From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 7548778C9C; Sat, 12 Sep 2026 19:26:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789241206; cv=none; b=kle5F+1hDwVeXWVpncReioIeRlVsgbgHlKDDm8TLVeBOmJpjLg0DCq3KU/AnfqC1Gx6PnGds4kbnZTfGZWgCXsqcodhKrtXFqRl/MxX3+smtP2nAEmAfuhXXu/Ugz8YH+weJpcszYqRvAZ4QzQ4rTJ9X0e0SJ9lFnx+lWSFDycc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789241206; c=relaxed/simple; bh=elw0lAlA+lIAq/RRfd2Wgb0wiZt4TMp/72u4D1PsjuU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=IuPqSC2eNViCyhPmL5tjZfj8nLbaUyw3tsyW395ghdedb5n58bYA+TXqu9hseKETVzSdv69HS6Cjt4swbFvj7b4LsONXHUkEjIDWqA/Qwl85Xb5cAvM8hAo/WZdh9O/JopCFKM+i3rIDttgVWNWtlk+GZwlLl0KU3532Zw+hcfs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=b2VqMr0i; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="b2VqMr0i" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3BFC51F000FF; Sat, 12 Sep 2026 19:26:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789241205; bh=gVrMaau+lBSqF+49+/n37T0gjZF2V5nngNDq5IFJkW8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=b2VqMr0iN/Ov1bImdv/I/UDuyO9WOpYvdwxJYeBqUaOYfrD38jivteNu5LpiE4cmE WbY9tw4nRSj+0FqkVBmonuvXVjbJWLAI4GhaVXjyoTxEgKs5neNqpg2I8IUOMvHUjr GWjAwT8ITY8d6X7iKV0H8etu4vzWZ6Fhj0D/prKY= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Guangshuo Li , Luiz Augusto von Dentz Subject: [PATCH 5.10 087/798] Bluetooth: hci_intel: fix usage_count leak when autosuspend_delay is negative Date: Sat, 12 Sep 2026 08:55:15 +0200 Message-ID: <20260912065518.952617715@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065516.948645775@linuxfoundation.org> References: <20260912065516.948645775@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.10-stable review patch. If anyone has any objections, please let me know. ------------------ From: Guangshuo Li commit c7e9a8cb6918656884a0757c92465075c7555ffa upstream. intel_set_power() calls pm_runtime_use_autosuspend() when powering on the device, but the power-off path does not call the matching pm_runtime_dont_use_autosuspend() before disabling runtime PM. If the autosuspend delay is set to a negative value while autosuspend is enabled, the runtime PM core increments usage_count to prevent runtime suspend. Without calling pm_runtime_dont_use_autosuspend() during teardown, this reference is not dropped and usage_count remains unbalanced. Add the missing pm_runtime_dont_use_autosuspend() call before disabling runtime PM. This issue was found by manual code inspection. Fixes: 74cdad37cd24 ("Bluetooth: hci_intel: Add runtime PM support") Cc: stable@vger.kernel.org Signed-off-by: Guangshuo Li Signed-off-by: Luiz Augusto von Dentz Signed-off-by: Greg Kroah-Hartman --- drivers/bluetooth/hci_intel.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/bluetooth/hci_intel.c +++ b/drivers/bluetooth/hci_intel.c @@ -348,6 +348,7 @@ static int intel_set_power(struct hci_ua devm_free_irq(&idev->pdev->dev, idev->irq, idev); device_wakeup_disable(&idev->pdev->dev); + pm_runtime_dont_use_autosuspend(&idev->pdev->dev); pm_runtime_disable(&idev->pdev->dev); } }