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Wed, 9 Sep 2026 10:48:01 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ThreadId: APaZlxbVBos- Date: Wed, 09 Sep 2026 16:47:41 +0200 From: "Arnd Bergmann" To: "Johan Hovold" , "Arnd Bergmann" Cc: "Lee Jones" , mfd@lists.linux.dev, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, "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" , "Dmitry Torokhov" , "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, "open list:GPIO SUBSYSTEM" , 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 Message-Id: In-Reply-To: References: <20260909132153.1596191-1-arnd@kernel.org> <20260909132153.1596191-10-arnd@kernel.org> Subject: Re: [PATCH 09/14] mfd: remove unused lm3533 driver Content-Type: text/plain Content-Transfer-Encoding: 7bit On Wed, Sep 9, 2026, at 15:44, Johan Hovold wrote: > On Wed, Sep 09, 2026 at 03:21:46PM +0200, Arnd Bergmann wrote: >> From: Arnd Bergmann >> >> This driver has apparently never had any users, as it does not support >> devicetree probing, and no lm3533_platform_data definition ever >> existed upstream. > > I don't believe we ever required board files to be upstreamed? No, but there is a general requirement that code must be usable. With my series to drop almost all Arm board files, the use of platform_data becomes so obscure that it becomes reasonable to assume that any driver that requires platform_data and does not already have an upstream definition for it is fundamentally broken. The only platforms that still use board files now are: arm/omap1 arm/s3c m68k/coldfire mips/alchemy mips/bcm63xx mips/rb532 mips/txx9 sh/sh77xx All of these are now over 20 years old, so I don't expect anyone to add new board support or maintain boards for them except for what is already upstream. > There's also on-going work to enable devicetree support for this one: > > https://lore.kernel.org/lkml/20260617080031.99156-1-clamor95@gmail.com/ Ok, I've dropped this patch, thanks for pointing this one out! Arnd