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 X-Spam-Level: X-Spam-Status: No, score=-1.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS 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 E1D54C433FF for ; Tue, 13 Aug 2019 14:25:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id A531520679 for ; Tue, 13 Aug 2019 14:25:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1565706320; bh=gcMUlSU6QFsIHZ1cUMxsp93sjGe+D+WWwUj+U+TwBWM=; h=Date:From:To:Cc:Subject:In-Reply-To:References:List-ID:From; b=0eQQzcK/1ioD407J9xU+uh9j6DnlNDk+lxKad2JKjTTwu3+f6ImPuh/u9sLZFS/GN GgbzRUfcLfHKEpcm/60ThRL3CUFH7pcqw2Eii2DG121pHVlkhHk8bTFKBZfY5whnHC naitxfJBFG0LzT8v/eLEfnTme7t3gpax+UKRCYO8= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728184AbfHMOZT (ORCPT ); Tue, 13 Aug 2019 10:25:19 -0400 Received: from foss.arm.com ([217.140.110.172]:37918 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728026AbfHMOZT (ORCPT ); Tue, 13 Aug 2019 10:25:19 -0400 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 6B6F4344; Tue, 13 Aug 2019 07:25:18 -0700 (PDT) Received: from big-swifty.misterjones.org (unknown [172.31.20.19]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id C0EBD3F706; Tue, 13 Aug 2019 07:25:14 -0700 (PDT) Date: Tue, 13 Aug 2019 15:25:06 +0100 Message-ID: <86blwtnnwd.wl-maz@kernel.org> From: Marc Zyngier To: Dmitry Osipenko Cc: Thierry Reding , Jonathan Hunter , Peter De Schrijver , Thomas Gleixner , Jason Cooper , linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v1 1/2] irqchip/tegra: Remove everything related to COP In-Reply-To: <20190811183044.13925-1-digetx@gmail.com> References: <20190811183044.13925-1-digetx@gmail.com> User-Agent: Wanderlust/2.15.9 (Almost Unreal) SEMI-EPG/1.14.7 (Harue) FLIM/1.14.9 (=?UTF-8?B?R29qxY0=?=) APEL/10.8 EasyPG/1.0.0 Emacs/26 (aarch64-unknown-linux-gnu) MULE/6.0 (HANACHIRUSATO) Organization: Approximate MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 11 Aug 2019 19:30:43 +0100, Dmitry Osipenko wrote: > > There is no point in touching of the COP (ARM7TDMI auxiliary boot/firmware > CPU) because COP's interrupts should be related only to an old multimedia > firmware that is not applicable to the upstream kernel. Hence let's remove > everything related to the COP, for consistency. We've had that exact discussion a few weeks ago, and I objected to this change as there is no possible way you can know for sure people don't use mainline with an old firmware. The whole point of the firmware is to be an abstraction for the kernel, for better or worse. If you really want to do something useful here, consider detecting such firmware (even better, detect the new ones that don't require this stuff) and document the various requirements. At least we'll know where we stand, because the changes you're making are just as random as what we have so far. Thanks, M. -- Jazz is not dead, it just smells funny.