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 98B0247C11A; Sat, 12 Sep 2026 13:37:18 +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=1789220239; cv=none; b=Bkuv54fmnbb5ECrAEUHmXpUSb7RrFdS+ysAluJU1DzyxQmsqbD81Vc+/XaU5DYPEkM4fjHAe42i+Y2FFq6ZN6GKjDnWPvOdxRbUHfzfCPykgtKQV0yRyCJxm/EMHWMhHPlAoOni3/qslUuWi/pTnp5ksh1maW5GmXn0pRhfaKfE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789220239; c=relaxed/simple; bh=P/zxiUEN+njIU4saEFBFn1uGqa/TW8buOfKoNcXnZQM=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=d0tcNW/3McUdYa5LuQHvM2qQzZZ5n5xW2q/KtwXQVzIHBIip0mTAlEjdYV8Rv6RKLZhY0qiLwXbLjZrVMva0dgTq7sYVEO5jqmaJQ/MvZifYhqLl8LIz6Cpfsw1JoMxCvGuKQIIAuw5iQnD+p6kVEpbBSz3xtHFl9sVofriaU48= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=yVLRgivS; 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="yVLRgivS" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 026C01F000FF; Sat, 12 Sep 2026 13:37:16 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789220238; bh=yqZq3rRb7QHohW6AeRMVXDI/bvQzDz6M4ApcErsr+i8=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=yVLRgivSH3IdOhym0OTYHUFSUxznDeCrAKx7IGUsFWk2NNuNAeiiK4WcEWpMMyojy gP78KAcdZRc3YeUYX5zcAAEmRo+BJjBFxD7ZqofQZcz0htaulDHUHFZyOHzmhLgz2H V/xUSueSNTPIpIf/3Fo3Q5eXky4abLmoT9+IqLm4= 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 6.6 0136/1424] Bluetooth: hci_intel: fix usage_count leak when autosuspend_delay is negative Date: Sat, 12 Sep 2026 08:42:48 +0200 Message-ID: <20260912065610.345247827@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065607.279695368@linuxfoundation.org> References: <20260912065607.279695368@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 6.6-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); } }