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Wed, 09 Sep 2026 10:27:00 -0700 (PDT) Received: from google.com ([2a00:79e0:2ebe:8:2d43:5153:5c50:643e]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-3339a534df1sm52422943eec.7.2026.09.09.10.26.57 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Sep 2026 10:26:59 -0700 (PDT) Date: Wed, 9 Sep 2026 10:26:55 -0700 From: Dmitry Torokhov To: Arnd Bergmann Cc: Lee Jones , mfd@lists.linux.dev, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Arnd Bergmann , Daniel Thompson , Jingoo Han , Mauro Carvalho Chehab , Liam Girdwood , Mark Brown , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Guenter Roeck , Linus Walleij , Bartosz Golaszewski , Jonathan Cameron , Pavel Machek , Michael Hennerich , Support Opensource , Sebastian Reichel , Alexandre Belloni , Helge Deller , dri-devel@lists.freedesktop.org, linux-doc@vger.kernel.org, linux-media@vger.kernel.org, devicetree@vger.kernel.org, linux-hwmon@vger.kernel.org, patches@opensource.cirrus.com, linux-watchdog@vger.kernel.org, linux-gpio@vger.kernel.org, linux-iio@vger.kernel.org, linux-input@vger.kernel.org, linux-leds@vger.kernel.org, linux-pm@vger.kernel.org, linux-rtc@vger.kernel.org, linux-fbdev@vger.kernel.org, linux-sound@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, llvm@lists.linux.dev Subject: Re: [PATCH 00/14] mfd: unused driver purge Message-ID: References: <20260909132153.1596191-1-arnd@kernel.org> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260909132153.1596191-1-arnd@kernel.org> On Wed, Sep 09, 2026 at 03:21:37PM +0200, Arnd Bergmann wrote: > From: Arnd Bergmann > > As part of my cleanup of old platforms, I had a look at all drivers that > may have become unused because the last platform_data or DT definition > was removed, or because of unmet Kconfig dependencies. > > These are all the mfd drivers I found. The first ten in the list > actually turned out to have been unusable long before my series, and > I have added explanations on how I determined this in each patch. The > last four patches are still in use in linux-7.3 but become unused after > my series [1] that I hope to get merged for 7.4. > > Somewhat unorthodox, I took a shortcut here and remove both the mfd drivers > and the corresponding subsystem drivers (gpio, hwmon, iio, input, led, > media, power, regulator, rtc, video, watchdog, asoc) in a combined patch, > to simplify the interdependencies: removing just the mfd driver would > leave unselectable or broken drivers in other subsystems. I also have > additional patches for each of the other subsystems, currently a total > of 300 patches, many of which still need better testing or proper > changelog texts. > > Please let me know if you all think this approach is ok, or if I should > explode this further and turn these 14 patches into 70 individual ones > by splitting them per subsystem. Sounds good to me, especially if Lee makes an immutable branch from this pull so we can all pull it in... Acked-by: Dmitry Torokhov # for input Thanks. -- Dmitry