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Lack of this functionality causes that in some cases uac2 queue the same request multiple time. Such situation can occur when host send set interface with alternate setting 1 twice. Signed-off-by: Pawel Laszczak --- drivers/usb/gadget/function/f_uac2.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/usb/gadget/function/f_uac2.c b/drivers/usb/gadget/function/f_uac2.c index 9cc5c512a5cd..7d20a9d8a1b4 100644 --- a/drivers/usb/gadget/function/f_uac2.c +++ b/drivers/usb/gadget/function/f_uac2.c @@ -890,17 +890,17 @@ afunc_set_alt(struct usb_function *fn, unsigned intf, unsigned alt) if (intf == uac2->as_out_intf) { uac2->as_out_alt = alt; + u_audio_stop_capture(&uac2->g_audio); + if (alt) ret = u_audio_start_capture(&uac2->g_audio); - else - u_audio_stop_capture(&uac2->g_audio); } else if (intf == uac2->as_in_intf) { uac2->as_in_alt = alt; + u_audio_stop_playback(&uac2->g_audio); + if (alt) ret = u_audio_start_playback(&uac2->g_audio); - else - u_audio_stop_playback(&uac2->g_audio); } else { dev_err(dev, "%s:%d Error!\n", __func__, __LINE__); return -EINVAL; From patchwork Mon Apr 19 07:53:11 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pawel Laszczak X-Patchwork-Id: 12211043 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1CDF4C433ED for ; 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Mon, 19 Apr 2021 09:53:33 +0200 Received: from gli-login.cadence.com (10.187.128.100) by maileu3.global.cadence.com (10.160.88.99) with Microsoft SMTP Server (TLS) id 15.0.1497.2 via Frontend Transport; Mon, 19 Apr 2021 09:53:32 +0200 Received: from gli-login.cadence.com (localhost [127.0.0.1]) by gli-login.cadence.com (8.14.4/8.14.4) with ESMTP id 13J7rWNF035370; Mon, 19 Apr 2021 09:53:32 +0200 Received: (from pawell@localhost) by gli-login.cadence.com (8.14.4/8.14.4/Submit) id 13J7rWBQ035324; Mon, 19 Apr 2021 09:53:32 +0200 From: Pawel Laszczak To: CC: , , , , Pawel Laszczak Subject: [PATCH 2/2] usb: cdnsp: Fix lack of removing request from pending list. Date: Mon, 19 Apr 2021 09:53:11 +0200 Message-ID: <20210419075311.34430-1-pawell@gli-login.cadence.com> X-Mailer: git-send-email 2.18.0 MIME-Version: 1.0 X-OrganizationHeadersPreserved: maileu3.global.cadence.com X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: deb8c46b-fd07-4042-fb50-08d903083c53 X-MS-TrafficTypeDiagnostic: DM6PR07MB5162: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:4303; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:158.140.1.148;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:sjmaillnx2.cadence.com;PTR:unknown.Cadence.COM;CAT:NONE;SFS:(4636009)(376002)(346002)(396003)(39860400002)(136003)(36092001)(36840700001)(46966006)(1076003)(42186006)(6916009)(82740400003)(2906002)(336012)(107886003)(26005)(316002)(8936002)(186003)(82310400003)(36860700001)(356005)(8676002)(70586007)(36906005)(478600001)(426003)(86362001)(7636003)(83380400001)(70206006)(54906003)(5660300002)(47076005)(6666004)(4326008);DIR:OUT;SFP:1101; X-OriginatorOrg: cadence.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 19 Apr 2021 07:53:35.5874 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: deb8c46b-fd07-4042-fb50-08d903083c53 X-MS-Exchange-CrossTenant-Id: d36035c5-6ce6-4662-a3dc-e762e61ae4c9 X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=d36035c5-6ce6-4662-a3dc-e762e61ae4c9;Ip=[158.140.1.148];Helo=[sjmaillnx2.cadence.com] X-MS-Exchange-CrossTenant-AuthSource: MW2NAM12FT026.eop-nam12.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR07MB5162 X-Proofpoint-GUID: eFjLEi_juI9puTMxFXvdA75dAd7bPxJk X-Proofpoint-ORIG-GUID: eFjLEi_juI9puTMxFXvdA75dAd7bPxJk X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.761 definitions=2021-04-19_02:2021-04-16,2021-04-19 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_check_notspam policy=outbound_check score=0 priorityscore=1501 mlxscore=0 adultscore=0 spamscore=0 lowpriorityscore=0 clxscore=1015 bulkscore=0 malwarescore=0 mlxlogscore=841 impostorscore=0 suspectscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104060000 definitions=main-2104190053 Precedence: bulk List-ID: X-Mailing-List: linux-usb@vger.kernel.org From: Pawel Laszczak Patch fixes lack of removing request from ep->pending_list on failure of the stop endpoint command. Driver even after failing this command must remove request from ep->pending_list. Without this fix driver can stuck in cdnsp_gadget_ep_disable function in loop: while (!list_empty(&pep->pending_list)) { preq = next_request(&pep->pending_list); cdnsp_ep_dequeue(pep, preq); } Signed-off-by: Pawel Laszczak --- drivers/usb/cdns3/cdnsp-gadget.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/usb/cdns3/cdnsp-gadget.c b/drivers/usb/cdns3/cdnsp-gadget.c index 6182c9bc65de..1ca8c1777a5c 100644 --- a/drivers/usb/cdns3/cdnsp-gadget.c +++ b/drivers/usb/cdns3/cdnsp-gadget.c @@ -424,17 +424,17 @@ int cdnsp_ep_enqueue(struct cdnsp_ep *pep, struct cdnsp_request *preq) int cdnsp_ep_dequeue(struct cdnsp_ep *pep, struct cdnsp_request *preq) { struct cdnsp_device *pdev = pep->pdev; - int ret; + int ret_stop = 0; + int ret_rem; trace_cdnsp_request_dequeue(preq); - if (GET_EP_CTX_STATE(pep->out_ctx) == EP_STATE_RUNNING) { - ret = cdnsp_cmd_stop_ep(pdev, pep); - if (ret) - return ret; - } + if (GET_EP_CTX_STATE(pep->out_ctx) == EP_STATE_RUNNING) + ret_stop = cdnsp_cmd_stop_ep(pdev, pep); + + ret_rem = cdnsp_remove_request(pdev, preq, pep); - return cdnsp_remove_request(pdev, preq, pep); + return ret_rem ? ret_rem : ret_stop; } static void cdnsp_zero_in_ctx(struct cdnsp_device *pdev)