From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dl1-f45.google.com (mail-dl1-f45.google.com [74.125.82.45]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5C8FD3B8D4B for ; Mon, 23 Mar 2026 18:25:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.45 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774290316; cv=none; b=N/VlXna7KmG8ce8WkKgIfTmxItJe3upmc6QmaVjCzZBf42AlNjSgd26yfXy0IMw8lV+fPD0dVZvI5SvpLvevE4QWSCI8dcebTq0mT5puMIFpQojAVeLxYVv7ePBEjUU838rYvdqT3PEwX2PRshbExreaZBafk/7OGngdR9EiuMs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774290316; c=relaxed/simple; bh=n2Px9KvrBSca+8wbbFZSgIYdPNKBUj7GDb8kCwrntFc=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=Hnq7ZQ9Unuh2PCT82Q3MC+44JBzyrR79GyH+1AnWWHaNfbm5DK63MD6A+M+8MMzIcCm4bhRDXdVd7TAeIdQfNQcIg40po3TiN68OqP7q41b9p0Q6gavdsz7MAXj2JOP2Wtm1hIksLxEPI2PWMz7MGItUXa6vkjsq+JESrA1YYpU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=CpKLkY5s; arc=none smtp.client-ip=74.125.82.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="CpKLkY5s" Received: by mail-dl1-f45.google.com with SMTP id a92af1059eb24-12776bebe9fso705958c88.1 for ; Mon, 23 Mar 2026 11:25:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1774290311; x=1774895111; darn=lists.linux.dev; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=0+l2i6CJ0UesVmQ48tC67wDfEsqc0p6X8zxC51ds3A4=; b=CpKLkY5sVaGH4g/3nlbjv2f1b50YdMZKaU5w8bjpPSEq2UZA/ZcseQqG4CGt0DzaK/ dwLdYqdccnwxBwyzHWczvdoh2ryFel3B5mmHMHo7omzjK7qraOrhd/p4nZ+QIcs9vt4I C+CPxSYHp3dkRdHiL+jJBwEvQMuHdXJG2cgY5LDRnlfgJ+GGleGtC2IUptjXPhKXbiuJ qSZtxqf4uexASs0S84HOljjvLpBlqr2BwJbMiyAYJhpy3phuz5p90dbFj76ffbc9V0Q2 wLprgK2hZTDpd6RfHFPBEBdxXmgDiis3HPz7HIEBhLMJR/lWUPnFK0xBNj59zDGRj2NN VfiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1774290311; x=1774895111; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-gg:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=0+l2i6CJ0UesVmQ48tC67wDfEsqc0p6X8zxC51ds3A4=; b=PqfHVWZBTFp4p5oiQbIZIkNw9OKiRbMsp8s8u2zeKpM4FbaR/YVIN1uLHmuYEySzNW ccCJBktB5mzA+88+UmckA1eva4Ul/bRXf3zOtZK742TNxP1Uv+M09umLWczJrm5BkCFw 8zfO8XUT9jI82zGMq8QtXMdDoS6deIom9xb/Y+ydqzhaEalPverq0EKGMK1owCZxGbFE H6N28OoxvDXXZ6Epw/CZE7l28ml3YK3WJalrmeveEcLirFqV7Xh1MwpK6kISBSEk1X3d rAkJO88By2ttTODVeaIP+SPHFCzHjdUpUXe1CXJuZn/7Hi+8N9X+OrhhfMgp+8VBuInx rYiw== X-Forwarded-Encrypted: i=1; AJvYcCVfaQ0L/oCea8u7SWIS2BGvMnezr7rvqHihcX6kix/Rzr5O7LuAmhj0sECOlAuyQOqu0JU5xHVWMZMZ+w==@lists.linux.dev X-Gm-Message-State: AOJu0YyMhwVZjCQkNk9kDAbB8LX6kWhpBAfwUUmC2shNCZBTHnopeQM+ VWPIbZnW++KUe3hMmElivGHNyLdSbKuoKdctkeQ0QOzW13QKTSHI/48g X-Gm-Gg: ATEYQzz9/GPxh29YyNiBxPtOujFpQio8sLBFYf1w34kB4qR4VS/qOIc1jCcSUBPffGv lH5vsJcjRBy8kkjy8TqilRnfXznDwxTGUKZx0jIqDwaHTurQ1mQmLLpNIlHcEVHrSz7hFwgAGK9 +sEZ48YwitSdRHIcllqTwbH6c2Gxj5eGSEv7ZEC4pEPGjAJ3/CrvLF22y2zdJrR01mHIAWgDduO nQL9E2bBKv8ou91jPc0paXB1HhsHDj8q2dITI5saeSQ9RyhWwq/QlrJE5tGUKkvZyVXgPKxlpsd yPIQz0v8bHBaeq/cTebiPEr83dXfHkYzxEZL/3ziNsFF/8217TKkXDVWyltxGQDDTRPzMpTZbiG hu1+IZoX/D3+ZLTiHW9smznwoLP0ryIQZa9VXk5jBrHlOMFwAhvWC5Sg9QiuWLlvWkl0DhLC+Bz Iq3PpFw7SYHlDV2V1sYzDLRhn5Z8+AbRaqiOiSOw4tyndBeT0NWd1gG9cnRWDd218XKT7FdaFgi xs= X-Received: by 2002:a05:7023:b14:b0:128:e2a9:d97b with SMTP id a92af1059eb24-12a726dd9b5mr6179340c88.42.1774290310889; Mon, 23 Mar 2026 11:25:10 -0700 (PDT) Received: from google.com ([2a00:79e0:2ebe:8:a296:1211:5ab0:bc95]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-2c10b31bef1sm16253302eec.26.2026.03.23.11.25.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 23 Mar 2026 11:25:10 -0700 (PDT) Date: Mon, 23 Mar 2026 11:25:06 -0700 From: Dmitry Torokhov To: Mark Brown Cc: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Vinod Koul , Neil Armstrong , Liam Girdwood , Lee Jones , Pavel Machek , Peter Rosin , Andrew Lunn , Heiner Kallweit , Russell King , Moritz Fischer , Xu Yilun , Tom Rix , Greg Kroah-Hartman , "Rafael J. Wysocki" , Danilo Krummrich , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-spi@vger.kernel.org, linux-leds@vger.kernel.org, linux-fpga@vger.kernel.org, driver-core@lists.linux.dev Subject: Re: [PATCH 03/10] spi: switch to using class_find_device_by_fwnode() Message-ID: References: <20260322-remove-device-find-by-of-node-v1-0-b72eb22a1215@gmail.com> <20260322-remove-device-find-by-of-node-v1-3-b72eb22a1215@gmail.com> <098e1856-feee-4f4b-8059-85a53967f6b3@sirena.org.uk> Precedence: bulk X-Mailing-List: driver-core@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <098e1856-feee-4f4b-8059-85a53967f6b3@sirena.org.uk> On Mon, Mar 23, 2026 at 05:16:04PM +0000, Mark Brown wrote: > On Sun, Mar 22, 2026 at 06:54:21PM -0700, Dmitry Torokhov wrote: > > In preparation to class_find_device_by_of_node() going away switch to > > using class_find_device_by_fwnode(). > > > struct spi_controller *of_find_spi_controller_by_node(struct device_node *node) > > { > > + struct fwnode_handle *fwnode = of_fwnode_handle(node); > > struct device *dev; > > > > - dev = class_find_device_by_of_node(&spi_controller_class, node); > > + dev = class_find_device_by_fwnode(&spi_controller_class, fwnode); > > if (!dev && IS_ENABLED(CONFIG_SPI_SLAVE)) > > - dev = class_find_device_by_of_node(&spi_target_class, node); > > + dev = class_find_device_by_fwnode(&spi_target_class, fwnode); > > if (!dev) > > return NULL; > > Actually, no - this just looks weird. We're in the middle of an OF > specific function but we're having to jump up to fwnode for no apparent > reason. If we actually decide to get rid of the OF specific function > then I guess but I'm really not convinced this is an improvement in > isolation. Yes, I want to remove OF-specific APIs from the driver core. I also have drafts for bus_find_device_by_fwnode and others. I can make a followup series introducing spi_find_controller_by_fwnode() and removing this OF-specific variant. Thanks. -- Dmitry