From patchwork Fri Feb 16 20:32:08 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bartosz Golaszewski X-Patchwork-Id: 13560596 Received: from mail-lj1-f179.google.com (mail-lj1-f179.google.com [209.85.208.179]) (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 9D6B715099C for ; Fri, 16 Feb 2024 20:33:30 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.208.179 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708115612; cv=none; b=In7Xsj3/PaUtHjucCbPVGpPlYfABn4ABV5UIfioic9mjpvXsvrt9O/ML64llsiv/R6lQA8jGNcQ42N5uKAlgD42XXXizhtUCP6TwDd2qfYwGO8vlm2R6D+Kqgwmjgc5yS9QeaFnCSS0LsFysXNtA2LNI1LVuAfWDaXcYwE6b3Yg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1708115612; c=relaxed/simple; bh=iWQpZyVUYNR0FgdTLJWWfXolJLly1aZ0q2sdWcfiADU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=HmQ3F3AtXYmho2xl1uFIuqxY21soBKltA6U5b8IeaBSJpapeLqF7UqkBsMWWZmgmZq3+tWlmwEmQBXwjW3H3s+8tuoAV2GX3rs9GoCQZdaUHLQ/E0mTpuWJScUlUS2gaEJFlonXg0iuIIuDroupKjsSpYtzHd+eFnzYfJcttcN4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl; spf=none smtp.mailfrom=bgdev.pl; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b=JlO18UXd; arc=none smtp.client-ip=209.85.208.179 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=bgdev.pl Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=bgdev.pl Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=bgdev-pl.20230601.gappssmtp.com header.i=@bgdev-pl.20230601.gappssmtp.com header.b="JlO18UXd" Received: by mail-lj1-f179.google.com with SMTP id 38308e7fff4ca-2d11c55d7f2so34620541fa.2 for ; Fri, 16 Feb 2024 12:33:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bgdev-pl.20230601.gappssmtp.com; s=20230601; t=1708115608; x=1708720408; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=VPKtETY44L+sLLhmL3uaX4nFnllKG+8eyvkbzTNtgX4=; b=JlO18UXdAY40EYPh5vQMlAFsIPsHixgABilZ9EkLiVRSYzLOSjW5w+ypfcbuMeHrfZ CjEn1EyR1b4/rA7fxre/BWWN0FumJvdbBNy7LiHW23Uu6JgXO3AM6b3HgrQuCxUexSO8 8XpfNDuMNPm8XbbzzOhjM0K5uGImrSyKsDGkLl9V7jvCAEkeoP4cJwkHiR5U34FMABTe qFXW5mmFrbqL/QQqcnHl68kZl3ACLvKxIv8BqgCo+nyqzzqAviso6s6C5/trv4oan69U Q0X06jqsaVauq/rzu3/3ZqSQftU65tbC/WCOJ4wIWUW7SJBKnuP/5gxaSFP1Pe861jde u2rg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1708115608; x=1708720408; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=VPKtETY44L+sLLhmL3uaX4nFnllKG+8eyvkbzTNtgX4=; b=aVFvsszW0nLZwhYMYUhdobiganrZaL8oVoXHVCvFmlmP6VTzGfc9RbkEQVCHWzT6hF YEGYN8z10bVBrftCpkjjlmzkkPORwsU5hFzYbTyoxrOoOIAMMYuUuvBVpkYw9O7QwaAx tPi2QFK8QIqMvaa44RlG9MUhAoxDqkJgX4INKHwMMoYs8TGlrNMRFn3JnvZqR8Fpv6eh XcrLSxOlnhovW5CWbVdX/r5WcqxGVUIZv8Sg+1Eg9S8sSHFEjyfVtnK1+OAJn49bnvSh gcUmdQMx/u1YZ1JZkPaaoCfNYGfdX2PmRo6K0aga7ocmI3MDa4P9AgYbKOXPChzmy2IA t5Pg== X-Gm-Message-State: AOJu0YyYpI8oHps8JkqzXzpUc0EFPGUhD+835BUcjuz3D1XgYMvCbwcr yMbDBUPpGR9L7Eo0GfN9t51pK3G0mf9CBHMI7f2Boy/8cbwuEDSQwwfN2rVR3/8= X-Google-Smtp-Source: AGHT+IEA6PoShhob8vA8LHOTLObGA6LSgflaMRnbW+2bPuCja7p6p6LxUhdbKaL3IWhCeNx0gCY0nA== X-Received: by 2002:a2e:9198:0:b0:2d0:cfe6:4364 with SMTP id f24-20020a2e9198000000b002d0cfe64364mr4325724ljg.36.1708115608679; Fri, 16 Feb 2024 12:33:28 -0800 (PST) Received: from brgl-uxlite.home ([2a01:cb1d:334:ac00:7758:12d:16:5f19]) by smtp.gmail.com with ESMTPSA id m5-20020a05600c4f4500b0041253d0acd6sm1420528wmq.47.2024.02.16.12.33.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 16 Feb 2024 12:33:28 -0800 (PST) From: Bartosz Golaszewski To: Marcel Holtmann , Luiz Augusto von Dentz , "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kalle Valo , Bjorn Andersson , Konrad Dybcio , Liam Girdwood , Mark Brown , Catalin Marinas , Will Deacon , Bjorn Helgaas , Bartosz Golaszewski , Saravana Kannan , Geert Uytterhoeven , Arnd Bergmann , Neil Armstrong , Marek Szyprowski , Alex Elder , Srini Kandagatla , Greg Kroah-Hartman , Abel Vesa , Manivannan Sadhasivam , Lukas Wunner , Dmitry Baryshkov Cc: linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pci@vger.kernel.org, linux-pm@vger.kernel.org, Bartosz Golaszewski Subject: [PATCH v5 11/18] PCI/pwrctl: reuse the OF node for power controlled devices Date: Fri, 16 Feb 2024 21:32:08 +0100 Message-Id: <20240216203215.40870-12-brgl@bgdev.pl> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240216203215.40870-1-brgl@bgdev.pl> References: <20240216203215.40870-1-brgl@bgdev.pl> Precedence: bulk X-Mailing-List: linux-bluetooth@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Bartosz Golaszewski With PCI power control we deal with two struct device objects bound to two different drivers but consuming the same OF node. We must not bind the pinctrl twice. To that end: before setting the OF node of the newly instantiated PCI device, check if a platform device consuming the same OF node doesn't already exist on the platform bus and - if so - mark the PCI device as reusing the OF node. Signed-off-by: Bartosz Golaszewski --- drivers/pci/of.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/pci/of.c b/drivers/pci/of.c index 51e3dd0ea5ab..b908fe1ae951 100644 --- a/drivers/pci/of.c +++ b/drivers/pci/of.c @@ -6,6 +6,7 @@ */ #define pr_fmt(fmt) "PCI: OF: " fmt +#include #include #include #include @@ -13,6 +14,7 @@ #include #include #include +#include #include "pci.h" #ifdef CONFIG_PCI @@ -25,16 +27,20 @@ */ int pci_set_of_node(struct pci_dev *dev) { - struct device_node *node; - if (!dev->bus->dev.of_node) return 0; - node = of_pci_find_child_device(dev->bus->dev.of_node, dev->devfn); + struct device_node *node __free(device_node) = + of_pci_find_child_device(dev->bus->dev.of_node, dev->devfn); if (!node) return 0; - device_set_node(&dev->dev, of_fwnode_handle(node)); + struct device *pdev __free(put_device) = + bus_find_device_by_of_node(&platform_bus_type, node); + if (pdev) + dev->bus->dev.of_node_reused = true; + + device_set_node(&dev->dev, of_fwnode_handle(no_free_ptr(node))); return 0; }