From mboxrd@z Thu Jan 1 00:00:00 1970 From: Takashi Iwai Subject: Re: [PATCH v5 1/3] mfd: Add support for Cherry Trail Dollar Cove TI PMIC Date: Tue, 05 Sep 2017 11:38:51 +0200 Message-ID: References: <20170904144340.27693-1-tiwai@suse.de> <20170904144340.27693-2-tiwai@suse.de> <20170905072451.ephscqjqgwpnl6da@dell> <20170905081049.r3gbdtr2iuom6uk6@dell> <20170905085341.ssukn2rtyf3q65bn@dell> Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Content-Type: text/plain; charset=US-ASCII Return-path: Received: from mx2.suse.de ([195.135.220.15]:54285 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1750911AbdIEJix (ORCPT ); Tue, 5 Sep 2017 05:38:53 -0400 In-Reply-To: <20170905085341.ssukn2rtyf3q65bn@dell> Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: Lee Jones Cc: Darren Hart , Andy Shevchenko , "Rafael J . Wysocki" , Mika Westerberg , Johannes Stezenbach , Hans de Goede , Dmitry Torokhov , platform-driver-x86@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org On Tue, 05 Sep 2017 10:53:41 +0200, Lee Jones wrote: > > On Tue, 05 Sep 2017, Takashi Iwai wrote: > > > On Tue, 05 Sep 2017 10:10:49 +0200, > > Lee Jones wrote: > > > > > > On Tue, 05 Sep 2017, Takashi Iwai wrote: > > > > > > > On Tue, 05 Sep 2017 09:24:51 +0200, > > > > Lee Jones wrote: > > > > > > > > > > On Mon, 04 Sep 2017, Takashi Iwai wrote: > > > > > > > > > > > This patch adds the MFD driver for Dollar Cove (TI version) PMIC with > > > > > > ACPI INT33F5 that is found on some Intel Cherry Trail devices. > > > > > > The driver is based on the original work by Intel, found at: > > > > > > https://github.com/01org/ProductionKernelQuilts > > > > > > > > > > > > This is a minimal version for adding the basic resources. Currently, > > > > > > only ACPI PMIC opregion and the external power-button are used. > > > > > > > > > > > > Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=193891 > > > > > > Reviewed-by: Mika Westerberg > > > > > > Reviewed-by: Andy Shevchenko > > > > > > Signed-off-by: Takashi Iwai > > > > > > --- > > > > > > v4->v5: > > > > > > * Minor coding-style fixes suggested by Lee > > > > > > * Put GPL text > > > > > > v3->v4: > > > > > > * no change for this patch > > > > > > v2->v3: > > > > > > * Rename dc_ti with chtdc_ti in all places > > > > > > * Driver/kconfig renames accordingly > > > > > > * Added acks by Andy and Mika > > > > > > v1->v2: > > > > > > * Minor cleanups as suggested by Andy > > > > > > > > > > > > drivers/mfd/Kconfig | 13 +++ > > > > > > drivers/mfd/Makefile | 1 + > > > > > > drivers/mfd/intel_soc_pmic_chtdc_ti.c | 184 ++++++++++++++++++++++++++++++++++ > > > > > > 3 files changed, 198 insertions(+) > > > > > > create mode 100644 drivers/mfd/intel_soc_pmic_chtdc_ti.c > > > > > > > > > > For my own reference: > > > > > Acked-for-MFD-by: Lee Jones > > > > > > > > Thanks! > > > > > > > > Now the question is how to deal with these. It's no critical things, > > > > so I'm OK to postpone for 4.15. OTOH, it's really a new > > > > device-specific stuff, thus it can't break anything else, and it'd be > > > > fairly safe to add it for 4.14 although it's at a bit late stage. > > > > > > Yes, you are over 2 weeks late for v4.14. It will have to be v4.15. > > > > OK, I'll ring your bells again once when 4.15 development is opened. > > > > > > > > IMO, it'd be great if you can carry all stuff through MFD tree; or > > > > create an immutable branch (again). But how to handle it, when to do > > > > it, It's all up to you guys. > > > > > > If there aren't any build dependencies between the patches, each of > > > the patches should be applied through their own trees. What are the > > > build-time dependencies? Are there any? > > > > No, there is no strict build-time dependency. It's just that I don't > > see it nice to have a commit for a dead code, partly for testing > > purpose and partly for code consistency. But if this makes > > maintenance easier, I'm happy with that, too, of course. > > There won't be any dead code. All of the subsystem trees are pulled > into -next [0] where the build bots can operate on the patches as a > whole. But the merge order isn't guaranteed, i.e. at the commit of other tree for this new stuff, it's a dead code without merging the MFD stuff beforehand. e.g. Imagine to perform the git bisection. It's not about the whole tree, but about the each commit. And I won't be surprised if 0-day build bot gets a new feature to inspect the kconfig files, spot a dead kconfig entry and warn maintainers at each commit, too :) thanks, Takashi