Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756001AbbHFUTg (ORCPT ); Thu, 6 Aug 2015 16:19:36 -0400 Received: from mail-wi0-f172.google.com ([209.85.212.172]:34758 "EHLO mail-wi0-f172.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751956AbbHFUTe (ORCPT ); Thu, 6 Aug 2015 16:19:34 -0400 MIME-Version: 1.0 In-Reply-To: <1438870315-18689-2-git-send-email-tomeu.vizoso@collabora.com> References: <1438870315-18689-1-git-send-email-tomeu.vizoso@collabora.com> <1438870315-18689-2-git-send-email-tomeu.vizoso@collabora.com> From: Rob Herring Date: Thu, 6 Aug 2015 15:19:12 -0500 Message-ID: Subject: Re: [PATCH v3 01/18] platform: delay OF device-driver matches until late_initcall To: Tomeu Vizoso Cc: "linux-kernel@vger.kernel.org" , Rob Herring , Stephen Warren , Javier Martinez Canillas , Mark Brown , Thierry Reding , "Rafael J. Wysocki" , "linux-arm-kernel@lists.infradead.org" , Dmitry Torokhov , "devicetree@vger.kernel.org" , Linus Walleij , "linux-acpi@vger.kernel.org" , Arnd Bergmann Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1178 Lines: 26 On Thu, Aug 6, 2015 at 9:11 AM, Tomeu Vizoso wrote: > Delay matches of platform devices with OF nodes until late_initcall, > when we are sure that all built-in drivers have been registered already. > This is needed to prevent deferred probes because of some drivers not > having registered yet. > > The reason why only platform devices are delayed is that some other > devices are expected to be probed earlier than late_initcall, for > example, the system PNP driver needs to probe its devices in > fs_initcall. > > Additionally, only platform devices with OF nodes are delayed because > some machines may depend on oter platform devices being registered at > specific times. How do we know that these probes occur before the unused clocks and regulators are turned off? Just getting lucky (as is deferred probe)? Can we do this one level earlier so we have a level left to do things after probe. Rob -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/