From patchwork Wed Dec 18 04:09:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Joe Hattori X-Patchwork-Id: 13913006 Received: from mail-pf1-f180.google.com (mail-pf1-f180.google.com [209.85.210.180]) (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 2515F12D758 for ; Wed, 18 Dec 2024 04:09:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.180 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734494986; cv=none; b=SMBz2MmkuTL+H3FnL9KFPXnFz+Vdg3nNi6xf+srO4GDQpXKd3//XmduIrZmST2p+HVea/JOVSdpDFVRtoDlPvMtwPKjLYBcLyiwJE48CG0P6gwYhgDVcsmkgu31cQ+Z+HRGLIeVFPZf0FchdwMeT7Wg4oc5bYuVaQ8O2bH8tNDM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1734494986; c=relaxed/simple; bh=SHzlLPjzv79b1rLvZeZjQjkoAP+VlgoofWlmKzX9cVY=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=aQ8iJ3k9RtaBt93ZPmYnRnmkW45UJip5y0YnY/ipSaOOwDTQSdVATngTYb2UxuC1S5jCD30uUUX8F5yEAp63mho/lvQqTr2ktvjLFTUVBsVDtjOq198MAaUMD49KnsWvteN4HAd0iIEKeWqaVoVMkxDYxkKby9KWhDqtz+j4Cdc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=pf.is.s.u-tokyo.ac.jp; spf=none smtp.mailfrom=pf.is.s.u-tokyo.ac.jp; dkim=pass (2048-bit key) header.d=pf-is-s-u-tokyo-ac-jp.20230601.gappssmtp.com header.i=@pf-is-s-u-tokyo-ac-jp.20230601.gappssmtp.com header.b=E/UpVdPK; arc=none smtp.client-ip=209.85.210.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=pf.is.s.u-tokyo.ac.jp Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=pf.is.s.u-tokyo.ac.jp Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=pf-is-s-u-tokyo-ac-jp.20230601.gappssmtp.com header.i=@pf-is-s-u-tokyo-ac-jp.20230601.gappssmtp.com header.b="E/UpVdPK" Received: by mail-pf1-f180.google.com with SMTP id d2e1a72fcca58-72739105e02so6565055b3a.0 for ; Tue, 17 Dec 2024 20:09:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=pf-is-s-u-tokyo-ac-jp.20230601.gappssmtp.com; s=20230601; t=1734494983; x=1735099783; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=g41ch1E9u/0fjD91ZUIEWG0XH7IIW2wFxAqbnpEBwYA=; b=E/UpVdPKNS6gWBf74+wLv1CmrdeZjRCtuPOtA0xIuEwFmTdyQtv4Bq6WwUoS2BB1l9 S2G9dNYl+mb5mjQoGdQZUE5Z+sFDy0ID/PaFlBnQdoeklrCg0WRK23SAy9rThM2OreKk Z5Abjj5vybh7y3PXSxEW11J34seUx92i8VhLr5y1+OS4Be+/rc2TC1QUgz3Nsv3f7ZGK WVDvGYsWOk1JM2YYpLAlALcQ9RmXf8uJfxUSCc5t+ZMGL7eZ8djhm8a1oiGD0E5KMerU l6tGl1T7SEq+Uvh2A7hrPkkelCV/Bivn0FzPkoNErFq/v/jZBfT6o+BCovJHbWITrvx8 zhGg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734494983; x=1735099783; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=g41ch1E9u/0fjD91ZUIEWG0XH7IIW2wFxAqbnpEBwYA=; b=asbeyzXiQlf4q2qFxst/xfrv7mPq+kXIA1iMOGlz7cYXD4/Us3oxvmy7FO2ymKgSxZ OlouIeWduVWm8mkSBeaA5SQhw3EzMxTewWaw6NVxB8o+77RK7fEWrR2mUdTOIllrN5UP jBJRv8/HrkY1rzBdFrypncN4Vw8n38wjZRCnxslPDRXSInwbYvnxbl4iNOhlw1nLDXFR z7KSoPDIFZmJglnJmkJeETVxMwhXPhu7P6UT77KqsPHURCBt950VJ4JlVqOVfdiMQVKh 3UnyOB6XlGrkN9u6qoh2+8Z77jm29i8CuPrSiFz3ftIn0GPhitHqa5L4midxBc0ltgMa 2XbQ== X-Forwarded-Encrypted: i=1; AJvYcCVMwYINaTk/MgOfMZB7CnOt1hvJuWmD/8RKV33ZgFbTkN4AoRwjRTSd3ec/9Gfrk88fE9sIwwveZQ==@vger.kernel.org X-Gm-Message-State: AOJu0YyYihudxvO+GaqpzDelk34mAeIattbnnOOyVqKSTH+3oIT3+LC9 /XVODiddEtrV933PLuhMWQnYSPwxmXMQjs6D4YHzDEissW9CKFyRtnbXGS02dkpGonkmSTflqsu N0ltLxQ== X-Gm-Gg: ASbGncsiWR7pWp2jP1iME6xZ9jliy5Qvkx7Hnwv9M26KiPGBV25d7i5E2pS60G5VbLI D95oqSqM5QtGipTK5FToJVfVOZ9RLFdBScVT05rnNgcf8w2Q8rHVXm2CsAp0lMRW1EaU5AZS3P/ 41+/Dm5rpS7Q3hhF0jhm//SCLCnOZDWEABxw7iVC6nC1oYDtdSs/TludDc8gfaRe0d/af/IqoUx y1p34Pm9ogoEDtWwS5JIh0Owr0rOgfKYkJOtSZmrkdHkDW2EhtjlhLqSmKMR5iYnsdcMDf5dJl3 Ojc= X-Google-Smtp-Source: AGHT+IE/iTTmfsPTwobhuJOWiRzrT1Q0VITqzU1GwKMNDyBaMNrQ6rPCx8Oyvh3z9QZwyMP9m+4JZw== X-Received: by 2002:a05:6a21:3989:b0:1e1:ae4a:1d4b with SMTP id adf61e73a8af0-1e5b4889115mr3098103637.34.1734494983301; Tue, 17 Dec 2024 20:09:43 -0800 (PST) Received: from localhost.localdomain ([2001:f70:39c0:3a00:933f:d83:186f:7181]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-72918b78eb7sm7783126b3a.107.2024.12.17.20.09.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Dec 2024 20:09:42 -0800 (PST) From: Joe Hattori To: rafael@kernel.org Cc: d-gole@ti.com, linux-pm@vger.kernel.org, Joe Hattori , Alexandre Belloni Subject: [PATCH v3] PM: wakeup: implement devm_device_init_wakeup() helper Date: Wed, 18 Dec 2024 13:09:35 +0900 Message-Id: <20241218040935.1921416-1-joe@pf.is.s.u-tokyo.ac.jp> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Some drivers that enable device wakeup fail to properly disable it during their cleanup, which results in a memory leak. To address this, introduce devm_device_init_wakeup(), a managed variant of device_init_wakeup(dev, true). With this managed helper, wakeup functionality will be automatically disabled when the device is released, ensuring a more reliable cleanup process. This need for this addition arose during a previous discussion [1]. [1]: https://lore.kernel.org/linux-rtc/20241212100403.3799667-1-joe@pf.is.s.u-tokyo.ac.jp/ Suggested-by: Alexandre Belloni Signed-off-by: Joe Hattori --- Changes in v3: - Disregard the return value of device_init_wakeup(). Changes in v2: - Utilize the device_init_wakeup() function. --- include/linux/pm_wakeup.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/include/linux/pm_wakeup.h b/include/linux/pm_wakeup.h index 222f7530806c..d501c09c60cd 100644 --- a/include/linux/pm_wakeup.h +++ b/include/linux/pm_wakeup.h @@ -240,4 +240,21 @@ static inline int device_init_wakeup(struct device *dev, bool enable) return 0; } +static void device_disable_wakeup(void *dev) +{ + device_init_wakeup(dev, false); +} + +/** + * devm_device_init_wakeup - Resource managed device wakeup initialization. + * @dev: Device to handle. + * + * This function is the devm managed version of device_init_wakeup(dev, true). + */ +static inline int devm_device_init_wakeup(struct device *dev) +{ + device_init_wakeup(dev, true); + return devm_add_action_or_reset(dev, device_disable_wakeup, dev); +} + #endif /* _LINUX_PM_WAKEUP_H */