From patchwork Tue Sep 29 20:25:19 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 259105 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 6D63EC47431 for ; Tue, 29 Sep 2020 20:36:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 12A0821707 for ; Tue, 29 Sep 2020 20:36:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="pLhqEL6Z"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="BTy/4a8H" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729413AbgI2Uf5 (ORCPT ); Tue, 29 Sep 2020 16:35:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37222 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729166AbgI2Ufz (ORCPT ); Tue, 29 Sep 2020 16:35:55 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8EA2CC0613D6; Tue, 29 Sep 2020 13:35:52 -0700 (PDT) Message-Id: <20200929203500.481750554@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1601411750; 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=VICDOx2EIISDwW+YF3QvD5vk142qLSDR+atrWMc+BeY=; b=pLhqEL6ZGWSBgJ9nzOjc+QUMoPVWpE4jz349MJWEFKO5TI348m5PQgXEUEoRJaUXnvFLAO Npm+2XlTIkv74YUj7zNV4u3Sc6cTkrdvLjUoxP2HL6M+cfwsbuwusfS/1zRw16DETrQ9MY o1WplOBvkiBCZTbs0NtfUjdRB7LfRyDt8OTmfHQgltGY9H0XG8JYxQxmG2jlRaxsD71vnh vi+3+E067kHa7BSdTsAe5CSthJW6Qb0/ACt9F9YKnWCgIQ5Rg1Qw+MBBSs9Zaqq9dfwcC8 XgIGjeEQzb35lFbyQCXkP2jYh3mzF6jSSPUJJsM4l60uyICjlXCZ/SjqGLmoZg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1601411751; 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=VICDOx2EIISDwW+YF3QvD5vk142qLSDR+atrWMc+BeY=; b=BTy/4a8HncmpoDwnXDEurZSKOP5mWdJwALMMKLG/chU7a6Y2N0g2DffQlMJcSEODI7DDYP CD/HFFakt7GQE8AQ== Date: Tue, 29 Sep 2020 22:25:19 +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 , Alexander Duyck Subject: [patch V2 10/36] net: intel: Remove in_interrupt() warnings 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: 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 Reviewed-by: Alexander Duyck --- 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);