From patchwork Mon Jul 29 13:43:37 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Saranya Gopal X-Patchwork-Id: 11063863 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 DE12A1399 for ; Mon, 29 Jul 2019 13:43:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CD1532849B for ; Mon, 29 Jul 2019 13:43:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C104D286C4; Mon, 29 Jul 2019 13:43:19 +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 61D6C2849B for ; Mon, 29 Jul 2019 13:43:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727353AbfG2NnT (ORCPT ); Mon, 29 Jul 2019 09:43:19 -0400 Received: from mga05.intel.com ([192.55.52.43]:59656 "EHLO mga05.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726926AbfG2NnS (ORCPT ); Mon, 29 Jul 2019 09:43:18 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 29 Jul 2019 06:43:18 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.64,322,1559545200"; d="scan'208";a="370495855" Received: from saranya-h97m-d3h.iind.intel.com ([10.66.254.8]) by fmsmga005.fm.intel.com with ESMTP; 29 Jul 2019 06:43:16 -0700 From: Saranya Gopal To: stable@vger.kernel.org Cc: linux-usb@vger.kernel.org, fei.yang@intel.com, john.stultz@linaro.org, Felipe Balbi , Saranya Gopal Subject: [PATCH 4.19.y 1/3] usb: dwc3: gadget: add dwc3_request status tracking Date: Mon, 29 Jul 2019 19:13:37 +0530 Message-Id: <1564407819-10746-2-git-send-email-saranya.gopal@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1564407819-10746-1-git-send-email-saranya.gopal@intel.com> References: <1564407819-10746-1-git-send-email-saranya.gopal@intel.com> 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 From: Felipe Balbi [Upstream commit a3af5e3ad3f11a0001317da9e9fb78b] This patch starts tracking dwc3_request status. A following patch will build on top of this to prevent a request from being queued twice. Signed-off-by: Felipe Balbi Signed-off-by: Saranya Gopal --- drivers/usb/dwc3/core.h | 9 +++++++++ drivers/usb/dwc3/gadget.c | 3 +++ drivers/usb/dwc3/gadget.h | 2 ++ 3 files changed, 14 insertions(+) diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h index 13102850..301bf94 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -843,6 +843,7 @@ struct dwc3_hwparams { * @num_pending_sgs: counter to pending sgs * @num_queued_sgs: counter to the number of sgs which already got queued * @remaining: amount of data remaining + * @status: internal dwc3 request status tracking * @epnum: endpoint number to which this request refers * @trb: pointer to struct dwc3_trb * @trb_dma: DMA address of @trb @@ -863,6 +864,14 @@ struct dwc3_request { unsigned num_pending_sgs; unsigned int num_queued_sgs; unsigned remaining; + + unsigned int status; +#define DWC3_REQUEST_STATUS_QUEUED 0 +#define DWC3_REQUEST_STATUS_STARTED 1 +#define DWC3_REQUEST_STATUS_CANCELLED 2 +#define DWC3_REQUEST_STATUS_COMPLETED 3 +#define DWC3_REQUEST_STATUS_UNKNOWN -1 + u8 epnum; struct dwc3_trb *trb; dma_addr_t trb_dma; diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index e7461c9..3f337a0 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -209,6 +209,7 @@ void dwc3_gadget_giveback(struct dwc3_ep *dep, struct dwc3_request *req, struct dwc3 *dwc = dep->dwc; dwc3_gadget_del_and_unmap_request(dep, req, status); + req->status = DWC3_REQUEST_STATUS_COMPLETED; spin_unlock(&dwc->lock); usb_gadget_giveback_request(&dep->endpoint, &req->request); @@ -838,6 +839,7 @@ static struct usb_request *dwc3_gadget_ep_alloc_request(struct usb_ep *ep, req->direction = dep->direction; req->epnum = dep->number; req->dep = dep; + req->status = DWC3_REQUEST_STATUS_UNKNOWN; trace_dwc3_alloc_request(req); @@ -1297,6 +1299,7 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req) trace_dwc3_ep_queue(req); list_add_tail(&req->list, &dep->pending_list); + req->status = DWC3_REQUEST_STATUS_QUEUED; /* * NOTICE: Isochronous endpoints should NEVER be prestarted. We must diff --git a/drivers/usb/dwc3/gadget.h b/drivers/usb/dwc3/gadget.h index 023a473..6aebe8c 100644 --- a/drivers/usb/dwc3/gadget.h +++ b/drivers/usb/dwc3/gadget.h @@ -76,6 +76,7 @@ static inline void dwc3_gadget_move_started_request(struct dwc3_request *req) struct dwc3_ep *dep = req->dep; req->started = true; + req->status = DWC3_REQUEST_STATUS_STARTED; list_move_tail(&req->list, &dep->started_list); } @@ -91,6 +92,7 @@ static inline void dwc3_gadget_move_cancelled_request(struct dwc3_request *req) struct dwc3_ep *dep = req->dep; req->started = false; + req->status = DWC3_REQUEST_STATUS_CANCELLED; list_move_tail(&req->list, &dep->cancelled_list); }