/intel/i40e/i40e_main.c +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c @@ -6689,7 +6689,6 @@ static void i40e_vsi_reinit_locked(struc { struct i40e_pf *pf = vsi->back; - WARN_ON(in_interrupt()); while (test_and_set_bit(__I40E_CONFIG_BUSY, pf->state)) usleep_range(1000, 2000); i40e_down(vsi); @@ -8462,9 +8461,6 @@ void i40e_do_reset(struct i40e_pf *pf, u { u32 val; - WARN_ON(in_interrupt()); - - /* do the biggest reset indicated */ if (reset_flags & BIT_ULL(__I40E_GLOBAL_RESET_REQUESTED)) { --- a/drivers/net/ethernet/intel/ice/ice_main.c +++ b/drivers/net/ethernet/intel/ice/ice_main.c @@ -486,7 +486,6 @@ static void ice_do_reset(struct ice_pf * struct ice_hw *hw = &pf->hw; dev_dbg(dev, "reset_type 0x%x requested\n", reset_type); - WARN_ON(in_interrupt()); ice_prepare_for_reset(pf); --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2220,7 +2220,6 @@ void igb_down(struct igb_adapter *adapte void igb_reinit_locked(struct igb_adapter *adapter) { - WARN_ON(in_interrupt()); while (test_and_set_bit(__IGB_RESETTING, &adapter->state)) usleep_range(1000, 2000); igb_down(adapter); --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -3831,7 +3831,6 @@ void igc_down(struct igc_adapter *adapte void igc_reinit_locked(struct igc_adapter *adapter) { - WARN_ON(in_interrupt()); while (test_and_set_bit(__IGC_RESETTING, &adapter->state)) usleep_range(1000, 2000); igc_down(adapter); --- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c +++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c @@ -5677,7 +5677,6 @@ static void ixgbe_up_complete(struct ixg void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) { - WARN_ON(in_interrupt()); /* put off any impending NetWatchDogTimeout */ netif_trans_update(adapter->netdev); --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c @@ -2526,8 +2526,6 @@ void ixgbevf_down(struct ixgbevf_adapter void ixgbevf_reinit_locked(struct ixgbevf_adapter *adapter) { - WARN_ON(in_interrupt()); - while (test_and_set_bit(__IXGBEVF_RESETTING, &adapter->state)) msleep(1);