From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Tue, 14 Jul 2015 12:47:59 +0200 (CEST) Received: from down.free-electrons.com ([37.187.137.238]:51493 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by eddie.linux-mips.org with ESMTP id S27009345AbbGNKr4rfg0n (ORCPT ); Tue, 14 Jul 2015 12:47:56 +0200 Received: by mail.free-electrons.com (Postfix, from userid 106) id C8FB45BE; Tue, 14 Jul 2015 12:47:58 +0200 (CEST) Received: from bbrezillon (col31-4-88-188-80-5.fbx.proxad.net [88.188.80.5]) by mail.free-electrons.com (Postfix) with ESMTPSA id A999016D; Tue, 14 Jul 2015 12:47:57 +0200 (CEST) Date: Tue, 14 Jul 2015 12:47:48 +0200 From: Boris Brezillon To: Stephen Boyd Cc: Mike Turquette , linux-clk@vger.kernel.org, Jonathan Corbet , Tony Lindgren , Ralf Baechle , Emilio =?UTF-8?B?TMOzcGV6?= , Maxime Ripard , Tero Kristo , Peter De Schrijver , Prashant Gaikwad , Stephen Warren , Thierry Reding , Alexandre Courbot , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-omap@vger.kernel.org, linux-mips@linux-mips.org, linux-tegra@vger.kernel.org Subject: Re: [PATCH v5] clk: change clk_ops' ->determine_rate() prototype Message-ID: <20150714124748.55dd6213@bbrezillon> In-Reply-To: <20150713230217.GI30412@codeaurora.org> References: <1436294888-25752-1-git-send-email-boris.brezillon@free-electrons.com> <20150708005748.GG30412@codeaurora.org> <20150708110005.704c49ff@bbrezillon> <559D66EE.4060707@codeaurora.org> <20150709223938.19450e75@bbrezillon> <20150713230217.GI30412@codeaurora.org> X-Mailer: Claws Mail 3.9.3 (GTK+ 2.24.23; x86_64-pc-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 48267 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: boris.brezillon@free-electrons.com Precedence: bulk List-help: List-unsubscribe: List-software: Ecartis version 1.0.0 List-Id: linux-mips X-List-ID: linux-mips List-subscribe: List-owner: List-post: List-archive: X-list: linux-mips On Mon, 13 Jul 2015 16:02:18 -0700 Stephen Boyd wrote: > On 07/09, Boris Brezillon wrote: > > Hi Stephen, > > > > On Wed, 08 Jul 2015 11:07:42 -0700 > > Stephen Boyd wrote: > > > > > On 07/08/2015 02:00 AM, Boris Brezillon wrote: > > > > Hi Stephen, > > > > > > > > On Tue, 7 Jul 2015 17:57:48 -0700 > > > > Stephen Boyd wrote: > > > > > > > >> On 07/07, Boris Brezillon wrote: > > > >>> > > > >>> } else { > > > >>> pr_err("clk: clk_composite_determine_rate function called, but no mux or rate callback set!\n"); > > > >>> + req->rate = 0; > > > >>> return 0; > > > >> Shouldn't this return an error now? And then assigning req->rate > > > >> wouldn't be necessary. Sorry I must have missed this last round. > > > >> > > > > Actually I wanted to keep the existing behavior: return a 0 rate (not > > > > an error) when there is no mux or rate ops. > > > > > > > > That's something we can change afterwards, but it might reveals > > > > new bugs if some users are checking for a 0 rate to detect errors. > > > > > > > > > > Ok. Care to send the patch now to do that while we're thinking about it? > > > We can test it out for a month or two. > > > > > > > Here is a patch modifying a few drivers to return errors instead of a 0 > > rate. Feel free to squash it in the previous one if you think this is > > better. > > > > Best Regards, > > > > Boris > > > > --- >8 --- > > > > From dca9c28301042cf19dad4b1e4555cdb7c1063745 Mon Sep 17 00:00:00 2001 > > From: Boris Brezillon > > Date: Thu, 9 Jul 2015 12:20:21 +0200 > > Subject: [PATCH] clk: fix some determine_rate implementations > > > > Some determine_rate implementations are not returning an error when then > > failed to adapt the rate according to the rate request. > > Fix them so that they return an error instead of silently returning 0. > > > > Signed-off-by: Boris Brezillon > > The linewrap is seriously messed up here. Please fix your mailer > next time. I had to hand edit the patch to get it to apply. I've > applied this in top of the original patch as a different commit, > in case we need to revert it later. Sorry about that, I forgot to remove the line wrapper when copying the content of the patch into my mailer :-/. -- Boris Brezillon, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com