From patchwork Thu Nov 26 13:29:48 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sebastian Andrzej Siewior X-Patchwork-Id: 11933763 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=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=unavailable 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 8E230C63777 for ; Thu, 26 Nov 2020 13:30:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5859721D7E for ; Thu, 26 Nov 2020 13:30:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="ip+FKZTk"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="xhGeS/Ic" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2390123AbgKZNai (ORCPT ); Thu, 26 Nov 2020 08:30:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56782 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2390119AbgKZNai (ORCPT ); Thu, 26 Nov 2020 08:30:38 -0500 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CF7B5C0613D4 for ; Thu, 26 Nov 2020 05:30:37 -0800 (PST) From: Sebastian Andrzej Siewior DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1606397436; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=4DmSpUn3TvaIi0YjTfs82cRBGlzSa3RE3+yQ+8tMx+Q=; b=ip+FKZTkGX8NbmXLvAJYkFappUHQxrXaFJMpzAQeQsR2492Di6leYrwY8GeibG9sBC7ND0 rTQCa6NQ2ZcMA8FRAzL8xQH5cHfgrIfnWfj0sdyKbXrFZxmJU9Vs4+niNG+8NZj4nC5ULu 6FxdwKcmvDsMcr37LzYnmWAbDn+/XUaceQvWmcaIP8h8Vn6P7MnMhgjFqg7LzyYySq38uk IE4dCjbjEcqiTGVZiypa63skfGeILt06vJYD30MJx6SiwEapGBBNn0gQ2gcYMARD/cWLkF WAQNTKJJc0Wnm4HdZh7R1CnyKpceZyia8u28BtbyB0PmyMiyUSEVl5y2Xt8jXA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1606397436; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=4DmSpUn3TvaIi0YjTfs82cRBGlzSa3RE3+yQ+8tMx+Q=; b=xhGeS/Icf3b18Dtesq1lK9vvQDd665cpSUVQ3Hvb5YcbxW/EvIlQbP3mH64Y7CmeY0r69u 7ZtlIQtUKGYKHeCg== To: linux-scsi@vger.kernel.org Cc: Finn Thain , GR-QLogic-Storage-Upstream@marvell.com, Hannes Reinecke , Jack Wang , John Garry , linux-m68k@lists.linux-m68k.org, Manish Rangankar , Michael Schmitz , MPT-FusionLinux.pdl@broadcom.com, Nilesh Javali , Sathya Prakash , Sreekanth Reddy , Suganath Prabu Subramani , Vikram Auradkar , Xiang Chen , Xiaofei Tan , "James E . J . Bottomley" , "Martin K . Petersen" , Thomas Gleixner , "Ahmed S . Darwish" , Sebastian Andrzej Siewior Subject: [PATCH 10/14] scsi: myrb: Remove WARN_ON(in_interrupt()). Date: Thu, 26 Nov 2020 14:29:48 +0100 Message-Id: <20201126132952.2287996-11-bigeasy@linutronix.de> In-Reply-To: <20201126132952.2287996-1-bigeasy@linutronix.de> References: <20201126132952.2287996-1-bigeasy@linutronix.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org From: "Ahmed S. Darwish" The in_interrupt() macro 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 wait_for_completion() already contains a broad variety of checks (always enabled or debug option dependent) which cover all invalid conditions already, there is no point in having extra inconsistent warnings in drivers. Just remove it. Signed-off-by: Ahmed S. Darwish Signed-off-by: Sebastian Andrzej Siewior Cc: Hannes Reinecke Reviewed-by: Daniel Wagner --- drivers/scsi/myrb.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/scsi/myrb.c b/drivers/scsi/myrb.c index 5fa0f4ed6565f..3d8e91c07dc77 100644 --- a/drivers/scsi/myrb.c +++ b/drivers/scsi/myrb.c @@ -194,7 +194,6 @@ static unsigned short myrb_exec_cmd(struct myrb_hba *cb, cb->qcmd(cb, cmd_blk); spin_unlock_irqrestore(&cb->queue_lock, flags); - WARN_ON(in_interrupt()); wait_for_completion(&cmpl); return cmd_blk->status; }