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 594AE3B7B7B; Fri, 4 Sep 2026 05:20:39 +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=1788499240; cv=none; b=Nt7FpGESlA93bGAH5AHBRbarrkw2AUss2F55reKD5yNJYACVS6WK9UQw3VQC6bnLZ8D+Bh5aGri0aR+6gzRKNHDiKOjLnBcaB5IAXVvC0ycMYkkpb6eUCtdtadnb3TlLu37WdLJqgklYAR0TaDKQqmrJ65QBkD5gfniZu/pYES0= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788499240; c=relaxed/simple; bh=T4MDIt8flH+Glp3RjRlMiEmWiVIcpM6BqgfCpyRHilw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=HV2VztvtNXIH+a0hZrxTxWi3Zt4pghLFG2f5MSparKI/h06FiBkBEfrUmr2+BD7O0zzbjF2ElHJboUb3EZYQTmW6U+eSyQGyECymP6mFk2iAF0vFrlfUGytrth1RVMUaiBY0r1FuQLu61yHXGQyJhzRXOojVpnFaEBv6r6jHbmg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=HP0BVkp3; 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="HP0BVkp3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A92901F00ACA; Fri, 4 Sep 2026 05:20:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linuxfoundation.org; s=korg; t=1788499239; bh=Kx9p5Mf0ajDR20peXQRTyA1xVJjC1fZXE3apLEUOQiE=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=HP0BVkp3UkSXMejhRbiENXgJLs/rDsmum349HGsfFwIgD+/RrFukQfKEMiBd72Y3v JidrBFTR7VZcyKRYbH/1eKiYeC3hK6112QBjHUjgMunlUhXNAPhMr1O4eO7uKK7uMR zKAqskUtKrpto7SRbM2QPa1t8UgA3d2+1W4ZrvqM= 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 7.2 346/713] Bluetooth: hci_intel: fix usage_count leak when autosuspend_delay is negative Date: Fri, 4 Sep 2026 06:55:14 +0200 Message-ID: <20260904045811.585816851@linuxfoundation.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260904045803.810145556@linuxfoundation.org> References: <20260904045803.810145556@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 7.2-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 @@ -345,6 +345,7 @@ 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); } }