From patchwork Tue Feb 24 10:01:48 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Dolca X-Patchwork-Id: 5871321 X-Patchwork-Delegate: kvalo@adurom.com Return-Path: X-Original-To: patchwork-linux-wireless@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 7355C9F373 for ; Tue, 24 Feb 2015 10:04:31 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 97B202065B for ; Tue, 24 Feb 2015 10:04:30 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 0EC7620650 for ; Tue, 24 Feb 2015 10:04:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753215AbbBXKCm (ORCPT ); Tue, 24 Feb 2015 05:02:42 -0500 Received: from mga02.intel.com ([134.134.136.20]:49814 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752586AbbBXKCf (ORCPT ); Tue, 24 Feb 2015 05:02:35 -0500 Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga101.jf.intel.com with ESMTP; 24 Feb 2015 02:02:33 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.09,637,1418112000"; d="scan'208";a="689920879" Received: from rdolca-desk.rb.intel.com ([10.237.104.134]) by orsmga002.jf.intel.com with ESMTP; 24 Feb 2015 02:02:30 -0800 From: Robert Dolca To: linux-nfc@lists.01.org, Lauro Ramos Venancio , Aloisio Almeida Jr , Samuel Ortiz Cc: linux-kernel@vger.kernel.org, linux-wireless@vger.kernel.org, netdev@vger.kernel.org, "David S. Miller" , Robert Dolca Subject: [PATCH 4/8] NFC: NCI: Add a special nci_request for driver Date: Tue, 24 Feb 2015 12:01:48 +0200 Message-Id: <1424772112-27399-5-git-send-email-robert.dolca@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1424772112-27399-1-git-send-email-robert.dolca@intel.com> References: <1424772112-27399-1-git-send-email-robert.dolca@intel.com> Sender: linux-wireless-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP This patch adds nci_request_driver and nci_req_complete_driver as a wrapper for __nci_request. When nci_req_complete_driver is called it also sets cmd_cnt to 1. This is done because the response is not sent to the NFC subsystem so cmd_cnt is not decremented there. nci_send_cmd was previously exported in order to send commands to the device from the driver. It shouldn't be used without nci_req_complete_driver because cmd_cnt will have the wrong value. Signed-off-by: Robert Dolca --- include/net/nfc/nci_core.h | 4 ++++ net/nfc/nci/core.c | 19 +++++++++++++++++++ 2 files changed, 23 insertions(+) diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h index 4358d0a..42ec342 100644 --- a/include/net/nfc/nci_core.h +++ b/include/net/nfc/nci_core.h @@ -333,6 +333,10 @@ void nci_clear_target_list(struct nci_dev *ndev); #define NCI_REQ_CANCELED 2 void nci_req_complete(struct nci_dev *ndev, int result); +int nci_request_driver(struct nci_dev *ndev, + void (*req)(struct nci_dev *ndev, unsigned long opt), + unsigned long opt, __u32 timeout); +void nci_req_complete_driver(struct nci_dev *ndev, int result); struct nci_conn_info *nci_get_conn_info_by_conn_id(struct nci_dev *ndev, int conn_id); diff --git a/net/nfc/nci/core.c b/net/nfc/nci/core.c index 317b94b..1a449ac 100644 --- a/net/nfc/nci/core.c +++ b/net/nfc/nci/core.c @@ -74,6 +74,17 @@ void nci_req_complete(struct nci_dev *ndev, int result) } } +void nci_req_complete_driver(struct nci_dev *ndev, int result) +{ + nci_req_complete(ndev, result); + + /* trigger the next cmd */ + atomic_set(&ndev->cmd_cnt, 1); + if (!skb_queue_empty(&ndev->cmd_q)) + queue_work(ndev->cmd_wq, &ndev->cmd_work); +} +EXPORT_SYMBOL(nci_req_complete_driver); + static void nci_req_cancel(struct nci_dev *ndev, int err) { if (ndev->req_status == NCI_REQ_PEND) { @@ -127,6 +138,14 @@ static int __nci_request(struct nci_dev *ndev, return rc; } +int nci_request_driver(struct nci_dev *ndev, + void (*req)(struct nci_dev *ndev, unsigned long opt), + unsigned long opt, __u32 timeout) +{ + return __nci_request(ndev, req, opt, timeout); +} +EXPORT_SYMBOL(nci_request_driver); + inline int nci_request(struct nci_dev *ndev, void (*req)(struct nci_dev *ndev, unsigned long opt),