From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 256133AEB26 for ; Thu, 21 May 2026 08:37:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779352651; cv=none; b=Wp2oLuBf/9bfIebvXvr7XC2OxZcc6i+MKM9L7BXKXQ32CADUUr3nj84FaeYksQcQtGpvPMBoqdC5eln47Z2P/QZgIC24zGWBGmA8pJ4mCGGnUhZjLbmhrRjbyprZn7NAbx++e/aIms5Kn8pqP5w0enqFbkPaha1wMhlNf/tjWr0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779352651; c=relaxed/simple; bh=wZzo4F+iEv+cqnjZacAyiOQUCIfz9BeD5LEdTUENfEM=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=rzK4id4MDLoxHzICLkKYOV4TmB3KEt1JDyKVy05taHkg58hyXGpdRAjUm2f/qMBjE5yZ1su5cfCXBfF/T7eu2U1aQXhJ74V2jckUNXIswIGo6VrPq8dy2/8VNXcLDoxJiigxTMvZKaip1uXOHG58V4GA2oaUY5q88DGUf8GuJuQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com; spf=pass smtp.mailfrom=oss.qualcomm.com; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b=TGSv8YHH; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=Q+Iq35jx; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=oss.qualcomm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=qualcomm.com header.i=@qualcomm.com header.b="TGSv8YHH"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="Q+Iq35jx" Received: from pps.filterd (m0279863.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 64L7M9KF118986 for ; Thu, 21 May 2026 08:37:27 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qualcomm.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= m0PJY/EBXaS+NGqlIlXtzUywSQPQ33CG8O0mf5HsOtc=; b=TGSv8YHH2HHm9gce LO05rZSE6dZib/XINNl6hu/QvmGJtgVvta9prqDrYEhZLuap803BPNi5UJ6pclC5 8u54UuNFHHifWzorPhqhoAujRKyfX2pOVUtZwN4/RWtZiEIMKIKCbjA78t55rW4j NeAm+13eASkdx3gOsHfhlBsFIp25sLXiXlSJKlr4hMmSH+3icRb13RT2tf2A6xfl Khpg0wQCdp2jMuElLBz/vJ1F4RrRglBsQ+G+9NE6yUo2soHkDy+sOzVG0O6oTes+ tevab/rwt7fnTEpBxDXzs7qe82eYsaXRep86pEQUxvQmJYEi3ALTpInszxXfFbG+ FnGD5w== Received: from mail-qt1-f198.google.com (mail-qt1-f198.google.com [209.85.160.198]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4e9ee8c18y-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Thu, 21 May 2026 08:37:26 +0000 (GMT) Received: by mail-qt1-f198.google.com with SMTP id d75a77b69052e-516458449d4so69312701cf.1 for ; Thu, 21 May 2026 01:37:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1779352646; x=1779957446; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=m0PJY/EBXaS+NGqlIlXtzUywSQPQ33CG8O0mf5HsOtc=; b=Q+Iq35jx1DZpTNiLVHzM5216k3jFIYQ/vOsMtjVb3H+PfqXodMSglLhjZB2LTwBfNz +FnIagPxerOItHadvkpZ/tctBt1PH8bIFkTk4t22XgYAWXofCZ3Hz0PyYoNZcxcLY9L7 1Uws/SjmHoLVozsoOqTeOyl/1O8URb26f/lUI3xdao1L1vEtUiW/iNxitmQZFnXPsu7B KbfBDP91zlPPVD9EJ5FKVrS1yPtnDfi6N2RR7lYZShcuZ99rUDgKV0OIlH2QxIEcy6na 7kCi6um6UeYweTesC/5nw1Zlb4LX3G0tt9OKrGe0hyg+K+OHn5nUm7zFIolL+UCWYHN+ BNPQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1779352646; x=1779957446; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=m0PJY/EBXaS+NGqlIlXtzUywSQPQ33CG8O0mf5HsOtc=; b=odKngKJe69QA8/ZZUSoEjwdJHTl7AVf4/reDXR8FnD8PxHcItRy7sIjF2OCAwgQeAz bdS185voA0FOiQIUXISdq3dtoJOsRZSFyX7JWYeizaKfEYKJdDCNb1f6opu0Zyp3fWE1 ouKRKRWCWuVt4utGqs0H3DA8AiVBA6yx+xmu1yyypZiffMXGErFOzVX+MCIe/nAFMWBO vDypxJQ5o3C0R/+CUCJchQLCaoXcaMoqs3ql99EvF0ZzDW9sXCgLEwYeh9/9X0PwCV4N jL19EhOWmfZip7XGWvHugqXe0XSb39HS1NUgQAQstgZzDBjeiK8b4W9oxakCOPu8XGyD A5LA== X-Forwarded-Encrypted: i=1; AFNElJ80lw71PQpRch3YyTY1D81sq1vTA0S5gxHjQLOrhrI3mxA7YbdQWpowQTGUlE3ZEfa2CVwTXLxrOWjK@vger.kernel.org X-Gm-Message-State: AOJu0YyzAwwWTh4pyOypa4MqLTP9IH0v0tiRJ6P33UwD6eOO6lcs1pk1 M2veRyfWO/lcvrUmr6/IXCl16TGcMdmFqFX88vF968+OqM/jNmsQBiiUN5L8DaE2jKuiQ/GFD98 O+lG0sKrZ7vAYf3QibYQAf7p+K2PFtLc8L/+Gp1FRs9QOvdzUhqlan6eyyxUko7ee X-Gm-Gg: Acq92OHgKNm0SGdobxEwI1MpA7kCdPHGamplMfoxKZCgl37svz/NHBFVr+1UlXRqpEF m1GnFvCpoazkvp80rfZa7HUcVAYjpie6Ck/H7OI0aqXrnLIuYtkoG8RTKXXbLrWgxCG+NQAjUlw 8Pb3P8afC7qTNqN8ZcnBu8LtZTMzqYxy9Bu451ZR+iJuX98dJ9JiXH2oxI1gGDwEcAcjFwnAF1t ICEJadnl8yn/oS654ef0JgrYww1YqGfl1P06cMtDv5Gknk2t7ew3y8LiS2nsTTzZTTAbYlxtly5 PIMDBy8hOtbzfLmXpnmLGjq1AKxoT5GPdnzFUTbOHjVRQdx5gRi0xBzK90W2QEfG7ZOvNl52uvn RQUbTavxYAJ7F8nP3IBxOm0hOLJRi0l2ycOvSgMHgZk/6LdILkxU= X-Received: by 2002:a05:622a:5588:b0:50f:817c:2fe6 with SMTP id d75a77b69052e-516c53d8aaemr28109101cf.2.1779352645855; Thu, 21 May 2026 01:37:25 -0700 (PDT) X-Received: by 2002:a05:622a:5588:b0:50f:817c:2fe6 with SMTP id d75a77b69052e-516c53d8aaemr28108511cf.2.1779352645294; Thu, 21 May 2026 01:37:25 -0700 (PDT) Received: from brgl-qcom.local ([2a01:cb1d:dc:7e00:bb10:ae82:b7c3:d15a]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4903caede9fsm10502405e9.14.2026.05.21.01.37.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 21 May 2026 01:37:23 -0700 (PDT) From: Bartosz Golaszewski Date: Thu, 21 May 2026 10:36:29 +0200 Subject: [PATCH 06/23] driver core: platform: provide platform_device_set_of_node() Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260521-pdev-fwnode-ref-v1-6-88c324a1b8d2@oss.qualcomm.com> References: <20260521-pdev-fwnode-ref-v1-0-88c324a1b8d2@oss.qualcomm.com> In-Reply-To: <20260521-pdev-fwnode-ref-v1-0-88c324a1b8d2@oss.qualcomm.com> To: Lee Jones , Mark Brown , Thierry Reding , Sebastian Hesselbarth , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Srinivas Kandagatla , Greg Kroah-Hartman , Vinod Koul , "Rafael J. Wysocki" , Danilo Krummrich , Rob Herring , Saravana Kannan , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Andi Shyti , Andy Shevchenko , Joerg Roedel , Will Deacon , Robin Murphy , Doug Berger , Florian Fainelli , Broadcom internal kernel review list , Ulf Hansson , Frank Li , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , Matthew Brost , =?utf-8?q?Thomas_Hellstr=C3=B6m?= , Rodrigo Vivi , David Airlie , Simona Vetter , Peter Chen , Paul Cercueil , Bin Liu , Philipp Zabel , Maximilian Luz , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= , Krzysztof Kozlowski , Benjamin Herrenschmidt Cc: brgl@kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-sound@vger.kernel.org, driver-core@lists.linux.dev, devicetree@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-i2c@vger.kernel.org, iommu@lists.linux.dev, linux-pm@vger.kernel.org, imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org, intel-xe@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-usb@vger.kernel.org, linux-mips@vger.kernel.org, platform-driver-x86@vger.kernel.org, Bartosz Golaszewski X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2715; i=bartosz.golaszewski@oss.qualcomm.com; h=from:subject:message-id; bh=wZzo4F+iEv+cqnjZacAyiOQUCIfz9BeD5LEdTUENfEM=; b=owEBbQKS/ZANAwAKAQWdLsv/NoTDAcsmYgBqDsQjLvHgEkgDUYcyQqS+YI0tDoWCf94BkOfk6 vDphiey46iJAjMEAAEKAB0WIQSR5RMt5bVGHXuiZfwFnS7L/zaEwwUCag7EIwAKCRAFnS7L/zaE w10mEACuBjw1mRfWGN/zZYles7aGCy04DbiAjWjYefDvcAqjwNHVbQPGTfR9vvDt9Vt3opZlUfJ 1ytnUuq6dFumO5reYJ78tEy9o+PkI8VY7UoUHI9DX2cKKEeA6fkKzjp3sYJvTgqJELasQOkPH8y PlZgKzt0c0z6CLrSP/lqxiiyL6Roc+RIVEg6THFxHR5OoOrX4+KXE7TpYW/+9R6Q2BP2a5mjGKI I8sHIVxHMgpemPUcVLU4/uTLyuQeLaADPratIxqvFuTx0AW6AOYaFvaamCkQMd//4qESASqVPxq Iqc2iJqP6r0b+IvjJO1nHSUPlB1yTjcDLn+baiOlmwj1skALP2IMeucYdve6oLVmXSGYq6qAYq4 gC7R+np/sgYQ3f5xLBo/KtwsaKQb6TSf+ZaoZnYHVqW+A9akzduAnNlWFKW0UODQ9PcBDZadov/ 3mRLrzwuMo293FdKXtsUcYpBMNIX1XEo5vV2REkvT+e4lLq2oAkW+Y6KmtTYYkzZs+myeRmoTWk ebeqMSKJ7NApWk3IX+x4SN84ESMRkBiuAhe1JJ+h0WQ/IOtxcd82UQCshyJxQ8qXTzoFMc2kEEB 3KNvxUJHXaBt2BDRHwinv0uRBTS3Qwt835TjvmqeqIrB1g5DU3xqpgR0Yja7mcdp35huKbkn9rN lHge5prVxo4DdaA== X-Developer-Key: i=bartosz.golaszewski@oss.qualcomm.com; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 X-Proofpoint-ORIG-GUID: Q-yrfozpr9LPVVrh0V5fBvBv1cEMGqZg X-Authority-Analysis: v=2.4 cv=e5k2j6p/ c=1 sm=1 tr=0 ts=6a0ec446 cx=c_pps a=mPf7EqFMSY9/WdsSgAYMbA==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=EUspDBNiAAAA:8 a=Q8RKEeUEMY9O-VPP2I0A:9 a=QEXdDO2ut3YA:10 a=dawVfQjAaf238kedN5IG:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTIxMDA4MyBTYWx0ZWRfXzcyXsu7MAHNY TogZVXWLi2Q7ufQ/36WbckXBuFu6gW21arJbYkBgeuSLMQw4wkM4ov4ymwvgBL8jP7bHQ3ejwuG +vYdvI3JNeg5Fqo6zT73foxJsaKUA446OdN6qoWRrqBT9UJK4+8W6QpAIHWqBLW1Fq4mMrs+oYv ZvEoEvohb8FyffzCvYFhU3ril7uQFMoCJHk/bfc8PTAv/Bq7GCxs8/UA0n9f1V/S1X/uQsxXaKk ru4iogc4xKp1XpdpntPZiDuogS8DQnPAlTILjygGJEAOH0p/UDLfSjYn86mcs/kyN/ESj7clxBW tUO1oIS7gp247tbru95JqNHJpFhnyxQuy3Td2LO7UdZa3t5TJJ04m6+bMrQjMQeoy8r4Xgimdsm laGzo2/CZxIKkqDdFwuxu6fyI1FVG6p0nln9O92y6qGYVa/GYPYMCuOa/qIx0DQ0E6dD3TNv66a zt3kA3LbVR64sC3Pwzg== X-Proofpoint-GUID: Q-yrfozpr9LPVVrh0V5fBvBv1cEMGqZg X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-21_01,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 phishscore=0 malwarescore=0 bulkscore=0 lowpriorityscore=0 adultscore=0 suspectscore=0 priorityscore=1501 clxscore=1015 impostorscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605210083 Encapsulate the reference counting logic for OF nodes assigned to platform devices created with platform_device_alloc() in a helper function. Make the kerneldoc state that this is the proper interface for assigning OF nodes to dynamically allocated platform devices. This will allow us to switch to counting the references of the device's firmware nodes, not only the OF nodes. Signed-off-by: Bartosz Golaszewski --- drivers/base/platform.c | 18 ++++++++++++++++++ include/linux/platform_device.h | 3 +++ 2 files changed, 21 insertions(+) diff --git a/drivers/base/platform.c b/drivers/base/platform.c index 4824d9a2edbe9ff86cc9893cd74688e9cbb6483e..ec53383fa17ac29ea3b15b61f97ae65ae8ca22ac 100644 --- a/drivers/base/platform.c +++ b/drivers/base/platform.c @@ -693,6 +693,24 @@ int platform_device_add_data(struct platform_device *pdev, const void *data, } EXPORT_SYMBOL_GPL(platform_device_add_data); +/** + * platform_device_set_of_node - assign an OF node to device + * @pdev: platform device to add the node for + * @np: new device node + * + * Assign an OF node to this platform device. Internally keep track of the + * reference count. Devices created with platform_device_alloc() must use this + * function instead of assigning the node manually. + */ +void platform_device_set_of_node(struct platform_device *pdev, + struct device_node *np) +{ + of_node_put(pdev->dev.of_node); + pdev->dev.of_node = of_node_get(np); + pdev->dev.fwnode = of_fwnode_handle(np); +} +EXPORT_SYMBOL_GPL(platform_device_set_of_node); + /** * platform_device_add - add a platform device to device hierarchy * @pdev: platform device we're adding diff --git a/include/linux/platform_device.h b/include/linux/platform_device.h index 975400a472e30e2f98cc8f13bc36a63129bd4fcf..21f7d8a7f4b5c9a47d56d80a69802b3f84457ef7 100644 --- a/include/linux/platform_device.h +++ b/include/linux/platform_device.h @@ -19,6 +19,7 @@ struct irq_affinity; struct mfd_cell; struct property_entry; struct platform_device_id; +struct device_node; struct platform_device { const char *name; @@ -262,6 +263,8 @@ extern int platform_device_add_resources(struct platform_device *pdev, unsigned int num); extern int platform_device_add_data(struct platform_device *pdev, const void *data, size_t size); +void platform_device_set_of_node(struct platform_device *pdev, + struct device_node *np); extern int platform_device_add(struct platform_device *pdev); extern void platform_device_del(struct platform_device *pdev); extern void platform_device_put(struct platform_device *pdev); -- 2.47.3