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 EAF80344DBD; Sat, 12 Sep 2026 17:07:46 +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=1789232868; cv=none; b=Q2DdI8RqRyehjvDVW2ATVuDaLBCnRJpOh2w9HeK8DN0aYiT2O6S5O8wX4/C2B/jVwBn5eEKc5LN8xp/dIpe4cseVshNfhvqJoK7/Sabi9qKsJRmsSkIcjQw6zPjsvJaFbmj9rT8a2R+h6Dx65JCFHu9syOj9pvOX3KP/APL1Fbs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789232868; c=relaxed/simple; bh=M/0u4iDDdV6EVYn4E7FV4W0d7KACgzvPbJEf2DaIps4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=m5P9r+Bsx/C3xJzXx8cnN7x5pfsRnpsMw0GD91ZuKt8bw3grRZpwTGOmd8wGeouI190dQDb6ojAjtJI875aQmf4gy7+rv0/BjepIuoaCZJ2TRTOF03YBqNixJcSmg0GKyxbRBspug+shNlZADBAhk7YjMAx18mnDVe5xUJPofmk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=lanvwXey; 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="lanvwXey" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D23171F000FF; Sat, 12 Sep 2026 17:07:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1789232866; bh=47fpvS0oPm9xAltAIIiiJwFMm+jvBrZgRErK7kFP92Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=lanvwXeymwJUXPIxLqyscihJQKwGyoo4d3JSI2d4n5fUg8fJoor7DwtmYOns31S+t uYnTPDKuxw5bQbQZY3W1aELvK50FBTD+f90FVsPqQ1pwWaJae89/T9W3IZ0diM/Xks PMVMQAzJLGJl344GdazGoxM3Py1przKJaAyVtlRY= 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 5.15 098/935] Bluetooth: hci_intel: fix usage_count leak when autosuspend_delay is negative Date: Sat, 12 Sep 2026 08:52:08 +0200 Message-ID: <20260912065529.070432781@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260912065526.833703348@linuxfoundation.org> References: <20260912065526.833703348@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 5.15-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); } }