From patchwork Thu Mar 23 21:27:21 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Heiner Kallweit X-Patchwork-Id: 9642075 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 A6C46602D6 for ; Thu, 23 Mar 2017 21:27:44 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 9809F2833B for ; Thu, 23 Mar 2017 21:27:44 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8CB5B2845B; Thu, 23 Mar 2017 21:27:44 +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=-6.3 required=2.0 tests=BAYES_00, DKIM_ADSP_CUSTOM_MED, DKIM_SIGNED, FREEMAIL_FROM, RCVD_IN_DNSWL_HI, RCVD_IN_SORBS_SPAM, T_DKIM_INVALID 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 AAA8528354 for ; Thu, 23 Mar 2017 21:27:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752650AbdCWV1k (ORCPT ); Thu, 23 Mar 2017 17:27:40 -0400 Received: from mail-wm0-f66.google.com ([74.125.82.66]:33652 "EHLO mail-wm0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751336AbdCWV1j (ORCPT ); Thu, 23 Mar 2017 17:27:39 -0400 Received: by mail-wm0-f66.google.com with SMTP id n11so1829495wma.0 for ; Thu, 23 Mar 2017 14:27:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:cc:from:message-id:date:user-agent :mime-version:in-reply-to:content-transfer-encoding; bh=g8NzZbfb1fO3S9IinzHugMklTx3B3FnKiWWb0bEA4J4=; b=PS4OCkTs/90drQZrk/l2fRXkuqZdMgxnngxYEUjXk0C+boIna+rKUALZhC08gJahqm zIDTnr0/ad6DWVyapbcvfCnQgQkTcsQr0y8sFsZEd055BvaCZ7KeaGp9Tz1Q/Y7qCnRE JA48IKCfvhhDmGRElm3PQMAeePaTz2KTVu3SHBut8f8nGfom5ih25PikF5liGq2VY1os 9we8zbmeVFQhZjCJxbgmaZolTcKh4JG2ayokGifQTYAdR4hn4pc+8bzhShzZ+99kw8Ba r4TqAKCPxjENHXLggSivqUzPBnTufg1EjW4BJcINeQFkyw4fCbPp8TzS+Q8Spmm2pBwl UsGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:cc:from:message-id:date :user-agent:mime-version:in-reply-to:content-transfer-encoding; bh=g8NzZbfb1fO3S9IinzHugMklTx3B3FnKiWWb0bEA4J4=; b=pZuNzf5xwUGz3pL2dP142BsC2/dF/GkY2y65VkGuaxnk6J2uAzC/pXYhiOS7BiXvw+ RmyvSprAukrHdQQ6T5fne7YGb42GuVFUpqxA3tHteEQ0YSQosmx16kBRtsCV8zKbRm/A eLT3vGk6O+nMoS/90WpVVZIj1hotg6GVuxKcmqAoCj/F75Vp65zxnOR63DuMMFUzpy4g YCe+JJObAXWrTK9hpoKRzfUHkZpX/6lSi3hBuRnzg2VXVc6XCtYufpSOXmdJlB7m+in6 eixxWwwTUI7qJMeTmFUTIaZhW+S0P8atp4JH9G6pt1PtKS+67UlewsQEhsd6evrvPOYT ydnw== X-Gm-Message-State: AFeK/H1EodX6h6Ycf8Ig92LndPQcZk13e9G+D+DIhIGFvG6BD8pGakfLr0Llu9Ej47gPTw== X-Received: by 10.28.38.133 with SMTP id m127mr4699424wmm.41.1490304457233; Thu, 23 Mar 2017 14:27:37 -0700 (PDT) Received: from ?IPv6:2003:c6:ebdc:4000:7465:efb3:5dc7:eda3? (p200300C6EBDC40007465EFB35DC7EDA3.dip0.t-ipconnect.de. [2003:c6:ebdc:4000:7465:efb3:5dc7:eda3]) by smtp.googlemail.com with ESMTPSA id g13sm5924827wmd.28.2017.03.23.14.27.36 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 23 Mar 2017 14:27:36 -0700 (PDT) Subject: [PATCH 2/2] mmc: use new core function mmc_get_dma_dir To: Ulf Hansson References: <44d784c1-ab30-db59-9037-db8c87935b43@gmail.com> Cc: "linux-mmc@vger.kernel.org" From: Heiner Kallweit Message-ID: <21c2e340-99d9-a995-fea8-3cc3981124dc@gmail.com> Date: Thu, 23 Mar 2017 22:27:21 +0100 User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <44d784c1-ab30-db59-9037-db8c87935b43@gmail.com> 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 Use new core function mmc_get_dma_dir(). Signed-off-by: Heiner Kallweit --- drivers/mmc/host/android-goldfish.c | 10 ++-------- drivers/mmc/host/atmel-mci.c | 6 ++---- drivers/mmc/host/davinci_mmc.c | 10 +++------- drivers/mmc/host/dw_mmc.c | 14 +++----------- drivers/mmc/host/jz4740_mmc.c | 9 ++------- drivers/mmc/host/mmc_spi.c | 5 +---- drivers/mmc/host/mtk-sd.c | 8 ++------ drivers/mmc/host/mvsdio.c | 11 +++++------ drivers/mmc/host/omap_hsmmc.c | 17 ++++------------- drivers/mmc/host/s3cmci.c | 4 ++-- drivers/mmc/host/sdhci.c | 9 +++------ drivers/mmc/host/sunxi-mmc.c | 14 +++----------- 12 files changed, 32 insertions(+), 85 deletions(-) diff --git a/drivers/mmc/host/android-goldfish.c b/drivers/mmc/host/android-goldfish.c index 590a8a45..5b3e1c9b 100644 --- a/drivers/mmc/host/android-goldfish.c +++ b/drivers/mmc/host/android-goldfish.c @@ -212,10 +212,7 @@ static void goldfish_mmc_xfer_done(struct goldfish_mmc_host *host, if (host->dma_in_use) { enum dma_data_direction dma_data_dir; - if (data->flags & MMC_DATA_WRITE) - dma_data_dir = DMA_TO_DEVICE; - else - dma_data_dir = DMA_FROM_DEVICE; + dma_data_dir = mmc_get_dma_dir(data); if (dma_data_dir == DMA_FROM_DEVICE) { /* @@ -390,10 +387,7 @@ static void goldfish_mmc_prepare_data(struct goldfish_mmc_host *host, */ sg_len = (data->blocks == 1) ? 1 : data->sg_len; - if (data->flags & MMC_DATA_WRITE) - dma_data_dir = DMA_TO_DEVICE; - else - dma_data_dir = DMA_FROM_DEVICE; + dma_data_dir = mmc_get_dma_dir(data); host->sg_len = dma_map_sg(mmc_dev(host->mmc), data->sg, sg_len, dma_data_dir); diff --git a/drivers/mmc/host/atmel-mci.c b/drivers/mmc/host/atmel-mci.c index 0ad8ef56..1ad3b9cd 100644 --- a/drivers/mmc/host/atmel-mci.c +++ b/drivers/mmc/host/atmel-mci.c @@ -954,8 +954,7 @@ static void atmci_pdc_cleanup(struct atmel_mci *host) if (data) dma_unmap_sg(&host->pdev->dev, data->sg, data->sg_len, - ((data->flags & MMC_DATA_WRITE) - ? DMA_TO_DEVICE : DMA_FROM_DEVICE)); + mmc_get_dma_dir(data)); } /* @@ -993,8 +992,7 @@ static void atmci_dma_cleanup(struct atmel_mci *host) if (data) dma_unmap_sg(host->dma.chan->device->dev, data->sg, data->sg_len, - ((data->flags & MMC_DATA_WRITE) - ? DMA_TO_DEVICE : DMA_FROM_DEVICE)); + mmc_get_dma_dir(data)); } /* diff --git a/drivers/mmc/host/davinci_mmc.c b/drivers/mmc/host/davinci_mmc.c index 1e2600da..9b1ecc12 100644 --- a/drivers/mmc/host/davinci_mmc.c +++ b/drivers/mmc/host/davinci_mmc.c @@ -478,18 +478,14 @@ static int mmc_davinci_start_dma_transfer(struct mmc_davinci_host *host, int ret = 0; host->sg_len = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len, - ((data->flags & MMC_DATA_WRITE) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE)); + mmc_get_dma_dir(data)); /* no individual DMA segment should need a partial FIFO */ for (i = 0; i < host->sg_len; i++) { if (sg_dma_len(data->sg + i) & mask) { dma_unmap_sg(mmc_dev(host->mmc), - data->sg, data->sg_len, - (data->flags & MMC_DATA_WRITE) - ? DMA_TO_DEVICE - : DMA_FROM_DEVICE); + data->sg, data->sg_len, + mmc_get_dma_dir(data)); return -1; } } diff --git a/drivers/mmc/host/dw_mmc.c b/drivers/mmc/host/dw_mmc.c index e165db05..249ded65 100644 --- a/drivers/mmc/host/dw_mmc.c +++ b/drivers/mmc/host/dw_mmc.c @@ -431,14 +431,6 @@ static void dw_mci_stop_dma(struct dw_mci *host) set_bit(EVENT_XFER_COMPLETE, &host->pending_events); } -static int dw_mci_get_dma_dir(struct mmc_data *data) -{ - if (data->flags & MMC_DATA_WRITE) - return DMA_TO_DEVICE; - else - return DMA_FROM_DEVICE; -} - static void dw_mci_dma_cleanup(struct dw_mci *host) { struct mmc_data *data = host->data; @@ -447,7 +439,7 @@ static void dw_mci_dma_cleanup(struct dw_mci *host) dma_unmap_sg(host->dev, data->sg, data->sg_len, - dw_mci_get_dma_dir(data)); + mmc_get_dma_dir(data)); data->host_cookie = COOKIE_UNMAPPED; } } @@ -903,7 +895,7 @@ static int dw_mci_pre_dma_transfer(struct dw_mci *host, sg_len = dma_map_sg(host->dev, data->sg, data->sg_len, - dw_mci_get_dma_dir(data)); + mmc_get_dma_dir(data)); if (sg_len == 0) return -EINVAL; @@ -943,7 +935,7 @@ static void dw_mci_post_req(struct mmc_host *mmc, dma_unmap_sg(slot->host->dev, data->sg, data->sg_len, - dw_mci_get_dma_dir(data)); + mmc_get_dma_dir(data)); data->host_cookie = COOKIE_UNMAPPED; } diff --git a/drivers/mmc/host/jz4740_mmc.c b/drivers/mmc/host/jz4740_mmc.c index 819ad329..57e254aa 100644 --- a/drivers/mmc/host/jz4740_mmc.c +++ b/drivers/mmc/host/jz4740_mmc.c @@ -200,11 +200,6 @@ static int jz4740_mmc_acquire_dma_channels(struct jz4740_mmc_host *host) return -ENODEV; } -static inline int jz4740_mmc_get_dma_dir(struct mmc_data *data) -{ - return (data->flags & MMC_DATA_READ) ? DMA_FROM_DEVICE : DMA_TO_DEVICE; -} - static inline struct dma_chan *jz4740_mmc_get_dma_chan(struct jz4740_mmc_host *host, struct mmc_data *data) { @@ -215,7 +210,7 @@ static void jz4740_mmc_dma_unmap(struct jz4740_mmc_host *host, struct mmc_data *data) { struct dma_chan *chan = jz4740_mmc_get_dma_chan(host, data); - enum dma_data_direction dir = jz4740_mmc_get_dma_dir(data); + enum dma_data_direction dir = mmc_get_dma_dir(data); dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, dir); } @@ -227,7 +222,7 @@ static int jz4740_mmc_prepare_dma_data(struct jz4740_mmc_host *host, struct dma_chan *chan) { struct jz4740_mmc_host_next *next_data = &host->next_data; - enum dma_data_direction dir = jz4740_mmc_get_dma_dir(data); + enum dma_data_direction dir = mmc_get_dma_dir(data); int sg_len; if (!next && data->host_cookie && diff --git a/drivers/mmc/host/mmc_spi.c b/drivers/mmc/host/mmc_spi.c index e77d79c8..476e53d3 100644 --- a/drivers/mmc/host/mmc_spi.c +++ b/drivers/mmc/host/mmc_spi.c @@ -888,10 +888,7 @@ mmc_spi_data_do(struct mmc_spi_host *host, struct mmc_command *cmd, u32 clock_rate; unsigned long timeout; - if (data->flags & MMC_DATA_READ) - direction = DMA_FROM_DEVICE; - else - direction = DMA_TO_DEVICE; + direction = mmc_get_dma_dir(data); mmc_spi_setup_data_message(host, multiple, direction); t = &host->t; diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c index b235d8da..c8b0b6b9 100644 --- a/drivers/mmc/host/mtk-sd.c +++ b/drivers/mmc/host/mtk-sd.c @@ -462,11 +462,9 @@ static void msdc_prepare_data(struct msdc_host *host, struct mmc_request *mrq) struct mmc_data *data = mrq->data; if (!(data->host_cookie & MSDC_PREPARE_FLAG)) { - bool read = (data->flags & MMC_DATA_READ) != 0; - data->host_cookie |= MSDC_PREPARE_FLAG; data->sg_count = dma_map_sg(host->dev, data->sg, data->sg_len, - read ? DMA_FROM_DEVICE : DMA_TO_DEVICE); + mmc_get_dma_dir(data)); } } @@ -478,10 +476,8 @@ static void msdc_unprepare_data(struct msdc_host *host, struct mmc_request *mrq) return; if (data->host_cookie & MSDC_PREPARE_FLAG) { - bool read = (data->flags & MMC_DATA_READ) != 0; - dma_unmap_sg(host->dev, data->sg, data->sg_len, - read ? DMA_FROM_DEVICE : DMA_TO_DEVICE); + mmc_get_dma_dir(data)); data->host_cookie &= ~MSDC_PREPARE_FLAG; } } diff --git a/drivers/mmc/host/mvsdio.c b/drivers/mmc/host/mvsdio.c index 42296e55..58d74b8d 100644 --- a/drivers/mmc/host/mvsdio.c +++ b/drivers/mmc/host/mvsdio.c @@ -125,10 +125,10 @@ static int mvsd_setup_data(struct mvsd_host *host, struct mmc_data *data) return 1; } else { dma_addr_t phys_addr; - int dma_dir = (data->flags & MMC_DATA_READ) ? - DMA_FROM_DEVICE : DMA_TO_DEVICE; - host->sg_frags = dma_map_sg(mmc_dev(host->mmc), data->sg, - data->sg_len, dma_dir); + + host->sg_frags = dma_map_sg(mmc_dev(host->mmc), + data->sg, data->sg_len, + mmc_get_dma_dir(data)); phys_addr = sg_dma_address(data->sg); mvsd_write(MVSD_SYS_ADDR_LOW, (u32)phys_addr & 0xffff); mvsd_write(MVSD_SYS_ADDR_HI, (u32)phys_addr >> 16); @@ -294,8 +294,7 @@ static u32 mvsd_finish_data(struct mvsd_host *host, struct mmc_data *data, host->pio_size = 0; } else { dma_unmap_sg(mmc_dev(host->mmc), data->sg, host->sg_frags, - (data->flags & MMC_DATA_READ) ? - DMA_FROM_DEVICE : DMA_TO_DEVICE); + mmc_get_dma_dir(data)); } if (err_status & MVSD_ERR_DATA_TIMEOUT) diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c index a58bd653..bf64cf23 100644 --- a/drivers/mmc/host/omap_hsmmc.c +++ b/drivers/mmc/host/omap_hsmmc.c @@ -935,15 +935,6 @@ omap_hsmmc_start_command(struct omap_hsmmc_host *host, struct mmc_command *cmd, OMAP_HSMMC_WRITE(host->base, CMD, cmdreg); } -static int -omap_hsmmc_get_dma_dir(struct omap_hsmmc_host *host, struct mmc_data *data) -{ - if (data->flags & MMC_DATA_WRITE) - return DMA_TO_DEVICE; - else - return DMA_FROM_DEVICE; -} - static struct dma_chan *omap_hsmmc_get_dma_chan(struct omap_hsmmc_host *host, struct mmc_data *data) { @@ -1055,7 +1046,7 @@ static void omap_hsmmc_dma_cleanup(struct omap_hsmmc_host *host, int errno) dmaengine_terminate_all(chan); dma_unmap_sg(chan->device->dev, host->data->sg, host->data->sg_len, - omap_hsmmc_get_dma_dir(host, host->data)); + mmc_get_dma_dir(host->data)); host->data->host_cookie = 0; } @@ -1350,7 +1341,7 @@ static void omap_hsmmc_dma_callback(void *param) if (!data->host_cookie) dma_unmap_sg(chan->device->dev, data->sg, data->sg_len, - omap_hsmmc_get_dma_dir(host, data)); + mmc_get_dma_dir(data)); req_in_progress = host->req_in_progress; host->dma_ch = -1; @@ -1383,7 +1374,7 @@ static int omap_hsmmc_pre_dma_transfer(struct omap_hsmmc_host *host, /* Check if next job is already prepared */ if (next || data->host_cookie != host->next_data.cookie) { dma_len = dma_map_sg(chan->device->dev, data->sg, data->sg_len, - omap_hsmmc_get_dma_dir(host, data)); + mmc_get_dma_dir(data)); } else { dma_len = host->next_data.dma_len; @@ -1569,7 +1560,7 @@ static void omap_hsmmc_post_req(struct mmc_host *mmc, struct mmc_request *mrq, struct dma_chan *c = omap_hsmmc_get_dma_chan(host, data); dma_unmap_sg(c->device->dev, data->sg, data->sg_len, - omap_hsmmc_get_dma_dir(host, data)); + mmc_get_dma_dir(data)); data->host_cookie = 0; } } diff --git a/drivers/mmc/host/s3cmci.c b/drivers/mmc/host/s3cmci.c index 7a173f8c..5c9037eb 100644 --- a/drivers/mmc/host/s3cmci.c +++ b/drivers/mmc/host/s3cmci.c @@ -1104,7 +1104,7 @@ static int s3cmci_prepare_dma(struct s3cmci_host *host, struct mmc_data *data) conf.direction = DMA_MEM_TO_DEV; dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len, - rw ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + mmc_get_dma_dir(data)); dmaengine_slave_config(host->dma, &conf); desc = dmaengine_prep_slave_sg(host->dma, data->sg, data->sg_len, @@ -1121,7 +1121,7 @@ static int s3cmci_prepare_dma(struct s3cmci_host *host, struct mmc_data *data) unmap_exit: dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, - rw ? DMA_TO_DEVICE : DMA_FROM_DEVICE); + mmc_get_dma_dir(data)); return -ENOMEM; } diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index a33102fc..af8b60f3 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -502,8 +502,7 @@ static int sdhci_pre_dma_transfer(struct sdhci_host *host, return data->sg_count; sg_count = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len, - data->flags & MMC_DATA_WRITE ? - DMA_TO_DEVICE : DMA_FROM_DEVICE); + mmc_get_dma_dir(data)); if (sg_count == 0) return -ENOSPC; @@ -2213,8 +2212,7 @@ static void sdhci_post_req(struct mmc_host *mmc, struct mmc_request *mrq, if (data->host_cookie != COOKIE_UNMAPPED) dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, - data->flags & MMC_DATA_WRITE ? - DMA_TO_DEVICE : DMA_FROM_DEVICE); + mmc_get_dma_dir(data)); data->host_cookie = COOKIE_UNMAPPED; } @@ -2330,8 +2328,7 @@ static bool sdhci_request_done(struct sdhci_host *host) if (data && data->host_cookie == COOKIE_MAPPED) { dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, - (data->flags & MMC_DATA_READ) ? - DMA_FROM_DEVICE : DMA_TO_DEVICE); + mmc_get_dma_dir(data)); data->host_cookie = COOKIE_UNMAPPED; } } diff --git a/drivers/mmc/host/sunxi-mmc.c b/drivers/mmc/host/sunxi-mmc.c index 6ffcd283..ea415b0d 100644 --- a/drivers/mmc/host/sunxi-mmc.c +++ b/drivers/mmc/host/sunxi-mmc.c @@ -385,14 +385,6 @@ static void sunxi_mmc_init_idma_des(struct sunxi_mmc_host *host, wmb(); } -static enum dma_data_direction sunxi_mmc_get_dma_dir(struct mmc_data *data) -{ - if (data->flags & MMC_DATA_WRITE) - return DMA_TO_DEVICE; - else - return DMA_FROM_DEVICE; -} - static int sunxi_mmc_map_dma(struct sunxi_mmc_host *host, struct mmc_data *data) { @@ -400,7 +392,7 @@ static int sunxi_mmc_map_dma(struct sunxi_mmc_host *host, struct scatterlist *sg; dma_len = dma_map_sg(mmc_dev(host->mmc), data->sg, data->sg_len, - sunxi_mmc_get_dma_dir(data)); + mmc_get_dma_dir(data)); if (dma_len == 0) { dev_err(mmc_dev(host->mmc), "dma_map_sg failed\n"); return -ENOMEM; @@ -551,7 +543,7 @@ static irqreturn_t sunxi_mmc_finalize_request(struct sunxi_mmc_host *host) rval |= SDXC_FIFO_RESET; mmc_writel(host, REG_GCTRL, rval); dma_unmap_sg(mmc_dev(host->mmc), data->sg, data->sg_len, - sunxi_mmc_get_dma_dir(data)); + mmc_get_dma_dir(data)); } mmc_writel(host, REG_RINTR, 0xffff); @@ -1022,7 +1014,7 @@ static void sunxi_mmc_request(struct mmc_host *mmc, struct mmc_request *mrq) if (data) dma_unmap_sg(mmc_dev(mmc), data->sg, data->sg_len, - sunxi_mmc_get_dma_dir(data)); + mmc_get_dma_dir(data)); dev_err(mmc_dev(mmc), "request already pending\n"); mrq->cmd->error = -EBUSY;