From patchwork Wed Sep 12 08:51:05 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guido Kiener X-Patchwork-Id: 10596975 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 3D15F15E2 for ; Wed, 12 Sep 2018 08:00:51 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2CED8297DF for ; Wed, 12 Sep 2018 08:00:51 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 20987297EC; Wed, 12 Sep 2018 08:00:51 +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 B8101297DF for ; Wed, 12 Sep 2018 08:00:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727676AbeILND6 (ORCPT ); Wed, 12 Sep 2018 09:03:58 -0400 Received: from mr02.mx01.tldhost.de ([62.108.41.231]:58540 "EHLO mr02.mx01.tldhost.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727651AbeILND6 (ORCPT ); Wed, 12 Sep 2018 09:03:58 -0400 Received: from mx01.tldhost.de (localhost [127.0.0.1]) by mx01.tldhost.de (Postfix) with ESMTP id B40DE120F68 for ; Wed, 12 Sep 2018 09:54:43 +0200 (CEST) Received: by mx01.tldhost.de (Postfix, from userid 1001) id A363E120F5F; Wed, 12 Sep 2018 09:54:43 +0200 (CEST) Received: from server12.tldhost.de (server12.tldhost.de [84.19.26.112]) by mx01.tldhost.de (Postfix) with ESMTPS id 90ACA120F57; Wed, 12 Sep 2018 09:54:41 +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 15/22] usb: usbtmc: Fix ioctl USBTMC_IOCTL_ABORT_BULK_OUT Date: Wed, 12 Sep 2018 10:51:05 +0200 Message-Id: <20180912085112.4891-16-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: <20180912075441.4837.14049@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 Add parameter 'tag' to function usbtmc_ioctl_abort_bulk_out_tag() for future versions. Use USBTMC_BUFSIZE (4k) instead of USBTMC_SIZE_IOBUFFER (2k). Using USBTMC_SIZE_IOBUFFER is deprecated. Insert a sleep of 50 ms between subsequent CHECK_ABORT_BULK_OUT_STATUS control requests to avoid stressing the instrument with repeated requests. Use common macro USB_CTRL_GET_TIMEOUT instead of USBTMC_TIMEOUT. Signed-off-by: Guido Kiener Reviewed-by: Steve Bayless --- drivers/usb/class/usbtmc.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/usb/class/usbtmc.c b/drivers/usb/class/usbtmc.c index 0b05aaa0247c..329daa7425dc 100644 --- a/drivers/usb/class/usbtmc.c +++ b/drivers/usb/class/usbtmc.c @@ -398,7 +398,8 @@ static int usbtmc_ioctl_abort_bulk_in(struct usbtmc_device_data *data) return usbtmc_ioctl_abort_bulk_in_tag(data, data->bTag_last_read); } -static int usbtmc_ioctl_abort_bulk_out(struct usbtmc_device_data *data) +static int usbtmc_ioctl_abort_bulk_out_tag(struct usbtmc_device_data *data, + u8 tag) { struct device *dev; u8 *buffer; @@ -415,8 +416,8 @@ static int usbtmc_ioctl_abort_bulk_out(struct usbtmc_device_data *data) usb_rcvctrlpipe(data->usb_dev, 0), USBTMC_REQUEST_INITIATE_ABORT_BULK_OUT, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_ENDPOINT, - data->bTag_last_write, data->bulk_out, - buffer, 2, USBTMC_TIMEOUT); + tag, data->bulk_out, + buffer, 2, USB_CTRL_GET_TIMEOUT); if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); @@ -435,12 +436,14 @@ static int usbtmc_ioctl_abort_bulk_out(struct usbtmc_device_data *data) n = 0; usbtmc_abort_bulk_out_check_status: + /* do not stress device with subsequent requests */ + msleep(50); rv = usb_control_msg(data->usb_dev, usb_rcvctrlpipe(data->usb_dev, 0), USBTMC_REQUEST_CHECK_ABORT_BULK_OUT_STATUS, USB_DIR_IN | USB_TYPE_CLASS | USB_RECIP_ENDPOINT, 0, data->bulk_out, buffer, 0x08, - USBTMC_TIMEOUT); + USB_CTRL_GET_TIMEOUT); n++; if (rv < 0) { dev_err(dev, "usb_control_msg returned %d\n", rv); @@ -474,6 +477,11 @@ static int usbtmc_ioctl_abort_bulk_out(struct usbtmc_device_data *data) return rv; } +static int usbtmc_ioctl_abort_bulk_out(struct usbtmc_device_data *data) +{ + return usbtmc_ioctl_abort_bulk_out_tag(data, data->bTag_last_write); +} + static int usbtmc488_ioctl_read_stb(struct usbtmc_file_data *file_data, void __user *arg) {