From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f42.google.com (mail-pj1-f42.google.com [209.85.216.42]) (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 542D63F65EB for ; Fri, 4 Sep 2026 08:43:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.42 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788511442; cv=none; b=VTwy1Z2EpsJNPp3KIPAqMvjgyjFuM2ACEsDdSCPBfPMQMsiPQXIbR1XYFbcJ2dYx2FpsgPjfv0bBU4nNAPw60NaH/QRFHUtX4+ai/3iWGx0q5DsFFm18symeOw+Ij1y22HM03omV8UggAFL65YYez8sdyzaJ2Wq89D074xoNVUM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788511442; c=relaxed/simple; bh=mVnW+34H8pDaAYsu6do3l4kmcFOsUXTOE/2T16cFwQo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=lHWNQ44BhxZfcUMLPx0R1W2jjIz6/zREDWSrgu9v2z6zAHEE9bQ4SUY3FXzwjUNEgiYAGfaxTN9DBu1sOFt0zUHutnueselxOCziQXE2H1TFexfFS1zdXv4EhzRyP/rBs5QHk8MazSzfB7K1qYOImsUBb0E9n5lK/8JFXKrMUWA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org; spf=pass smtp.mailfrom=chromium.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b=GrmTRetE; arc=none smtp.client-ip=209.85.216.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=chromium.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=chromium.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=chromium.org header.i=@chromium.org header.b="GrmTRetE" Received: by mail-pj1-f42.google.com with SMTP id 98e67ed59e1d1-3964dfb5a69so989633a91.1 for ; Fri, 04 Sep 2026 01:43:57 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; t=1788511437; x=1789116237; 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:content-type; bh=KKk9MsFCuRaE3YN06XOCWIV3dU/ufhZe2dVPkS7i8qI=; b=GrmTRetE+kFEaUk1sorhFQn9CXM41ShZZou7wUOJSzaj4iBXGBX1UgwkUfXFnf2I+P rRvkugn/21uICQFt1kBfDnYL26zfFzi1asC9W+Ze58ekTX0mwjrjlIVExx8sQIPp53/S V2A1jPpxrZmcSVQ0u6ZedtPiP3RZ068Fzfa60= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788511437; x=1789116237; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=KKk9MsFCuRaE3YN06XOCWIV3dU/ufhZe2dVPkS7i8qI=; b=I327mWnjLVHnFU+v9PYXJRd0DMsAQn6DzJ1P33AEwWMezrtebTe7XEtFDit8NB48QS rEt5isJ4TOeo0TNfaEnLOLv5h/1sd/Yfs32yjGKbXntF7TAwToj3VwVfq3OxTZZCzVHO cAbtidMgSP2m8pUEve6Mb7i2kF3bGToJk8osbFb9hEgrFErGgK7ShgdiqcbgNvlICfyP zgDLqjUED20JDZ3VTIME15K2eg6RFm6Cvb8TlMTyXj8GjAjODnvxzcLL67UzDAaLNrEn R8mc1hKy+TfzFsjoAj36yk9z+xMaj0X6WfjkKY5BWTAAaaW9EqaLl8PJew/ZlL4Zu5BZ wecg== X-Forwarded-Encrypted: i=1; AKwUvBwFz1XtHm5Y8SHh9V7Ncbp9p3HMURTsZo59z49F0nJAUT5CVGQpAydFx1KTCzTvyXIvETJFISYU2O88@vger.kernel.org X-Gm-Message-State: AFuF++nljYY4ZiLT9LnuEH6LQ45BICPDQMR0vIBO1iC7iLb0bpYXoqm4 SN1wCCw3IGphE6CZvXJuUMHm3z6V3JsPqFPfDCG9J7G9V4jRYXvIfEHMTAbw2y6Lfw== X-Gm-Gg: AYBFou3UtsBxx61L8R6erpyFoLCtvq3TvUVFwOqTj+wYYLJzFJojuwENprNic1Kd417 tnX+7HUhcXxDpb57L0AeYGe8wPfHzJiTUCSbCeGVCpFBtdRkitEydEffqNSiDO5ZQ6p0cS8pwIU 1pG8Ei58pTzNf5EXUJYEnlLl6cCtV79m0ynPfXOMMhjpdGagr1PWn0c56crsMdnPZ1Grj/mKkDA G47Cdj1ESYRAhffZimcNYk5GATfBRCWu4FVC/wybL1cvEmlM25m1eWARkvl+uQf7hlTzRIyQ+a4 zgBY6r//SR4n6wS6wL36m83/aC6rET24ZCy/GJc9QdrVMxd7H7S8X3QfC6Xva1ZqxRMvi/xXtBk iumlrMLlVNCzgnkyVyYjpM6b+jlBlW6nRum0CiuhVHRn0ciK8U/w94Pgyln+YKVQykUBK44gTw2 tmQamRe3BY5FzndxJcF9iOF50KiMDKiCJsHL+Z/Wkv/MVOMGtwRvEIYtWTe7Yuv6Y1dZ57vA7AW l4dHuWoB8dnRR/5tEGmHix//dW1jUxO2BUTT5EWpEBf X-Received: by 2002:a17:90a:d004:b0:398:c9be:cca8 with SMTP id 98e67ed59e1d1-39b2609f363mr7918987a91.2.1788511436740; Fri, 04 Sep 2026 01:43:56 -0700 (PDT) Received: from wenst-7875.tpe.corp.google.com ([2a00:79e0:201d:8:343:bf21:3095:9c5]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-39b260fdf9asm3343538a91.9.2026.09.04.01.43.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 04 Sep 2026 01:43:56 -0700 (PDT) From: Chen-Yu Tsai To: Bartosz Golaszewski , Greg Kroah-Hartman , Andy Shevchenko , Daniel Scally , Heikki Krogerus , Sakari Ailus , "Rafael J. Wysocki" , Danilo Krummrich , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Matthias Brugger , AngeloGioacchino Del Regno Cc: Wei Deng , Konrad Dybcio , Chen-Yu Tsai , linux-acpi@vger.kernel.org, driver-core@lists.linux.dev, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, devicetree@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Manivannan Sadhasivam , Alan Stern , Bartosz Golaszewski Subject: [PATCH v8 07/16] usb: core: Move struct usb_port and related APIs to port.h Date: Fri, 4 Sep 2026 16:41:46 +0800 Message-ID: <20260904084158.1341550-8-wenst@chromium.org> X-Mailer: git-send-email 2.55.0.979.g7e5102b832-goog In-Reply-To: <20260904084158.1341550-1-wenst@chromium.org> References: <20260904084158.1341550-1-wenst@chromium.org> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit |struct usb_port| and its matching container_of() macro should live in its own port.h, matching the split we have for .c files. Move them as described. Also move usb_port_is_power_on(), since in the next change its |struct usb_hub *| parameter will be changed to |struct usb_port *|, and becomes a non-static function that only references |struct usb_port|. port.h is only included from hub.h, as a subsequent patch will directly use fields from |struct usb_port| in a static inline helper in hub.h. The USB internal headers don't have header guards to help with this. Also drop 'extern' from the header declaration of usb_port_is_power_on(). This is not needed in modern C. Suggested-by: Andy Shevchenko Reviewed-by: Bartosz Golaszewski Reviewed-by: Andy Shevchenko Signed-off-by: Chen-Yu Tsai --- Changes since v4: - Dropped 'extern' (Andy) Changes since v3: - New patch (Andy) --- drivers/usb/core/hub.c | 16 ---------- drivers/usb/core/hub.h | 48 ++--------------------------- drivers/usb/core/port.c | 16 ++++++++++ drivers/usb/core/port.h | 68 +++++++++++++++++++++++++++++++++++++++++ 4 files changed, 86 insertions(+), 62 deletions(-) create mode 100644 drivers/usb/core/port.h diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index c19c9912c740..7f58d753d77a 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3243,22 +3243,6 @@ static bool hub_port_stop_enumerate(struct usb_hub *hub, int port1, int retries) return port_dev->ignore_event; } -/* Check if a port is power on */ -int usb_port_is_power_on(struct usb_hub *hub, unsigned int portstatus) -{ - int ret = 0; - - if (hub_is_superspeed(hub->hdev)) { - if (portstatus & USB_SS_PORT_STAT_POWER) - ret = 1; - } else { - if (portstatus & USB_PORT_STAT_POWER) - ret = 1; - } - - return ret; -} - static void usb_lock_port(struct usb_port *port_dev) __acquires(&port_dev->status_lock) { diff --git a/drivers/usb/core/hub.h b/drivers/usb/core/hub.h index 9ebc5ef54a32..de524c6da9fc 100644 --- a/drivers/usb/core/hub.h +++ b/drivers/usb/core/hub.h @@ -15,7 +15,9 @@ #include #include #include + #include "usb.h" +#include "port.h" struct usb_hub { struct device *intfdev; /* the "interface" device */ @@ -78,51 +80,6 @@ struct usb_hub { struct list_head onboard_devs; }; -/** - * struct usb port - kernel's representation of a usb port - * @child: usb device attached to the port - * @dev: generic device interface - * @port_owner: port's owner - * @peer: related usb2 and usb3 ports (share the same connector) - * @connector: USB Type-C connector - * @req: default pm qos request for hubs without port power control - * @connect_type: port's connect type - * @state: device state of the usb device attached to the port - * @state_kn: kernfs_node of the sysfs attribute that accesses @state - * @location: opaque representation of platform connector location - * @status_lock: synchronize port_event() vs usb_port_{suspend|resume} - * @portnum: port index num based one - * @is_superspeed cache super-speed status - * @usb3_lpm_u1_permit: whether USB3 U1 LPM is permitted. - * @usb3_lpm_u2_permit: whether USB3 U2 LPM is permitted. - * @early_stop: whether port initialization will be stopped earlier. - * @ignore_event: whether events of the port are ignored. - */ -struct usb_port { - struct usb_device *child; - struct device dev; - struct usb_dev_state *port_owner; - struct usb_port *peer; - struct typec_connector *connector; - struct dev_pm_qos_request *req; - enum usb_port_connect_type connect_type; - enum usb_device_state state; - struct kernfs_node *state_kn; - usb_port_location_t location; - struct mutex status_lock; - u32 over_current_count; - u8 portnum; - u32 quirks; - unsigned int early_stop:1; - unsigned int ignore_event:1; - unsigned int is_superspeed:1; - unsigned int usb3_lpm_u1_permit:1; - unsigned int usb3_lpm_u2_permit:1; -}; - -#define to_usb_port(_dev) \ - container_of(_dev, struct usb_port, dev) - extern int usb_hub_create_port_device(struct usb_hub *hub, int port1); extern void usb_hub_remove_port_device(struct usb_hub *hub, @@ -138,7 +95,6 @@ extern int usb_clear_port_feature(struct usb_device *hdev, int port1, int feature); extern int usb_hub_port_status(struct usb_hub *hub, int port1, u16 *status, u16 *change); -extern int usb_port_is_power_on(struct usb_hub *hub, unsigned int portstatus); static inline bool hub_is_port_power_switchable(struct usb_hub *hub) { diff --git a/drivers/usb/core/port.c b/drivers/usb/core/port.c index c0a51d9b06a6..b2e953f137f8 100644 --- a/drivers/usb/core/port.c +++ b/drivers/usb/core/port.c @@ -22,6 +22,22 @@ static int usb_port_block_power_off; static const struct attribute_group *port_dev_group[]; +/* Check if a port is power on */ +int usb_port_is_power_on(struct usb_hub *hub, unsigned int portstatus) +{ + int ret = 0; + + if (hub_is_superspeed(hub->hdev)) { + if (portstatus & USB_SS_PORT_STAT_POWER) + ret = 1; + } else { + if (portstatus & USB_PORT_STAT_POWER) + ret = 1; + } + + return ret; +} + static bool usb_port_allow_power_off(struct usb_device *hdev, struct usb_hub *hub, struct usb_port *port_dev) diff --git a/drivers/usb/core/port.h b/drivers/usb/core/port.h new file mode 100644 index 000000000000..00f7500af336 --- /dev/null +++ b/drivers/usb/core/port.h @@ -0,0 +1,68 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * usb hub driver head file + * + * Copyright (C) 1999 Linus Torvalds + * Copyright (C) 1999 Johannes Erdfelt + * Copyright (C) 1999 Gregory P. Smith + * Copyright (C) 2001 Brad Hards (bhards@bigpond.net.au) + * Copyright (C) 2012 Intel Corp (tianyu.lan@intel.com) + * + * move struct usb_port to this file. + */ + +#include +#include +#include +#include + +#include + +/** + * struct usb port - kernel's representation of a usb port + * @child: usb device attached to the port + * @dev: generic device interface + * @port_owner: port's owner + * @peer: related usb2 and usb3 ports (share the same connector) + * @connector: USB Type-C connector + * @req: default pm qos request for hubs without port power control + * @connect_type: port's connect type + * @state: device state of the usb device attached to the port + * @state_kn: kernfs_node of the sysfs attribute that accesses @state + * @location: opaque representation of platform connector location + * @status_lock: synchronize port_event() vs usb_port_{suspend|resume} + * @portnum: port index num based one + * @is_superspeed cache super-speed status + * @usb3_lpm_u1_permit: whether USB3 U1 LPM is permitted. + * @usb3_lpm_u2_permit: whether USB3 U2 LPM is permitted. + * @early_stop: whether port initialization will be stopped earlier. + * @ignore_event: whether events of the port are ignored. + */ +struct usb_port { + struct usb_device *child; + struct device dev; + struct usb_dev_state *port_owner; + struct usb_port *peer; + struct typec_connector *connector; + struct dev_pm_qos_request *req; + enum usb_port_connect_type connect_type; + enum usb_device_state state; + struct kernfs_node *state_kn; + usb_port_location_t location; + struct mutex status_lock; + u32 over_current_count; + u8 portnum; + u32 quirks; + unsigned int early_stop:1; + unsigned int ignore_event:1; + unsigned int is_superspeed:1; + unsigned int usb3_lpm_u1_permit:1; + unsigned int usb3_lpm_u2_permit:1; +}; + +#define to_usb_port(_dev) \ + container_of(_dev, struct usb_port, dev) + +struct usb_hub; + +int usb_port_is_power_on(struct usb_hub *hub, unsigned int portstatus); -- 2.55.0.979.g7e5102b832-goog