From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 5E6CAC43458 for ; Sat, 11 Jul 2026 22:58:03 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists1p.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1wigdu-0003Rq-5W; Sat, 11 Jul 2026 18:57:54 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wigdT-0002kM-ND; Sat, 11 Jul 2026 18:57:28 -0400 Received: from pdx-out-005.esa.us-west-2.outbound.mail-perimeter.amazon.com ([52.13.214.179]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1wigdR-0001MP-Bc; Sat, 11 Jul 2026 18:57:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazoncorp2; t=1783810645; x=1815346645; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=jOWQ3MPKNOWbOTZvD1jfyggpxHQg9YeLUu3eSDISNmU=; b=LMUGEkfpeGM7UdCSUyMyyMmeZ08rL0jfwj/F8f2UkTHdnGkQZST4EMw3 sKSVsPuzpByHKJjXTWs3WOgT9JLp3ul81OKCUk3RBMw2JG2zQgeeeh+H6 m8yrw7kP4nT7LzRkd7Dv0HGaGaK80+Cq/CkCDnBg1jArcufwrriWo2Rhe SicIH2JXdjAy61gRruHWpROP6WZsKxQevQuckQnAEIA+1Gy5H17ccm2ap OQonhvADI4JHFD34n3KVz9mBIoblXwqC5xwv+JziO/8afwD+BMpLsfRyn z0YKHmCzMOZzkPMhID139Zum7tgK93EkNhaGCfoLAe5QTsWCjcSsdrZo1 A==; X-CSE-ConnectionGUID: qzQbjqiTQWSbTGEt3b6D3Q== X-CSE-MsgGUID: STEgFdRuR3qcPoDsdwU3VA== X-IronPort-AV: E=Sophos;i="6.25,154,1779148800"; d="scan'208";a="23479604" Received: from ip-10-5-9-48.us-west-2.compute.internal (HELO smtpout.naws.us-west-2.prod.farcaster.email.amazon.dev) ([10.5.9.48]) by internal-pdx-out-005.esa.us-west-2.outbound.mail-perimeter.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Jul 2026 22:57:21 +0000 Received: from EX19MTAUWB001.ant.amazon.com [205.251.233.51:12053] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.40.123:2525] with esmtp (Farcaster) id 978060d7-e4f5-46cc-a897-f56672c31de4; Sat, 11 Jul 2026 22:57:21 +0000 (UTC) X-Farcaster-Flow-ID: 978060d7-e4f5-46cc-a897-f56672c31de4 Received: from EX19D001UWA001.ant.amazon.com (10.13.138.214) by EX19MTAUWB001.ant.amazon.com (10.250.64.248) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.43; Sat, 11 Jul 2026 22:57:21 +0000 Received: from ip-10-253-83-51.amazon.com (172.19.99.218) by EX19D001UWA001.ant.amazon.com (10.13.138.214) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.43; Sat, 11 Jul 2026 22:57:12 +0000 From: Alexander Graf To: CC: , , , , Song Gao <17746591750@163.com>, Aditya Gupta , Alexey Kardashevskiy , Farhan Ali , Alistair Francis , "Alistair Francis" , Antony Pavlov , Markus Armbruster , Artyom Tarasenko , BALATON Zoltan , Felipe Balbi , Christian Borntraeger , "Brian Cain" , Hendrik Brueckner , Chao Liu , "Huacai Chen" , =?UTF-8?q?Cl=C3=A9ment=20Chigot?= , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Helge Deller , Dorjoy Chowdhury , "Edgar E . Iglesias" , Alexandre Iooss , Eric Farman , Francisco Iglesias , Gaurav Sharma , "Gautam Gala" , Harsh Prateek Bora , =?UTF-8?q?Herv=C3=A9=20Poussineau?= , Jan Kiszka , Max Filippov , Joel Stanley , Jared Rossi , Tyrone Ting , Frederic Konrad , "Laurent Vivier" , Manos Pitsidianakis , Bibo Mao , "Mark Cave-Ayland" , Glenn Miles , Matthew Rosato , "Michael Rolnik" , "Michael S . Tsirkin" , "Niek Linnenbank" , Nicholas Piggin , Palmer Dabbelt , Halil Pasic , "Paolo Bonzini" , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= , "Pierrick Bouvier" , Richard Henderson , Sai Pavan Boddu , Samuel Tardieu , Bernhard Beschow , Stafford Horne , Sergio Lopez , "Subbaraya Sundeep" , Thomas Huth , "Ran Wang" , Hao Wu , =?UTF-8?q?Daniel=20P=20=2E=20Berrang=C3=A9?= Subject: [RFC PATCH 077/134] hw/usb: Give -usbdevice and auto-hub devices a QOM parent Date: Sat, 11 Jul 2026 22:36:10 +0000 Message-ID: <20260711223707.42139-78-graf@amazon.com> X-Mailer: git-send-email 2.47.1 In-Reply-To: <20260711223707.42139-1-graf@amazon.com> References: <20260711223707.42139-1-graf@amazon.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [172.19.99.218] X-ClientProxiedBy: EX19D038UWC002.ant.amazon.com (10.13.139.238) To EX19D001UWA001.ant.amazon.com (10.13.138.214) Received-SPF: pass client-ip=52.13.214.179; envelope-from=prvs=645f258d4=graf@amazon.de; helo=pdx-out-005.esa.us-west-2.outbound.mail-perimeter.amazon.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.445, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, HEADER_FROM_DIFFERENT_DOMAINS=0.249, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_NONE=0.001, T_SPF_PERMERROR=0.01, UNPARSEABLE_RELAY=0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-arm@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org Sender: qemu-arm-bounces+qemu-arm=archiver.kernel.org@nongnu.org The three remaining orphan-creating sites in hw/usb are all command-line and hotplug-adjacent code paths that always run after the machine is up: usb_claim_port() auto-hub -> child of the USB host controller (bus->qbus.parent) usbdevice_create() -> /machine/peripheral-anon, same as -device without id= usb_braille_init() -> ditto (a .usbdevice_init callback) Switch to qdev_new()/qdev_try_new() with an explicit parent and use plain qdev_realize() since the reference is now held by the parent's child<> property. Assisted-by: Kiro Signed-off-by: Alexander Graf --- hw/usb/bus.c | 15 ++++++++++----- hw/usb/dev-serial.c | 3 ++- 2 files changed, 12 insertions(+), 6 deletions(-) diff --git a/hw/usb/bus.c b/hw/usb/bus.c index d45cce7666..725b0303b1 100644 --- a/hw/usb/bus.c +++ b/hw/usb/bus.c @@ -410,9 +410,10 @@ void usb_claim_port(USBDevice *dev, Error **errp) } else { if (bus->nfree == 1 && strcmp(object_get_typename(OBJECT(dev)), "usb-hub") != 0) { /* Create a new hub and chain it on */ - hub = USB_DEVICE(qdev_try_new_orphan("usb-hub")); + hub = USB_DEVICE(qdev_try_new(OBJECT(bus->qbus.parent), + "auto-hub[*]", "usb-hub")); if (hub) { - usb_realize_and_unref(hub, bus, NULL); + qdev_realize(DEVICE(hub), &bus->qbus, NULL); } } if (bus->nfree == 0) { @@ -661,13 +662,17 @@ USBDevice *usbdevice_create(const char *driver) return NULL; } - dev = f->usbdevice_init ? f->usbdevice_init() - : USB_DEVICE(qdev_new_orphan(f->name)); + if (f->usbdevice_init) { + dev = f->usbdevice_init(); + } else { + dev = USB_DEVICE(qdev_new(machine_get_container("peripheral-anon"), + "usbdevice[*]", f->name)); + } if (!dev) { error_report("Failed to create USB device '%s'", f->name); return NULL; } - if (!usb_realize_and_unref(dev, bus, &err)) { + if (!qdev_realize(DEVICE(dev), &bus->qbus, &err)) { error_reportf_err(err, "Failed to initialize USB device '%s': ", f->name); object_unparent(OBJECT(dev)); diff --git a/hw/usb/dev-serial.c b/hw/usb/dev-serial.c index 81897b2d76..4ae3faf656 100644 --- a/hw/usb/dev-serial.c +++ b/hw/usb/dev-serial.c @@ -622,7 +622,8 @@ static USBDevice *usb_braille_init(void) return NULL; } - dev = USB_DEVICE(qdev_new_orphan("usb-braille")); + dev = USB_DEVICE(qdev_new(machine_get_container("peripheral-anon"), + "usbdevice[*]", "usb-braille")); qdev_prop_set_chr(&dev->qdev, "chardev", cdrv); return dev; } -- 2.47.1