From nobody Sat Jun 13 06:23:43 2026 Received: from cstnet.cn (smtp81.cstnet.cn [159.226.251.81]) (using TLSv1.2 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 2D6DD382365; Sat, 9 May 2026 09:27:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.226.251.81 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778318852; cv=none; b=mwcDxoPoN2Xm66YUJkVnjbVCwPXGBlY9eDAAJjBHx2WURj5nNb2ayaWqnK0UDKp7a9kYBVNEWFkUbCm96+zkEsvvlo5JEF+B+m/5dpGqsQ62e2qHGX0U36n+F9Y4QgLu7ZXhISXEeCPv1DgWOidC85ivv9T+ZCvINDmGmiWrvsg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778318852; c=relaxed/simple; bh=8tfSMCNSxrzmA7fK4BAtFJcw4hhOwP0+zl00SMQFpCk=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=Y2fM2ux2LZSxv7lF9NcoXpElhJPAWv+D9rem3SNAzWOkhFqnu0J6umvVXokh+rPiF6truBR7fgYYDDfJCPEZqNAgjDeraqzlClZa+OOMySRYrO5bPnNnI03gTZQFg89OZjY3MH5e1MiClw9/RuljtyobsOXCHgU0tr7k3iOp9uA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=mails.ucas.ac.cn; spf=pass smtp.mailfrom=mails.ucas.ac.cn; arc=none smtp.client-ip=159.226.251.81 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=mails.ucas.ac.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=mails.ucas.ac.cn Received: from fric.. (unknown [36.110.52.2]) by APP-03 (Coremail) with SMTP id rQCowAAnC+Lt_f5pX4x7EA--.10838S2; Sat, 09 May 2026 17:27:09 +0800 (CST) From: Jiakai Xu To: driver-core@lists.linux.dev, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org Cc: "Rafael J . Wysocki" , Colin Cross , Danilo Krummrich , Greg Kroah-Hartman , Len Brown , Pavel Machek , Jiakai Xu Subject: [PATCH] PM: sleep: Use complete() instead of complete_all() in device_pm_sleep_init() Date: Sat, 9 May 2026 09:27:07 +0000 Message-Id: <20260509092707.3426533-1-xujiakai24@mails.ucas.ac.cn> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: rQCowAAnC+Lt_f5pX4x7EA--.10838S2 X-Coremail-Antispam: 1UD129KBjvJXoW7uw4kGry5JrW3XrW5Ary5Arb_yoW8WryUp3 4xK3yFgw1j9r4vy3Wqq3W8XF15Was3Cr97CryrCw15CwsxWrZ0yFy5tFZ8Jr4DZ3yDtasa qF15Ja1rGrnF9r7anT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUBY14x267AKxVW8JVW5JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26ryj6F1UM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4j 6F4UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s 0DM2vYz4IE04k24VAvwVAKI4IrM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI 64kE6c02F40Ex7xfMcIj6xIIjxv20xvE14v26r106r15McIj6I8E87Iv67AKxVW8JVWxJw Am72CE4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAG YxC7M4IIrI8v6xkF7I0E8cxan2IY04v7MxkF7I0En4kS14v26r1q6r43MxAIw28IcxkI7V AKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCj r7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6x IIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x0267AKxVWUJVW8JwCI42IY6xAI w20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr0_Gr1lIxAIcVC2z280aVCY1x 0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7VUbknY7UUUUU== X-CM-SenderInfo: 50xmxthndljko6pdxz3voxutnvoduhdfq/ Content-Type: text/plain; charset="utf-8" device_pm_sleep_init() is called during device initialization via device_initialize(), where no threads can be waiting on dev->power.completion. Using complete_all() here triggers a false-positive WARNING from lockdep_assert_RT_in_threaded_ctx() when CONFIG_PROVE_RAW_LOCK_NESTING is enabled, because holding a raw_spinlock elsewhere in the call chain makes lockdep_hardirq_context() appear non-zero. Replace complete_all() with complete(), which is semantically equivalent when no waiters exist (sets done to 1 instead of UINT_MAX). The completion is always reinitialized via reinit_completion() in dpm_clear_async_state() before each suspend/resume phase, so this initialization value has no effect on later suspend operations. Signed-off-by: Jiakai Xu Fixes: 152e1d592071c ("PM: Prevent waiting forever on asynchronous resume a= fter failing suspend") --- drivers/base/power/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/base/power/main.c b/drivers/base/power/main.c index e1b550664bab..7a948dd134df 100644 --- a/drivers/base/power/main.c +++ b/drivers/base/power/main.c @@ -115,7 +115,7 @@ void device_pm_sleep_init(struct device *dev) dev->power.is_noirq_suspended =3D false; dev->power.is_late_suspended =3D false; init_completion(&dev->power.completion); - complete_all(&dev->power.completion); + complete(&dev->power.completion); dev->power.wakeup =3D NULL; INIT_LIST_HEAD(&dev->power.entry); } --=20 2.34.1