Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
Date:   Sat, 13 Feb 2021 16:58:27 +0100
From:   Andrew Lunn <andrew@lunn.ch>
To:     Stephen Boyd <sboyd@kernel.org>, Arnd Bergmann <arnd@arndb.de>
Cc:     Lee Jones <lee.jones@linaro.org>,
        Prashant Gaikwad <pgaikwad@nvidia.com>,
        Tomer Maimon <tmaimon77@gmail.com>,
        Geert Uytterhoeven <geert+renesas@glider.be>,
        Michael Turquette <mturquette@baylibre.com>,
        Bjorn Andersson <bjorn.andersson@linaro.org>,
        Rajeev Kumar <rajeev-dlh.kumar@st.com>,
        Jan Kotas <jank@cadence.com>,
        Russell King <linux@armlinux.org.uk>,
        Fabio Estevam <festevam@gmail.com>, linux-clk@vger.kernel.org,
        Boris BREZILLON <boris.brezillon@free-electrons.com>,
        Ahmad Fatoum <a.fatoum@pengutronix.de>,
        Benjamin Fair <benjaminfair@google.com>,
        Emilio =?iso-8859-1?Q?L=F3pez?= <emilio@elopez.com.ar>,
        Viresh Kumar <vireshk@kernel.org>, openbmc@lists.ozlabs.org,
        Michal Simek <michal.simek@xilinx.com>,
        Jonathan Hunter <jonathanh@nvidia.com>,
        Nancy Yuen <yuenn@google.com>, Chen-Yu Tsai <wens@csie.org>,
        Andy Gross <agross@kernel.org>, Loc Ho <lho@apm.com>,
        NXP Linux Team <linux-imx@nxp.com>,
        Richard Woodruff <r-woodruff2@ti.com>,
        Tali Perry <tali.perry1@gmail.com>,
        Philipp Zabel <p.zabel@pengutronix.de>,
        linux-arm-msm@vger.kernel.org,
        Sascha Hauer <s.hauer@pengutronix.de>,
        Maxime Ripard <mripard@kernel.org>,
        linux-tegra@vger.kernel.org, linux-omap@vger.kernel.org,
        Shiraz Hashim <shiraz.linux.kernel@gmail.com>,
        linux-arm-kernel@lists.infradead.org,
        =?iso-8859-1?Q?S=F6ren?= Brinkmann <soren.brinkmann@xilinx.com>,
        Jernej Skrabec <jernej.skrabec@siol.net>,
        Tero Kristo <kristo@kernel.org>,
        Rajan Vaja <rajan.vaja@xilinx.com>,
        Avi Fishman <avifishman70@gmail.com>,
        Patrick Venture <venture@google.com>,
        Peter De Schrijver <pdeschrijver@nvidia.com>,
        linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
        Nuvoton Technologies <tali.perry@nuvoton.com>,
        Thierry Reding <thierry.reding@gmail.com>,
        Pengutronix Kernel Team <kernel@pengutronix.de>,
        Shawn Guo <shawnguo@kernel.org>
Subject: Re: [PATCH 00/21] [Set 2] Rid W=1 warnings from Clock
Message-ID: <YCf3Iwt3KGZRtNgN@lunn.ch>
References: <20210126124540.3320214-1-lee.jones@linaro.org>
 <161307643148.1254594.6590013599999468609@swboyd.mtv.corp.google.com>
 <20210211211054.GD4572@dell>
 <161309925025.1254594.6210738031889810500@swboyd.mtv.corp.google.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <161309925025.1254594.6210738031889810500@swboyd.mtv.corp.google.com>
Precedence: bulk

On Thu, Feb 11, 2021 at 07:07:30PM -0800, Stephen Boyd wrote:
> Quoting Lee Jones (2021-02-11 13:10:54)
> > On Thu, 11 Feb 2021, Stephen Boyd wrote:
> > 
> > > Quoting Lee Jones (2021-01-26 04:45:19)
> > > > This set is part of a larger effort attempting to clean-up W=1
> > > > kernel builds, which are currently overwhelmingly riddled with
> > > > niggly little warnings.
> > > > 
> > > > This is the last set.  Clock is clean after this.
> > > 
> > > Is it possible to slam in some patch that makes W=1 the default for the
> > > clk directory? I'm trying to avoid seeing this patch series again.
> > 
> > One of my main goals of this project is that everyone (contributors,
> > maintainers auto-builder robots etc) will be enabling W=1 builds
> > *locally*.
> > 
> > This isn't something you'll want to do at a global (i.e. in Mainline)
> > level.  That's kinda the point of W=1.
> > 
> 
> Agreed, but is it possible to pass W=1 in the drivers/clk/Makefile?

About a cycle ago, Arnd and i played around with this idea. The
Ethernet PHY subsystem is W=1 clean, and most of he network stack
is. But keeping it clean is not so easy, when developers do sometimes
add new warnings, since they have no idea the code is W=1 clean.

You are also not the only one asking for such a feature. RDMA also
asked recently.

Arnd, do you plan to push the patches?

      Andrew