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 41A963FAE00 for ; Mon, 29 Jun 2026 09:13:06 +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=1782724387; cv=none; b=NprblxEmJVBX4W6HnSkyuYQ/ra0fuAby5/LMEqCw06SGmIO9jS0IpK7SdbvSeloj3WQNE2FYHFrlAnpgrf58E1DanewE3y2kwt2WREqRNuTjQCroJzU6gpZdE347VHwVx6JmPYbEBB3d61g07yf0iMoPBgmonMcmFZZ65gFW950= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782724387; c=relaxed/simple; bh=dGc6l0sHyACFM3cxNlrW03xZ13Z1lTT+PlM/FFhNpQk=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=aVtSjz6QHuRzgDZq092uj+XZF/TMX5U/g230Z4W5Hw/kOwxU/OvVFqia7qIufFvOANuB7ymznAt1TFD/kFx85n0d0I5FHOKv8hdZxj4Er30FiPaSH83r9FuqJMkbPewxEA7tuADbSmx+wMXW5GhNnQKhBDLNxQ4r+f+yKl1d6gg= 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=NsQ1+L/H; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b=N+oVpNn1; 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="NsQ1+L/H"; dkim=pass (2048-bit key) header.d=oss.qualcomm.com header.i=@oss.qualcomm.com header.b="N+oVpNn1" Received: from pps.filterd (m0279865.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 65T7Dxu52188882 for ; Mon, 29 Jun 2026 09:13:05 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= M5i5ctxLVJhSZjko8lbhXGrG7Lp0ur4VIkT28ZThogg=; b=NsQ1+L/HzzKa/jbr PutaRtGLs/lqX0Hjoiy8VwvPfU0EngaJzRmdcnLjON5Ful8r9tnjj0g6HkOQ+3qw HUBxYxvfVQTfRrw+ZWuHVRQbsGZYp3AGMD1pI+2iIX0z30CONkJIPssq1xiHkRDQ b5yFfU3yxMkivv1ZJgpAd66upGERpF32Prjeof3PT0ZRZ1kzD6Whz22LolmanKDh KlnMVQPobtWOdkr+HLUURTTFpK35nsjTQQK2dMHJ+mUORwjHkvSZCCeK4p+yfTaT sjebXbTO4fbFiWzDEt8DPRM9X3Xlm3GpOGpiYNZYBhHBVwB8hdSPjW1nDSOAxM3p 6Z1yow== Received: from mail-qk1-f198.google.com (mail-qk1-f198.google.com [209.85.222.198]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 4f3m4trg0q-1 (version=TLSv1.3 cipher=TLS_AES_128_GCM_SHA256 bits=128 verify=NOT) for ; Mon, 29 Jun 2026 09:13:05 +0000 (GMT) Received: by mail-qk1-f198.google.com with SMTP id af79cd13be357-92e59b0e0f4so25583285a.1 for ; Mon, 29 Jun 2026 02:13:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oss.qualcomm.com; s=google; t=1782724384; x=1783329184; 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=M5i5ctxLVJhSZjko8lbhXGrG7Lp0ur4VIkT28ZThogg=; b=N+oVpNn1ihJIHhgh54qaVitXNpdtKRtdX/uvWTYZ29ER30PLYd6NZQTui3R9CwBxUs T/p/oeyzLCXgKDCI8mt5raqJYp7Z6AlkmNC5w/LFhj3KqRDZhFBoPlAt25vSoP6YMK7u HB748nAEQIbDy9wWSh+xaburQ1JDZvL9MErT7PUTdcAkLVhB+Ul+mJWyDx7wOaisqbp/ KhJejJ/Gnwy+E352LpMlC0djZ+LxAN3utv1KCV1DahTpf+jjg2+CpZiesn2bsibSqG5O Iq0ektolDbbhK9G7VFbT/V3ExetTU/wnjLV5+qRPGI62Pvn9hqNYuTSN2QttXQXi3EV8 GGmQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1782724384; x=1783329184; 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=M5i5ctxLVJhSZjko8lbhXGrG7Lp0ur4VIkT28ZThogg=; b=Eb8UkEXDDQjbVJSCVOxQrXgH3xHB+t3UASK8f0mWs/y/xBBilwL2ddblz88zVRfexv tvdkZBvHXiH5NCrB0tPlXxCOt2FXogFpop8T7w/UVnL7naw+xP1SzBcsUkxYO/q/ekuQ bPOrkB90qm1l38VLlrHnSvyCOVbrBKJx/xf1+tydwFEvu0aib86yrJLj5sllgnBjPChc dp31+XS6F/ObK96z/eDknZHm31DVn2LZyDL/eqzCyT6zF/JVAwrThEFSHUMDKSzCLJ7F wJGgNI4B74R9GCFv01OJAxDIqL3tne4vfBQsYysEpn4lFDiAMU6LuX2XG4+p6UsUe6D9 3Bsg== X-Forwarded-Encrypted: i=1; AFNElJ/+HYQOhIHOf0yvBdJXyBjoUlskgB+p95bb72qAt+J7S4JAsJd7HKKGVxo4E2u5cH4cRhWzZtDR5nw=@vger.kernel.org X-Gm-Message-State: AOJu0YxzXqH9Dvy4qdeu5ld8PXYRsXuhYtU+YMyFESxD5TYOANbz3pze l0r3DKosV8IqbIhL7VStJZZNG6Tf4gQrTfJDy78O7hQ3LFmnGgbCXH6U3+ugCx2+nQeshg3CwBG Hzhlh79aXdAPvkwo0+/r4PmBG6Q4HmJg44BFpkoQoyzm2Z7DwQOZhjAgNADiSlt0= X-Gm-Gg: AfdE7ckItseY0L9lK3Ekpinr4wLWqHAX0BdtkKLcb5Vc/TyJ1yhdggI5gZzVFPaM+Bq OtyfJX3R/jXiI+F4BpG0/J/FyvSh5WKxmhZMbTmCjDCUuGkd75xT7p+H0IWfg504Ty7DtcImWYH BaY2xxd4Rqxw2g0dYWk3dHgmhReKM6OZOmgKUKSnGBgkHuqV0m1+X5fbFOJdKVM31aB49/zK1TV aQ55CanH//KYczcayIknVzexzkF+vCaMxs3VbPgxMEKEaX7VGe3DbO8jRqkSJI+bYCFSR99PuCn lnIIKKIc2zeZFkN6cJWO9VusUixJM/Zig31BH4CL4limt3BMoF5paU8LFY4O83fxnkr7sgDIIhA uu9EM1EY8hmVQrwvrIBuFg+hDgGT3/6E5AYrcvAw1 X-Received: by 2002:a05:620a:f0b:b0:915:87ad:d5b1 with SMTP id af79cd13be357-9293bb44956mr2587310285a.15.1782724384220; Mon, 29 Jun 2026 02:13:04 -0700 (PDT) X-Received: by 2002:a05:620a:f0b:b0:915:87ad:d5b1 with SMTP id af79cd13be357-9293bb44956mr2587304685a.15.1782724383600; Mon, 29 Jun 2026 02:13:03 -0700 (PDT) Received: from brgl-qcom.local ([2a01:cb1d:dc:7e00:4640:d76a:6126:9b65]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-470f55acda0sm20109240f8f.23.2026.06.29.02.13.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 29 Jun 2026 02:13:02 -0700 (PDT) From: Bartosz Golaszewski Date: Mon, 29 Jun 2026 11:12:25 +0200 Subject: [PATCH v2 02/19] driver core: platform: provide platform_device_set_of_node() Precedence: bulk X-Mailing-List: linux-usb@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: <20260629-pdev-fwnode-ref-v2-2-8abe2513f96e@oss.qualcomm.com> References: <20260629-pdev-fwnode-ref-v2-0-8abe2513f96e@oss.qualcomm.com> In-Reply-To: <20260629-pdev-fwnode-ref-v2-0-8abe2513f96e@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=dGc6l0sHyACFM3cxNlrW03xZ13Z1lTT+PlM/FFhNpQk=; b=owEBbQKS/ZANAwAKAQWdLsv/NoTDAcsmYgBqQjcH6bhLnzENX1KDtInjn8wNXEVpMzGG3K0/Y VfF5Qbu/KqJAjMEAAEKAB0WIQSR5RMt5bVGHXuiZfwFnS7L/zaEwwUCakI3BwAKCRAFnS7L/zaE w4YzD/4oZ/19j0EElAZKwXbz2OGnGHF3kpDRVJlSY4nTjKIU/q/5g4kAa7g7HgqD5/wTjxILTIW sQAeorU9mn+9EOVvNwHtxzokSU8k5EdcBHrnhZzLTnTiBB9JQPU8R4V0i4MpGDeIHmxDSzMQbKm 1qvG48V6xMQvrq9cWgpJBLCcEgKgIbh2vT6IIGlWvQdjeXmMN4wjap6L+/BqoLyLPzFUEiK0NUz 8rZFF3XmWxzgB/COKFdLQ+l1mfFdwqETFxCfKl7m/wlALdCPiZqlBan1LYtlxBacT16ZhkxcnWM n4DtiyUZW2YeD2ic8XqiqdXEIEdisXT2qT9CgrKqvFu9IHg3B2DkgC4nGN3lIdSJKeAQtnXNaQM bDQa2In+ALslR5euQObzgt4MUsT1uB7S+qcZwLK96ljTrOrdfJ5dPQLki/Di/npkZ7yHPwBblMy nu0OYE3AxVeX3Oe3klNK8TgKJ/ek6EsoOx2xGm9m/oNoMyZHZyN6rsJgnMYdDsqo+KsryX8cMGs MM081TDD+/Gt9QQtKLej1rmD3sbjoMMijsRWkX0PPZr8SVPUYTfi25heFzCCg3p0n6WDTVOoMdc xsZC4MFCIiH/aRsCNyUoEd1H3nEYdGmx1lbKlX5RztoZdgA+SPn1tasURA4uiJrB6mgL4GIJjpo Um6GSc3yn04pyLA== X-Developer-Key: i=bartosz.golaszewski@oss.qualcomm.com; a=openpgp; fpr=169DEB6C0BC3C46013D2C79F11A72EA01471D772 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjI5MDA3NCBTYWx0ZWRfXzndrHK5f7U9L 9pURRlkRoKO1mhjOOnE8/B4jU+IDH67wR/fXMMZozTCkAGTOw1fa5aW/N4PiWPuAJGttv0ae3Li UZVuPEpXIzjur3x3bppKKN3L0Nv2sVFUwYvObxYYxe3fgM79g81UjyIcKz03qAUwHBfl1xyrEFt FKvVhjU57szQNrqc7TwskSg1S1lsn23dkXIOpKsplIt7kLS2BFejhaz0tEyqAa/yKXMTpdHaD3p EM3IlJJZsa5XcGn19ty8lq0Bsxlj8q8GjM0z24FFvtev+1QAoOQFmD7+2eZnxvyw4iT8FCNMs0A h3m3MQoglEG7MJBHqAs8p9AwXl/ernKlPp6P0Q16M9G5QXEoprRVS7K+tfblnoVclCYhacdV44/ FlF/jRr+UqiHXSeArPjl0MCrbOyAOg51GmtJrdah8NtvztyuCKkRipjhWs7JozwHoAHjQ6uFujO 3jr6zyY5QkKEv2rAU4w== X-Authority-Analysis: v=2.4 cv=R58z39RX c=1 sm=1 tr=0 ts=6a423721 cx=c_pps a=qKBjSQ1v91RyAK45QCPf5w==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=Q8RKEeUEMY9O-VPP2I0A:9 a=QEXdDO2ut3YA:10 a=NFOGd7dJGGMPyQGDc5-O:22 X-Proofpoint-Spam-Info: AW1haW4tMjYwNjI5MDA3NCBTYWx0ZWRfX+nJF+5nh/enR 2aR5sTp3+J888hw02QEK2mvcqVN2495Iu2bQleHTVGApzIIV7J/HTLU8vyui6tm35ydq8mPJq2G kBvdCTi2aIxSu1bnbvEkzXhADo4N7RQ= X-Proofpoint-ORIG-GUID: 5ycqiIE1XWaSHzjg3LI5f8dPeo5loyq2 X-Proofpoint-GUID: 5ycqiIE1XWaSHzjg3LI5f8dPeo5loyq2 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-29_02,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 spamscore=0 suspectscore=0 phishscore=0 clxscore=1015 adultscore=0 malwarescore=0 priorityscore=1501 bulkscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2606290074 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 fb9120b0bcfe0e7dd9dfc0d29b91e0ad40a01440..3188d5aba5f90622f821c695049cacda030204fb 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 26e6a43358e25cce2e2c38245dc0f0fc43923bf5..870d168aeff8558749eae71723e657ab150ce0be 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