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=-5.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,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 C8A8FC433DB for ; Thu, 7 Jan 2021 20:05:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 940DD23443 for ; Thu, 7 Jan 2021 20:05:00 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727021AbhAGUE7 (ORCPT ); Thu, 7 Jan 2021 15:04:59 -0500 Received: from mail.kernel.org ([198.145.29.99]:51094 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725944AbhAGUE7 (ORCPT ); Thu, 7 Jan 2021 15:04:59 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 911B6233F6; Thu, 7 Jan 2021 20:04:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1610049859; bh=k6MeESPQHWsaUNptevG0GHmDrUuFq1OLKqaK3nKkK1Q=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=tsQhkf7O7aIZveSUDVWOWn9yNcOdvQ7H2H6ltc0N7bBZBe5oHaFQlkg1LwkSFgWZc jai74Fsb6x22q5tvTK9EdQQmXy8Oa2KrfAP+PHeWzQeEs3W3u5sbIH2M5noEJ2fu02 hMrzE4nNdTiOmNhNjZPpl9uEAUGJ4weYa5deC8HE= Date: Thu, 7 Jan 2021 21:05:38 +0100 From: Greg Kroah-Hartman To: Saravana Kannan Cc: "Rafael J. Wysocki" , kernel-team@android.com, linux-kernel@vger.kernel.org, Jisheng Zhang , Kevin Hilman , John Stultz , Nicolas Saenz Julienne , Marc Zyngier Subject: Re: [PATCH v1 0/5] Enable fw_devlink=on by default Message-ID: References: <20201218031703.3053753-1-saravanak@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201218031703.3053753-1-saravanak@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Dec 17, 2020 at 07:16:58PM -0800, Saravana Kannan wrote: > As discussed in LPC 2020, cyclic dependencies in firmware that couldn't > be broken using logic was one of the last remaining reasons > fw_devlink=on couldn't be set by default. > > This series changes fw_devlink so that when a cyclic dependency is found > in firmware, the links between those devices fallback to permissive mode > behavior. This way, the rest of the system still benefits from > fw_devlink, but the ambiguous cases fallback to permissive mode. > > Setting fw_devlink=on by default brings a bunch of benefits (currently, > only for systems with device tree firmware): > * Significantly cuts down deferred probes. > * Device probe is effectively attempted in graph order. > * Makes it much easier to load drivers as modules without having to > worry about functional dependencies between modules (depmod is still > needed for symbol dependencies). > > Greg/Rafael, > > Can we get this pulled into 5.11-rc1 or -rc2 soon please? I expect to > see some issues due to device drivers that aren't following best > practices (they don't expose the device to driver core). Want to > identify those early on and try to have them fixed before 5.11 release. > See [1] for an example of such a case. Now queued up in my tree, will show up in linux-next in a few days, let's see what breaks! :) And it is scheduled for 5.12-rc1, not 5.11, sorry. thanks, greg k-h