From patchwork Tue Sep 29 20:25:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 289362 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 EF681C52D55 for ; Tue, 29 Sep 2020 20:38:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id A432C2074B for ; Tue, 29 Sep 2020 20:38:13 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="h2OUx/Xl"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="Lwhz4b57" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729543AbgI2UgW (ORCPT ); Tue, 29 Sep 2020 16:36:22 -0400 Received: from Galois.linutronix.de ([193.142.43.55]:49174 "EHLO galois.linutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728657AbgI2Ufz (ORCPT ); Tue, 29 Sep 2020 16:35:55 -0400 Message-Id: <20200929203500.675706419@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1601411753; 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=DMPTCCaBsiS/4xahmtxtf/uVQ4ddpwEhLX/qD7/JBWU=; b=h2OUx/XlVZ4Z35Rj+pvIpshipqwoK40wQ89KyKxeF4ya9XeIMB0j3rZxunF237sg+8h2DN qS+BG1tGqWtCl6QG9X7XRXQ8jpIaW9pbBaZ9shAjht11QpoQIrf5gttLChLh2bUqxuXtQo hHiXrbqGbBcwFUGmMsSYU02ZU9+XBapeWcnKbCK5WgboaUgJfx2MI5ebOsIpxuciTGBstJ 9xtdxiBP2ZCdZ4tD9sEenQJwri+Ygee6K7c57EcR9DuEr541RqodDbiXbPjdvbn8L9/bR/ fZE6ArqG6pG/rl8E8Uz5qlR0AO96g7/2FV0n+fVHzkz60ORAns644ebeA7SKyQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1601411753; 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=DMPTCCaBsiS/4xahmtxtf/uVQ4ddpwEhLX/qD7/JBWU=; b=Lwhz4b57yzj5XJOSuBaw/4kkL6sUSqxL5Ln27+2v/4Oj6s51o7T50veSK1FO3iJrapr/yw qTKgCLmwqmbZweAg== Date: Tue, 29 Sep 2020 22:25:21 +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 12/36] net: ionic: 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: netdev@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 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 ionic_adminq_post() and ionic_dev_cmd_wait() 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: Sebastian Andrzej Siewior Signed-off-by: Thomas Gleixner Acked-by: Shannon Nelson --- drivers/net/ethernet/pensando/ionic/ionic_main.c | 4 ---- 1 file changed, 4 deletions(-) --- a/drivers/net/ethernet/pensando/ionic/ionic_main.c +++ b/drivers/net/ethernet/pensando/ionic/ionic_main.c @@ -255,8 +255,6 @@ static int ionic_adminq_post(struct ioni struct ionic_queue *q; int err = 0; - WARN_ON(in_interrupt()); - if (!lif->adminqcq) return -EIO; @@ -328,8 +326,6 @@ int ionic_dev_cmd_wait(struct ionic *ion int done; int err; - WARN_ON(in_interrupt()); - /* Wait for dev cmd to complete, retrying if we get EAGAIN, * but don't wait any longer than max_seconds. */