From patchwork Mon Oct 24 08:37:19 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Adrian Hunter X-Patchwork-Id: 9391683 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3116460231 for ; Mon, 24 Oct 2016 08:43:00 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 21E4D28D80 for ; Mon, 24 Oct 2016 08:43:00 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1635428D89; Mon, 24 Oct 2016 08:43:00 +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=-6.9 required=2.0 tests=BAYES_00,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 1803828D8B for ; Mon, 24 Oct 2016 08:42:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935241AbcJXImx (ORCPT ); Mon, 24 Oct 2016 04:42:53 -0400 Received: from mga09.intel.com ([134.134.136.24]:33721 "EHLO mga09.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S935974AbcJXImu (ORCPT ); Mon, 24 Oct 2016 04:42:50 -0400 Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga102.jf.intel.com with ESMTP; 24 Oct 2016 01:42:50 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.31,541,1473145200"; d="scan'208";a="183077058" Received: from ahunter-desktop.fi.intel.com ([10.237.72.168]) by fmsmga004.fm.intel.com with ESMTP; 24 Oct 2016 01:42:46 -0700 From: Adrian Hunter To: Ulf Hansson Cc: linux-mmc , Alex Lemberg , Mateusz Nowak , Yuliy Izrailov , Jaehoon Chung , Dong Aisheng , Das Asutosh , Zhangfei Gao , Dorfman Konstantin , David Griego , Sahitya Tummala , Harjani Ritesh , Venu Byravarasu Subject: [PATCH V5 04/25] mmc: queue: Factor out mmc_queue_alloc_sgs() Date: Mon, 24 Oct 2016 11:37:19 +0300 Message-Id: <1477298260-5064-5-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1477298260-5064-1-git-send-email-adrian.hunter@intel.com> References: <1477298260-5064-1-git-send-email-adrian.hunter@intel.com> Organization: Intel Finland Oy, Registered Address: PL 281, 00181 Helsinki, Business Identity Code: 0357606 - 4, Domiciled in Helsinki Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP In preparation for supporting a queue of requests, factor out mmc_queue_alloc_sgs(). Signed-off-by: Adrian Hunter --- drivers/mmc/card/queue.c | 22 ++++++++++++++++------ 1 file changed, 16 insertions(+), 6 deletions(-) diff --git a/drivers/mmc/card/queue.c b/drivers/mmc/card/queue.c index 7e23f60e5c1e..1d07472e6efe 100644 --- a/drivers/mmc/card/queue.c +++ b/drivers/mmc/card/queue.c @@ -235,6 +235,21 @@ static int mmc_queue_alloc_bounce_sgs(struct mmc_queue *mq, return ret; } +static int mmc_queue_alloc_sgs(struct mmc_queue *mq, int max_segs) +{ + struct mmc_queue_req *mqrq_cur = mq->mqrq_cur; + struct mmc_queue_req *mqrq_prev = mq->mqrq_prev; + int ret; + + mqrq_cur->sg = mmc_alloc_sg(max_segs, &ret); + if (ret) + return ret; + + mqrq_prev->sg = mmc_alloc_sg(max_segs, &ret); + + return ret; +} + /** * mmc_init_queue - initialise a queue structure. * @mq: mmc queue @@ -307,12 +322,7 @@ int mmc_init_queue(struct mmc_queue *mq, struct mmc_card *card, blk_queue_max_segments(mq->queue, host->max_segs); blk_queue_max_segment_size(mq->queue, host->max_seg_size); - mqrq_cur->sg = mmc_alloc_sg(host->max_segs, &ret); - if (ret) - goto cleanup_queue; - - - mqrq_prev->sg = mmc_alloc_sg(host->max_segs, &ret); + ret = mmc_queue_alloc_sgs(mq, host->max_segs); if (ret) goto cleanup_queue; }