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 57BC5C7EE22 for ; Thu, 11 May 2023 12:49:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237788AbjEKMtc (ORCPT ); Thu, 11 May 2023 08:49:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44498 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237779AbjEKMta (ORCPT ); Thu, 11 May 2023 08:49:30 -0400 Received: from wnew1-smtp.messagingengine.com (wnew1-smtp.messagingengine.com [64.147.123.26]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4519C6E86; Thu, 11 May 2023 05:49:25 -0700 (PDT) Received: from compute6.internal (compute6.nyi.internal [10.202.2.47]) by mailnew.west.internal (Postfix) with ESMTP id A028D2B069A3; Thu, 11 May 2023 08:49:20 -0400 (EDT) Received: from imap51 ([10.202.2.101]) by compute6.internal (MEProxy); Thu, 11 May 2023 08:49:22 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=arndb.de; h=cc :cc:content-transfer-encoding:content-type:content-type:date :date:from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:sender:subject:subject:to:to; s=fm3; t= 1683809360; x=1683816560; bh=d2I3MJoGb9Q0k1pggTIspxukMh9F288HwWB EZkJydBM=; b=EaT8QDsGJiHFxT+LJIqn2fEflreLZWqKGpVDwbrPLYvL1wt4nLg Wa1WNW+6odEbrT8vWG4Kqkt+XnHCbupWK6S+GXNiSev5T5S8qdVptnwvrdvaaypO DxjOXrlGw3MTnH2SHlm0saVDo2Vd/MH+coOuqnxVibh+pIY7tCYKM91yc2+lwfAY 8Uc2AImEQiSqaPkFH2OZMZZ6uXWu/+4L6TrxtkbPQuvAgmwNbIpat8dyWeE65WLr FepOVjK9s4dKMRV4F5hYmRYR+t6pmOJCCfLHN3yAKTmYYofcqSRReJX/58keVUGZ /qacxa7dNgui0WGS51SJYWw3o+gkd4E/o3A== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding :content-type:content-type:date:date:feedback-id:feedback-id :from:from:in-reply-to:in-reply-to:message-id:mime-version :references:reply-to:sender:subject:subject:to:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm3; t= 1683809360; x=1683816560; bh=d2I3MJoGb9Q0k1pggTIspxukMh9F288HwWB EZkJydBM=; b=jB9XvrdWPUTvwh1iDY/3NDQnzSrog8ELb1h9L6ikkVOhDtmVDz3 UXAE5Lfnsb1qGvgzMXsuGMtW7DAOXrZUF0n3em0sgcghRqYnzwQRhIBzcvAHtYIC dz7ZcosF3AQPao+lh5E5QQNhIUKMyozAL6w1I/BEh06mRkVMXxyIKxgQjVFOBQJs +qn35bkU+cxGHXhW0HPtsju+GE+7hIaFH7AtuAcdjCwDuIBXfwJgaXumToGqAG9v sbHIo24d/eBn7IIu6FJKuWDyuFr9H2c8qDhKBrLkmoqiDvXdpn6+vGeMFizRdU44 I9XCsw3OdQRl8ibPdLeZecXx1RH0d+WvXTQ== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvhedrfeegkedgheeiucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepofgfggfkjghffffhvfevufgtgfesthhqredtreerjeenucfhrhhomhepfdet rhhnugcuuegvrhhgmhgrnhhnfdcuoegrrhhnugesrghrnhgusgdruggvqeenucggtffrrg htthgvrhhnpeegfeejhedvledvffeijeeijeeivddvhfeliedvleevheejleetgedukedt gfejveenucevlhhushhtvghrufhiiigvpedtnecurfgrrhgrmhepmhgrihhlfhhrohhmpe grrhhnugesrghrnhgusgdruggv X-ME-Proxy: Feedback-ID: i56a14606:Fastmail Received: by mailuser.nyi.internal (Postfix, from userid 501) id A9369B60086; Thu, 11 May 2023 08:49:18 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.9.0-alpha0-415-gf2b17fe6c3-fm-20230503.001-gf2b17fe6 Mime-Version: 1.0 Message-Id: <4976d32d-b73f-49e5-9e15-78786d77dc8f@app.fastmail.com> In-Reply-To: References: <20230510110557.14343-6-tzimmermann@suse.de> <202305102136.eMjTSPwH-lkp@intel.com> <49684d58-c19d-b147-5e9f-2ac526dd50f0@suse.de> <743d2b1e-c843-4fb2-b252-0006be2e2bd8@app.fastmail.com> Date: Thu, 11 May 2023 14:48:58 +0200 From: "Arnd Bergmann" To: "Geert Uytterhoeven" Cc: "Thomas Zimmermann" , "kernel test robot" , "Helge Deller" , "Javier Martinez Canillas" , "Daniel Vetter" , "Vineet Gupta" , "Huacai Chen" , "WANG Xuerui" , "David S . Miller" , "James E . J . Bottomley" , "Sam Ravnborg" , suijingfeng@loongson.cn, oe-kbuild-all@lists.linux.dev, Linux-Arch , linux-fbdev@vger.kernel.org, linux-ia64@vger.kernel.org, linux-parisc@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-m68k@lists.linux-m68k.org, loongarch@lists.linux.dev, sparclinux@vger.kernel.org, linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, "Artur Rojek" Subject: Re: [PATCH v6 5/6] fbdev: Move framebuffer I/O helpers into Content-Type: text/plain;charset=utf-8 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-arch@vger.kernel.org On Thu, May 11, 2023, at 14:35, Geert Uytterhoeven wrote: > CC Artur, who's working on HP Jornada 680. > > On Wed, May 10, 2023 at 5:55=E2=80=AFPM Arnd Bergmann = wrote: >> On Wed, May 10, 2023, at 16:27, Thomas Zimmermann wrote: >> > Am 10.05.23 um 16:15 schrieb Arnd Bergmann: >> >> On Wed, May 10, 2023, at 16:03, kernel test robot wrote: > > See also commit 4aafae27d0ce73f8 ("sh: hd64461 tidying."), which > claims they are no longer needed. > > Don't the I/O port macros just treat the port as an absolute base addr= ess > when sh_io_port_base isn't set? As far as I can tell, sh_io_port_base gets initialized to '-1' specifically to prevent that from working by accident. So it's almost treated as an absolute base address, but the off-by-one offset ensures this never actually works unless it was first set to the correct value. Arnd