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author | Justin M. Forbes <jforbes@fedoraproject.org> | 2019-02-12 17:16:34 -0600 |
---|---|---|
committer | Justin M. Forbes <jforbes@fedoraproject.org> | 2019-02-12 17:16:34 -0600 |
commit | 866d1567e2be7f57009ec053bb5f125b7d845f03 (patch) | |
tree | 90f7797525f69a93d1e8d2cb834748f3b89a8905 /bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch | |
parent | 9a04caa115e4adc84dbbc6996c66aa7e67455b51 (diff) | |
download | kernel-866d1567e2be7f57009ec053bb5f125b7d845f03.tar.gz kernel-866d1567e2be7f57009ec053bb5f125b7d845f03.tar.xz kernel-866d1567e2be7f57009ec053bb5f125b7d845f03.zip |
Linux v4.20.8
Diffstat (limited to 'bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch')
-rw-r--r-- | bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch | 328 |
1 files changed, 0 insertions, 328 deletions
diff --git a/bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch b/bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch index 8cea1b2d3..9975ee447 100644 --- a/bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch +++ b/bcm2835-mmc-Several-fixes-for-bcm2835-driver.patch @@ -1,331 +1,3 @@ -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 <stefan.wahren@i2se.com> -X-Patchwork-Id: 10677859 -Return-Path: - <linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org> -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 <patchwork-linux-arm@patchwork.kernel.org>; - Sun, 11 Nov 2018 20:26:27 +0000 (UTC) -Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) - by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8706B2969C - for <patchwork-linux-arm@patchwork.kernel.org>; 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charset="us-ascii" -Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> -Errors-To: - linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org -X-Virus-Scanned: ClamAV using ClamSMTP - -From: Michal Suchanek <msuchanek@suse.de> - -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 <msuchanek@suse.de> -Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> ---- - 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 <stefan.wahren@i2se.com> -X-Patchwork-Id: 10677841 -Return-Path: - <linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org> -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 <patchwork-linux-arm@patchwork.kernel.org>; - 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 <patchwork-linux-arm@patchwork.kernel.org>; - 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 <patchwork-linux-arm@patchwork.kernel.org>; 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charset="us-ascii" -Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org> -Errors-To: - linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org -X-Virus-Scanned: ClamAV using ClamSMTP - -From: Phil Elwell <phil@raspberrypi.org> - -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 <phil@raspberrypi.org> -Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> ---- - 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 |