From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E3B0BC433FE for ; Thu, 24 Nov 2022 12:50:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229475AbiKXMug (ORCPT ); Thu, 24 Nov 2022 07:50:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35244 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229506AbiKXMuf (ORCPT ); Thu, 24 Nov 2022 07:50:35 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 76B158E2BC; Thu, 24 Nov 2022 04:50:34 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 076CA6204E; Thu, 24 Nov 2022 12:50:34 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 59DB3C433D6; Thu, 24 Nov 2022 12:50:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1669294233; bh=owQPJcgBJ5OE4TDSQWZ6ga1q1Y8+GA4UPgz3kR3CBZs=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=r8p6qHo11zmmmbirwEPcToktZTwKXgo62jlbvLF0KF7rZ6PTHYdnDmdyjpQ9jhmpw v7UhUUeJwtpqN+F9/mrhQ1iatWS9LrknsnRXQcqetisi2bE+SDOJj6B9I0BXuhvEHN XiSJaKW9F/uJFfjqW/LsGP6HlVgFctpGhXz+XWOZcYNJgY+2z7K6Mn6NMe20qmMg8s ekWG/nqZsWlBMPYt+h89KWeBRxotyXt655870ZDqrvqYu76C+yRCIF0v8M0RMRBWgq LhWBCWPbZEjpf3nEsc9iknImf5g2N4xYvQDkhbng2uQJ4x4+VcOwOnUt6UxY2GDjjx nS/3Ik87sf8ng== Received: from sofa.misterjones.org ([185.219.108.64] helo=goblin-girl.misterjones.org) by disco-boy.misterjones.org with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1oyBgU-008NK8-Tq; Thu, 24 Nov 2022 12:50:31 +0000 Date: Thu, 24 Nov 2022 12:50:30 +0000 Message-ID: <868rk0o6sp.wl-maz@kernel.org> From: Marc Zyngier To: Thomas Gleixner Cc: LKML , Will Deacon , linux-pci@vger.kernel.org, Bjorn Helgaas , Lorenzo Pieralisi , Greg Kroah-Hartman , Jason Gunthorpe , Andrew Lunn , Gregory Clement , Sebastian Hesselbarth , Ammar Faizi , Robin Murphy , Lorenzo Pieralisi , Nishanth Menon , Tero Kristo , Santosh Shilimkar , linux-arm-kernel@lists.infradead.org, Vinod Koul , Sinan Kaya , Andy Gross , Bjorn Andersson , Mark Rutland , Shameerali Kolothum Thodi , Zenghui Yu , Shawn Guo , Sascha Hauer , Fabio Estevam Subject: Re: [patch V2 01/40] irqchip/irq-mvebu-icu: Fix works by chance pointer assignment In-Reply-To: <20221121140048.344525618@linutronix.de> References: <20221121135653.208611233@linutronix.de> <20221121140048.344525618@linutronix.de> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM-LB/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL-LB/10.8 EasyPG/1.0.0 Emacs/27.1 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-SA-Exim-Connect-IP: 185.219.108.64 X-SA-Exim-Rcpt-To: tglx@linutronix.de, linux-kernel@vger.kernel.org, will@kernel.org, linux-pci@vger.kernel.org, bhelgaas@google.com, lorenzo.pieralisi@arm.com, gregkh@linuxfoundation.org, jgg@mellanox.com, andrew@lunn.ch, gregory.clement@bootlin.com, sebastian.hesselbarth@gmail.com, ammarfaizi2@gnuweeb.org, robin.murphy@arm.com, lpieralisi@kernel.org, nm@ti.com, kristo@kernel.org, ssantosh@kernel.org, linux-arm-kernel@lists.infradead.org, vkoul@kernel.org, okaya@kernel.org, agross@kernel.org, andersson@kernel.org, mark.rutland@arm.com, shameerali.kolothum.thodi@huawei.com, yuzenghui@huawei.com, shawnguo@kernel.org, s.hauer@pengutronix.de, festevam@gmail.com X-SA-Exim-Mail-From: maz@kernel.org X-SA-Exim-Scanned: No (on disco-boy.misterjones.org); SAEximRunCond expanded to false Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org On Mon, 21 Nov 2022 14:39:29 +0000, Thomas Gleixner wrote: > > Assigning a void pointer which points to a struct to two different data > types only works by chance if the second type is the first member of the > struct. > > Replace this works by chance code by using the primary struct pointer. > > Signed-off-by: Thomas Gleixner > Cc: Andrew Lunn > Cc: Gregory Clement > Cc: Sebastian Hesselbarth Acked-by: Marc Zyngier M. -- Without deviation from the norm, progress is not possible.