From patchwork Wed Sep 12 08:50:57 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guido Kiener X-Patchwork-Id: 10596965 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id E18EB15E2 for ; Wed, 12 Sep 2018 08:00:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id D55DE297DF for ; Wed, 12 Sep 2018 08:00:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C987C29930; Wed, 12 Sep 2018 08:00:44 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 702472992C for ; Wed, 12 Sep 2018 08:00:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727774AbeILNEA (ORCPT ); Wed, 12 Sep 2018 09:04:00 -0400 Received: from mr02.mx01.tldhost.de ([62.108.41.231]:48053 "EHLO mr02.mx01.tldhost.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727721AbeILND7 (ORCPT ); Wed, 12 Sep 2018 09:03:59 -0400 Received: from mx01.tldhost.de (localhost [127.0.0.1]) by mx01.tldhost.de (Postfix) with ESMTP id 8FB8F120F84 for ; Wed, 12 Sep 2018 09:54:38 +0200 (CEST) Received: by mx01.tldhost.de (Postfix, from userid 1001) id 83D7F120F5D; Wed, 12 Sep 2018 09:54:38 +0200 (CEST) Received: from server12.tldhost.de (server12.tldhost.de [84.19.26.112]) by mx01.tldhost.de (Postfix) with ESMTPS id 765D7120F3B; Wed, 12 Sep 2018 09:54:36 +0200 (CEST) From: Guido Kiener To: gregkh@linuxfoundation.org, linux-usb@vger.kernel.org, guido.kiener@rohde-schwarz.com, pankaj.adhikari@ni.com, steve_bayless@keysight.com, dpenkler@gmail.com Cc: Guido Kiener Subject: [PATCH v6 07/22] usb: usbtmc: Fix suspend/resume Date: Wed, 12 Sep 2018 10:50:57 +0200 Message-Id: <20180912085112.4891-8-guido@kiener-muenchen.de> In-Reply-To: <20180912085112.4891-1-guido@kiener-muenchen.de> References: <20180912085112.4891-1-guido@kiener-muenchen.de> X-PPP-Message-ID: <20180912075436.4701.70952@server12.tldhost.de> X-PPP-Vhost: kiener-muenchen.de X-POWERED-BY: TLDHost.de - AV:CLEAN SPAM:OK Sender: linux-usb-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Submitted urbs are not allowed when system is suspended. Thus the submitted urb waiting at interrupt pipe is killed during suspend callback and submitted again when system resumes. Signed-off-by: Guido Kiener Reviewed-by: Steve Bayless --- drivers/usb/class/usbtmc.c | 16 +++++++++++++++- 1 file changed, 15 insertions(+), 1 deletion(-) diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index dc6c04fdfdff..e4c80b44b55a 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -2306,7 +2306,9 @@ static void usbtmc_free_int(struct usbtmc_device_data *data) return; usb_kill_urb(data->iin_urb); kfree(data->iin_buffer); + data->iin_buffer = NULL; usb_free_urb(data->iin_urb); + data->iin_urb = NULL; kref_put(&data->kref, usbtmc_delete); } @@ -2488,13 +2490,25 @@ static int usbtmc_suspend(struct usb_interface *intf, pm_message_t message) file_elem); usbtmc_draw_down(file_data); } + + if (data->iin_ep_present && data->iin_urb) + usb_kill_urb(data->iin_urb); + mutex_unlock(&data->io_mutex); return 0; } static int usbtmc_resume(struct usb_interface *intf) { - return 0; + struct usbtmc_device_data *data = usb_get_intfdata(intf); + int retcode = 0; + + if (data->iin_ep_present && data->iin_urb) + retcode = usb_submit_urb(data->iin_urb, GFP_KERNEL); + if (retcode) + dev_err(&intf->dev, "Failed to submit iin_urb\n"); + + return retcode; } static int usbtmc_pre_reset(struct usb_interface *intf)