From c97d3b0f76ba9a2e0840f1f5baaf733db00c8fcd Mon Sep 17 00:00:00 2001 From: Laura Abbott Date: Sun, 30 Dec 2018 09:30:50 -0800 Subject: Linux v4.20-9163-g195303136f19 --- bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch | 1104 -------------------- 1 file changed, 1104 deletions(-) delete mode 100644 bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch (limited to 'bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch') diff --git a/bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch b/bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch deleted file mode 100644 index 8cea1b2d3..000000000 --- a/bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch +++ /dev/null @@ -1,1104 +0,0 @@ -From patchwork Sun Nov 11 20:23:53 2018 -Content-Type: text/plain; charset="utf-8" -MIME-Version: 1.0 -Content-Transfer-Encoding: 7bit -X-Patchwork-Submitter: Stefan Wahren -X-Patchwork-Id: 10677859 -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 9806E14BD - for ; 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charset="us-ascii" -Sender: "linux-arm-kernel" -Errors-To: - linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org -X-Virus-Scanned: ClamAV using ClamSMTP - -From: Michal Suchanek - -The bcm2835 mmc host tends to lock up for unknown reason so reset it on -timeout. The upper mmc block layer tries retransimitting with single -blocks which tends to work out after a long wait. - -This is better than giving up and leaving the machine broken for no -obvious reason. - -Fixes: 660fc733bd74 ("mmc: bcm2835: Add new driver for the sdhost controller.") -Signed-off-by: Michal Suchanek -Signed-off-by: Stefan Wahren ---- - drivers/mmc/host/bcm2835.c | 3 +++ - 1 file changed, 3 insertions(+) - -diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c -index 768972a..f1712df 100644 ---- a/drivers/mmc/host/bcm2835.c -+++ b/drivers/mmc/host/bcm2835.c -@@ -286,6 +286,7 @@ static void bcm2835_reset(struct mmc_host *mmc) - - if (host->dma_chan) - dmaengine_terminate_sync(host->dma_chan); -+ host->dma_chan = NULL; - bcm2835_reset_internal(host); - } - -@@ -837,6 +838,8 @@ static void bcm2835_timeout(struct work_struct *work) - dev_err(dev, "timeout waiting for hardware interrupt.\n"); - bcm2835_dumpregs(host); - -+ bcm2835_reset(host->mmc); -+ - if (host->data) { - host->data->error = -ETIMEDOUT; - bcm2835_finish_data(host); - -From patchwork Sun Nov 11 20:23:54 2018 -Content-Type: text/plain; charset="utf-8" -MIME-Version: 1.0 -Content-Transfer-Encoding: 7bit -X-Patchwork-Submitter: Stefan Wahren -X-Patchwork-Id: 10677841 -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 A795C46E4 - for ; - Sun, 11 Nov 2018 20:24:59 +0000 (UTC) -Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) - by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 952C12969C - for ; - Sun, 11 Nov 2018 20:24:59 +0000 (UTC) -Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) - id 89924296F9; Sun, 11 Nov 2018 20:24:59 +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=-3.6 required=2.0 tests=BAYES_00,DKIM_SIGNED, - DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_LOW autolearn=ham version=3.3.1 -Received: from bombadil.infradead.org (bombadil.infradead.org - [198.137.202.133]) - (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) - (No client certificate requested) - by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8AD6F296EB - for ; 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charset="us-ascii" -Sender: "linux-arm-kernel" -Errors-To: - linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org -X-Virus-Scanned: ClamAV using ClamSMTP - -From: Phil Elwell - -If the user issues an "mmc extcsd read", the SD controller receives -what it thinks is a SEND_IF_COND command with an unexpected data block. -The resulting operations leave the FSM stuck in READWAIT, a state which -persists until the MMC framework resets the controller, by which point -the root filesystem is likely to have been unmounted. - -A less heavyweight solution is to detect the condition and nudge the -FSM by asserting the (self-clearing) FORCE_DATA_MODE bit. - -Link: https://github.com/raspberrypi/linux/issues/2728 -Signed-off-by: Phil Elwell -Signed-off-by: Stefan Wahren ---- - drivers/mmc/host/bcm2835.c | 9 +++++++++ - 1 file changed, 9 insertions(+) - -diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c -index f1712df..a251be2 100644 ---- a/drivers/mmc/host/bcm2835.c -+++ b/drivers/mmc/host/bcm2835.c -@@ -773,6 +773,8 @@ static void bcm2835_finish_command(struct bcm2835_host *host) - - if (!(sdhsts & SDHSTS_CRC7_ERROR) || - (host->cmd->opcode != MMC_SEND_OP_COND)) { -+ u32 edm, fsm; -+ - if (sdhsts & SDHSTS_CMD_TIME_OUT) { - host->cmd->error = -ETIMEDOUT; - } else { -@@ -781,6 +783,13 @@ static void bcm2835_finish_command(struct bcm2835_host *host) - bcm2835_dumpregs(host); - host->cmd->error = -EILSEQ; - } -+ edm = readl(host->ioaddr + SDEDM); -+ fsm = edm & SDEDM_FSM_MASK; -+ if (fsm == SDEDM_FSM_READWAIT || -+ fsm == SDEDM_FSM_WRITESTART1) -+ /* Kick the FSM out of its wait */ -+ writel(edm | SDEDM_FORCE_DATA_MODE, -+ host->ioaddr + SDEDM); - bcm2835_finish_request(host); - return; - } - -From patchwork Sun Nov 11 20:23:55 2018 -Content-Type: text/plain; charset="utf-8" -MIME-Version: 1.0 -Content-Transfer-Encoding: 7bit -X-Patchwork-Submitter: Stefan Wahren -X-Patchwork-Id: 10677861 -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 3920A14BD - for ; - Sun, 11 Nov 2018 20:26:49 +0000 (UTC) -Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) - by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2BB86296F9 - for ; 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charset="us-ascii" -Sender: "linux-arm-kernel" -Errors-To: - linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org -X-Virus-Scanned: ClamAV using ClamSMTP - -We need to release the slave DMA channel during driver unload. - -Signed-off-by: Stefan Wahren ---- - drivers/mmc/host/bcm2835.c | 3 +++ - 1 file changed, 3 insertions(+) - -diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c -index a251be2..45724ef 100644 ---- a/drivers/mmc/host/bcm2835.c -+++ b/drivers/mmc/host/bcm2835.c -@@ -1457,6 +1457,9 @@ static int bcm2835_remove(struct platform_device *pdev) - cancel_work_sync(&host->dma_work); - cancel_delayed_work_sync(&host->timeout_work); - -+ if (host->dma_chan_rxtx) -+ dma_release_channel(host->dma_chan_rxtx); -+ - mmc_free_host(host->mmc); - platform_set_drvdata(pdev, NULL); - - -From patchwork Sun Nov 11 20:23:56 2018 -Content-Type: text/plain; charset="utf-8" -MIME-Version: 1.0 -Content-Transfer-Encoding: 7bit -X-Patchwork-Submitter: Stefan Wahren -X-Patchwork-Id: 10677851 -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 9E68D14BD - for ; 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Sun, 11 Nov 2018 20:24:53 +0000 -Received: from localhost.localdomain ([37.4.249.153]) by - mrelayeu.kundenserver.de (mreue012 [212.227.15.167]) with ESMTPSA (Nemesis) - id 1MvsyF-1fX0UR1Q9v-00ssSz; Sun, 11 Nov 2018 21:24:32 +0100 -From: Stefan Wahren -To: Eric Anholt , Florian Fainelli , - Ulf Hansson -Subject: [PATCH V2 4/7] mmc: bcm2835: Avoid possible races on data requests -Date: Sun, 11 Nov 2018 21:23:56 +0100 -Message-Id: <1541967839-2847-5-git-send-email-stefan.wahren@i2se.com> -X-Mailer: git-send-email 2.7.4 -In-Reply-To: <1541967839-2847-1-git-send-email-stefan.wahren@i2se.com> -References: <1541967839-2847-1-git-send-email-stefan.wahren@i2se.com> -X-Provags-ID: V03:K1:ZLc6V0DmkpQIP44hYwa3HseRh7CvRoA9oKdzKs8yIsk8165B4Wj - xh/v/qDrvpHbc6Mo7+ESlJoA7iV2QBpKIYXkV+l+LxP1hUGn0iO44fmLP2qBvLJtZvx/Ojh - 06wOufM/u9ZWw0FVd6z87NbwhQC+r0Hdx+GWumlgWYq9lppFAMYe+6pIqLKFwesssADK3OS - 0MJwlz/he/7bB9DxhEcnw== -X-UI-Out-Filterresults: notjunk:1;V01:K0:lLFqbCq1JEc=:4dOYlMJrif5X850MHJ4IKv - SsggGIkb+7xoay8mJWO2ixu2r0n0ZJp/p5GCqVWB8a8GEJ5AXj04izOlxindxB0yxAXLfOtEY - +MADRnLwkXLIyvJ52YOhbudb4v+KVS8LnZmdnl+7dYi8ILPPI8K1YyOA0Atm0Sc1zKCyzyrb+ - HXYtIBmpCCeoXAn6iF9KtPShMQN90JkCkhQDCTtvuHKB4+XasgiJQqwLvDbMhUTfAiHKRbT6A - Ret67MCTcoBZMJ8Lv5IVe96pGyj6/IftFJwD456d201u/qlGUEcsrQlXoVDZyYQINncWlmCe9 - nhfpQF8UozqPck8kat7pUYNcoUck660Ob7tS+eW6IQxtgNKjjkiaYgE0VlcnBWXS46anJouuq - rFWawTXHFsLU6SVpIIVC5wCmDIOpgnWg2E5Dg6O3JtD4JPpSw9V3hM8L34Ii6DfWsvPAlJ46O - kCFiB/zfxUDXTLqed/nM9eufpPmQGlkRVnwoBNh18c7patPv1MzAU94KuN0ciq4QgoPk400rI - 5AOu/Eb9ck9CqDcZnI9x3PGjBoRgf0O/cvmqP67kgt1u17W9OEGaqHaEkXh+xLTDICpauVWMp - kOXBFyQ2SWK4jxt/C1uNgcghWG4r8UDxx9LFHZA0Ut2oGO2bW8qkpXlRBI11lvMuK3P+jSSXu - 8ZdD0IA/lvl6PXMOo1Zs7F+mho7h8yoB6XvVBOO8Mh8VonIPfeFZAQOrF/WP5SI3te/r5jk8v - wI7Eoz+v7SK4TMhwvTrIv+Q6zGYykDWUFqpehDe/ZhMpdl/XnD0H+Z9jGWgv6Wyi6Rmwc2JEJ - 6Xq84VFzxbb0yps5VJcK6at8C/JGA== -X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 -X-CRM114-CacheID: sfid-20181111_202451_956461_704341B1 -X-CRM114-Status: GOOD ( 11.96 ) -X-BeenThere: linux-arm-kernel@lists.infradead.org -X-Mailman-Version: 2.1.21 -Precedence: list -List-Id: -List-Unsubscribe: - , - -List-Archive: -List-Post: -List-Help: -List-Subscribe: - , - -Cc: Stefan Wahren , - Phil Elwell , - linux-mmc@vger.kernel.org, linux-rpi-kernel@lists.infradead.org, - Michal Suchanek , linux-arm-kernel@lists.infradead.org -MIME-Version: 1.0 -Content-Type: text/plain; charset="us-ascii" -Sender: "linux-arm-kernel" -Errors-To: - linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org -X-Virus-Scanned: ClamAV using ClamSMTP - -There are two accesses on the data requests which are not protected by -the mutex. So fix this accordingly. - -Signed-off-by: Stefan Wahren ---- - drivers/mmc/host/bcm2835.c | 10 ++++++---- - 1 file changed, 6 insertions(+), 4 deletions(-) - -diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c -index 45724ef..1c60798 100644 ---- a/drivers/mmc/host/bcm2835.c -+++ b/drivers/mmc/host/bcm2835.c -@@ -1064,10 +1064,12 @@ static void bcm2835_dma_complete_work(struct work_struct *work) - { - struct bcm2835_host *host = - container_of(work, struct bcm2835_host, dma_work); -- struct mmc_data *data = host->data; -+ struct mmc_data *data; - - mutex_lock(&host->mutex); - -+ data = host->data; -+ - if (host->dma_chan) { - dma_unmap_sg(host->dma_chan->device->dev, - data->sg, data->sg_len, -@@ -1192,9 +1194,6 @@ static void bcm2835_request(struct mmc_host *mmc, struct mmc_request *mrq) - return; - } - -- if (host->use_dma && mrq->data && (mrq->data->blocks > PIO_THRESHOLD)) -- bcm2835_prepare_dma(host, mrq->data); -- - mutex_lock(&host->mutex); - - WARN_ON(host->mrq); -@@ -1218,6 +1217,9 @@ static void bcm2835_request(struct mmc_host *mmc, struct mmc_request *mrq) - return; - } - -+ if (host->use_dma && mrq->data && (mrq->data->blocks > PIO_THRESHOLD)) -+ bcm2835_prepare_dma(host, mrq->data); -+ - host->use_sbc = !!mrq->sbc && host->mrq->data && - (host->mrq->data->flags & MMC_DATA_READ); - if (host->use_sbc) { - -From patchwork Sun Nov 11 20:23:57 2018 -Content-Type: text/plain; charset="utf-8" -MIME-Version: 1.0 -Content-Transfer-Encoding: 7bit -X-Patchwork-Submitter: Stefan Wahren -X-Patchwork-Id: 10677855 -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 B72A114BD - for ; - Sun, 11 Nov 2018 20:25:55 +0000 (UTC) -Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) - by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A8FBF2969C - for ; - Sun, 11 Nov 2018 20:25:55 +0000 (UTC) -Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) - id 9BA4C296F9; 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charset="us-ascii" -Sender: "linux-arm-kernel" -Errors-To: - linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org -X-Virus-Scanned: ClamAV using ClamSMTP - -There are two variables len within bcm2835_prepare_dma. So rename the result -of dma_map_sg to sg_len. While we are at this add a bail out to simplify the -following change. - -Signed-off-by: Stefan Wahren ---- - drivers/mmc/host/bcm2835.c | 16 +++++++--------- - 1 file changed, 7 insertions(+), 9 deletions(-) - -diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c -index 2c7589f..c42bdaa 100644 ---- a/drivers/mmc/host/bcm2835.c -+++ b/drivers/mmc/host/bcm2835.c -@@ -464,7 +464,7 @@ static void bcm2835_transfer_pio(struct bcm2835_host *host) - static - void bcm2835_prepare_dma(struct bcm2835_host *host, struct mmc_data *data) - { -- int len, dir_data, dir_slave; -+ int sg_len, dir_data, dir_slave; - struct dma_async_tx_descriptor *desc = NULL; - struct dma_chan *dma_chan; - -@@ -510,15 +510,13 @@ void bcm2835_prepare_dma(struct bcm2835_host *host, struct mmc_data *data) - &host->dma_cfg_rx : - &host->dma_cfg_tx); - -- len = dma_map_sg(dma_chan->device->dev, data->sg, data->sg_len, -- dir_data); -+ sg_len = dma_map_sg(dma_chan->device->dev, data->sg, data->sg_len, -+ dir_data); -+ if (!sg_len) -+ return; - -- if (len > 0) { -- desc = dmaengine_prep_slave_sg(dma_chan, data->sg, -- len, dir_slave, -- DMA_PREP_INTERRUPT | -- DMA_CTRL_ACK); -- } -+ desc = dmaengine_prep_slave_sg(dma_chan, data->sg, sg_len, dir_slave, -+ DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - - if (desc) { - desc->callback = bcm2835_dma_complete; - -From patchwork Sun Nov 11 20:23:59 2018 -Content-Type: text/plain; charset="utf-8" -MIME-Version: 1.0 -Content-Transfer-Encoding: 7bit -X-Patchwork-Submitter: Stefan Wahren -X-Patchwork-Id: 10677863 -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 3D4A8139B - for ; - Sun, 11 Nov 2018 20:27:08 +0000 (UTC) -Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) - by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2EABA296EB - for ; - Sun, 11 Nov 2018 20:27:08 +0000 (UTC) -Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) - id 1FAB5296FF; 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charset="us-ascii" -Sender: "linux-arm-kernel" -Errors-To: - linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org -X-Virus-Scanned: ClamAV using ClamSMTP - -In case dmaengine_prep_slave_sg fails we need to call dma_unmap_sg. - -Signed-off-by: Stefan Wahren -Acked-by: Eric Anholt ---- - drivers/mmc/host/bcm2835.c | 15 +++++++++------ - 1 file changed, 9 insertions(+), 6 deletions(-) - -diff --git a/drivers/mmc/host/bcm2835.c b/drivers/mmc/host/bcm2835.c -index c42bdaa..82e4b08 100644 ---- a/drivers/mmc/host/bcm2835.c -+++ b/drivers/mmc/host/bcm2835.c -@@ -518,13 +518,16 @@ void bcm2835_prepare_dma(struct bcm2835_host *host, struct mmc_data *data) - desc = dmaengine_prep_slave_sg(dma_chan, data->sg, sg_len, dir_slave, - DMA_PREP_INTERRUPT | DMA_CTRL_ACK); - -- if (desc) { -- desc->callback = bcm2835_dma_complete; -- desc->callback_param = host; -- host->dma_desc = desc; -- host->dma_chan = dma_chan; -- host->dma_dir = dir_data; -+ if (!desc) { -+ dma_unmap_sg(dma_chan->device->dev, data->sg, sg_len, dir_data); -+ return; - } -+ -+ desc->callback = bcm2835_dma_complete; -+ desc->callback_param = host; -+ host->dma_desc = desc; -+ host->dma_chan = dma_chan; -+ host->dma_dir = dir_data; - } - - static void bcm2835_start_dma(struct bcm2835_host *host) -- cgit