From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-dl1-f52.google.com (mail-dl1-f52.google.com [74.125.82.52]) (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 B40663CCFBE for ; Mon, 23 Mar 2026 18:25:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.82.52 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774290317; cv=none; b=qutgzVX7YPXLP9O+BazHA3FWZBi1WdXuLt6XVgOjCLtNrGHAX3dYCTKGmM5YFoS25X2PSRSWGeEBv8HfEezVNjo5DecW1sYDfzh6TyV2S3mMH9IuspC6eZ12wlKpr56YU8aD8dXF7UHv1TphG9bNcNZMC6GpAxqO41VMa6DgsCM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774290317; 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=Q5Un0e3px9/UFarDWgnAwASNgSMuf8UTtD2fo6SE2K498OUhIlVscUL52LeYo4BMT/HpFKE8WKe9yESD5r99gIgd1vXusj7UCMV3lGNvAvDphlQqtASBAqx2EaS2fUTdi3nn4bZxMePtUb3Bjk3pvj1ghJCXXymuAx0wnXYSfAo= 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=C6BhqKuv; arc=none smtp.client-ip=74.125.82.52 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="C6BhqKuv" Received: by mail-dl1-f52.google.com with SMTP id a92af1059eb24-1271195d2a7so870709c88.0 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=vger.kernel.org; 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=C6BhqKuvTpMhqlgVXLg6kGG0gezlJsDbJftPaxV/tEZBZA6D9EC2wRDTvqtCMVxwz4 /8ZOvMrwAa3W5fYzMgFaX3I6Ptx0VKBRK4Lgpt8ILJokWwtxMfTBzc3/PzPXg70Oj4np jpl5Jmo0t7/5kzqB3fsutAMjgJ1YqE19eixjvR7p/ri4XkpXb+LFuk8M8KLyDG6+2rqI tb8Hveoxujn0S2XUx8RQ18UNQBRNT7oS0go8XLXN5G5pAoMBFsg952vDwr6+W4olLNAq zg9N/rTnW/muM4oDXZA9ksnKerCiBQ8d0Y181a4ort6rAdjU48nIksLnZXq4bqI32XqA 3OJA== 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=NsoI/kIdMrCzCbTQKrM/zbAIJ82x8vvPoRU78oy+HBjnSXfh2h/qqzMHee3uvH6iVJ bggpSYIyBk3p5OeiKEJoTYW8YUPlQGlO1wLsNxIUl+NFUf4c/237eOC70ad08Ms47+II HiwXe7fP2FAh5cQMntiDZhSrhbjtwl4FWpkaBFIR5iwx6LTutq9gIkIKgMFZKkqce9i+ qVXkrMEzMDnsnHqPwbdI10pPHEj3dZ06niE9+gsJ4Ie7geMoJBG7TwMIH0a0upf9mLGU z4J7N8tYAIY7mgF3BiqU3zXzPYkQvDMUGemEOjbYsXcWmepbKC5S1BRTTpdn9oiHXEZG MD3A== X-Forwarded-Encrypted: i=1; AJvYcCVx48OGS8E7mJpfZ9wGkUpkamcb9oJ/uaJjHFk8XidJ1e04k4tMV9MpdKUtf/H0EJ9h1Jozm8M=@vger.kernel.org X-Gm-Message-State: AOJu0YzljV0gaHgQyVjTQm320NEsVHaTDEW+keC182TpDy9WtcYFIwWl ViYrQ1D9ZToniMVyI6xuhnHaVaURFxQZC3iV02Sz8wWxk/ZNjRNh6v7Q X-Gm-Gg: ATEYQzyUNdVPoimwAAH17kiS7H6efAveCkS47PHuUiZzEVFDUDukfuW7kKlMyoB5Sua IdY0sUyB72zZO2KxnUavxMtxTqZdz1npOFqSNo9JJhYKoeTxHBtVxsPDlYfKDeLb2NabSCbPXEY nZUCwX6MYFYT1xZUDq+uD2YuvLIAT58wCEZnrsCakJj9AMFFltxUsTAw8hGHLAKTe8R6QraDHZm gb1qhDM/jGXvdVE9jbRxY2R01wh3Gf/ggsAmFzy29gXTwuFLacJk6EL+rWBCmaJus3zUoEHpklM +uw8YjtS1ROKEPQcdCKmP9qDl4SjkhrtkYd1lfe40VGHKrSkSuNSoDVS48JkInyNkpxRtIzxYHX 6nOYVh7hnxTiarVUXnn7ueWaaDgMV+f9cm+sad+5YvHpK70ucu9H6v0StHpE718bw0H9CnNtQ3G 5XbLGBpdwToGGF0XM33TruoJ/DX3wwB/+sColJQ/qK1pIzM25JfWwyoeWs+TTYBR5ZRIEFGtHNd U8= 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: netdev@vger.kernel.org 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