From patchwork Thu Nov 12 13:35:33 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zhang Qilong X-Patchwork-Id: 1398983 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=huawei.com Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 4CX2ZQ07pmz9sWN for ; Fri, 13 Nov 2020 00:31:58 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727822AbgKLNb5 (ORCPT ); Thu, 12 Nov 2020 08:31:57 -0500 Received: from szxga04-in.huawei.com ([45.249.212.190]:7219 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727646AbgKLNb4 (ORCPT ); Thu, 12 Nov 2020 08:31:56 -0500 Received: from DGGEMS406-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4CX2Z501t4zkjk8; Thu, 12 Nov 2020 21:31:41 +0800 (CST) Received: from huawei.com (10.175.127.227) by DGGEMS406-HUB.china.huawei.com (10.3.19.206) with Microsoft SMTP Server id 14.3.487.0; Thu, 12 Nov 2020 21:31:48 +0800 From: Zhang Qilong To: , , , CC: , Subject: [PATCH] usb: gadget: tegra-xudc: Fix PM disable depth imbalance on error path Date: Thu, 12 Nov 2020 21:35:33 +0800 Message-ID: <20201112133533.1793971-1-zhangqilong3@huawei.com> X-Mailer: git-send-email 2.25.4 MIME-Version: 1.0 X-Originating-IP: [10.175.127.227] X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org The pm_runtime_enable will increase power disable depth. Imbalance depth will resulted in enabling runtime PM of device fails later. Thus a pairing decrement must be needed on the error handling path to keep it balanced. Fixes: 49db427232fe2 ("usb: gadget: Add UDC driver for tegra XUSB device mode controller") Signed-off-by: Zhang Qilong --- drivers/usb/gadget/udc/tegra-xudc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/usb/gadget/udc/tegra-xudc.c b/drivers/usb/gadget/udc/tegra-xudc.c index 580bef8eb4cb..ad205e178033 100644 --- a/drivers/usb/gadget/udc/tegra-xudc.c +++ b/drivers/usb/gadget/udc/tegra-xudc.c @@ -3861,6 +3861,7 @@ static int tegra_xudc_probe(struct platform_device *pdev) return 0; free_eps: + pm_runtime_disable(&pdev->dev); tegra_xudc_free_eps(xudc); free_event_ring: tegra_xudc_free_event_ring(xudc);