From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932810AbdK2NqQ (ORCPT ); Wed, 29 Nov 2017 08:46:16 -0500 Received: from mga14.intel.com ([192.55.52.115]:40477 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754082AbdK2Nmg (ORCPT ); Wed, 29 Nov 2017 08:42:36 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.44,473,1505804400"; d="scan'208";a="1249888183" From: Adrian Hunter To: Ulf Hansson Cc: linux-mmc , linux-block , linux-kernel , Bough Chen , Alex Lemberg , Mateusz Nowak , Yuliy Izrailov , Jaehoon Chung , Dong Aisheng , Das Asutosh , Zhangfei Gao , Sahitya Tummala , Harjani Ritesh , Venu Byravarasu , Linus Walleij , Shawn Lin , Bartlomiej Zolnierkiewicz , Christoph Hellwig Subject: [PATCH V15 11/22] mmc: block: blk-mq: Separate card polling from recovery Date: Wed, 29 Nov 2017 15:41:08 +0200 Message-Id: <1511962879-24262-12-git-send-email-adrian.hunter@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1511962879-24262-1-git-send-email-adrian.hunter@intel.com> References: <1511962879-24262-1-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-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Recovery is simpler to understand if it is only used for errors. Create a separate function for card polling. Signed-off-by: Adrian Hunter --- drivers/mmc/core/block.c | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/drivers/mmc/core/block.c b/drivers/mmc/core/block.c index a710a6e95307..6d2c42c1c33a 100644 --- a/drivers/mmc/core/block.c +++ b/drivers/mmc/core/block.c @@ -2139,6 +2139,26 @@ static inline bool mmc_blk_rq_error(struct mmc_blk_request *brq) brq->data.error || brq->cmd.resp[0] & CMD_ERRORS; } +static int mmc_blk_card_busy(struct mmc_card *card, struct request *req) +{ + struct mmc_queue_req *mqrq = req_to_mmc_queue_req(req); + bool gen_err = false; + int err; + + if (mmc_host_is_spi(card->host) || rq_data_dir(req) == READ) + return 0; + + err = card_busy_detect(card, MMC_BLK_TIMEOUT_MS, false, req, &gen_err); + + /* Copy the general error bit so it will be seen later on */ + if (gen_err) { + mqrq->brq.stop.resp[0] |= R1_ERROR; + err = err ? err : -EIO; + } + + return err; +} + static inline void mmc_blk_rw_reset_success(struct mmc_queue *mq, struct request *req) { @@ -2197,8 +2217,15 @@ static void mmc_blk_mq_poll_completion(struct mmc_queue *mq, struct request *req) { struct mmc_queue_req *mqrq = req_to_mmc_queue_req(req); + struct mmc_host *host = mq->card->host; - mmc_blk_mq_rw_recovery(mq, req); + if (mmc_blk_rq_error(&mqrq->brq) || + mmc_blk_card_busy(mq->card, req)) { + mmc_blk_mq_rw_recovery(mq, req); + } else { + mmc_blk_rw_reset_success(mq, req); + mmc_retune_release(host); + } mmc_blk_urgent_bkops(mq, mqrq); } -- 1.9.1