From d96dc68e9890b121665bfe44599c98ada044a523 Mon Sep 17 00:00:00 2001 From: Dan Carpenter Date: Wed, 15 May 2019 12:35:14 +0300 Subject: mmc: tegra: Fix a warning message The WARN_ON() macro takes a condition, not a warning message. I've changed this to use WARN(1, "msg... Fixes: ea8fc5953e8b ("mmc: tegra: update hw tuning process") Signed-off-by: Dan Carpenter Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-tegra.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mmc/host') diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index f608417ae967..10d7aaf68bab 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -865,7 +865,7 @@ static void tegra_sdhci_tap_correction(struct sdhci_host *host, u8 thd_up, } if (!first_fail) { - WARN_ON("no edge detected, continue with hw tuned delay.\n"); + WARN(1, "no edge detected, continue with hw tuned delay.\n"); } else if (first_pass) { /* set tap location at fixed tap relative to the first edge */ edge1 = first_fail_tap + (first_pass_tap - first_fail_tap) / 2; -- cgit v1.2.3 From 51b72656bb39fdcb8f3174f4007bcc83ad1d275f Mon Sep 17 00:00:00 2001 From: Takeshi Saito Date: Wed, 15 May 2019 20:23:46 +0200 Subject: mmc: tmio: fix SCC error handling to avoid false positive CRC error If an SCC error occurs during a read/write command execution, a false positive CRC error message is output. mmcblk0: response CRC error sending r/w cmd command, card status 0x900 check_scc_error() checks SCC_RVSREQ.RVSERR bit. RVSERR detects a correction error in the next (up or down) delay tap position. However, since the command is successful, only retuning needs to be executed. This has been confirmed by HW engineers. Thus, on SCC error, set retuning flag instead of setting an error code. Fixes: b85fb0a1c8ae ("mmc: tmio: Fix SCC error detection") Signed-off-by: Takeshi Saito [wsa: updated comment and commit message, removed some braces] Signed-off-by: Wolfram Sang Reviewed-by: Simon Horman Reviewed-by: Yoshihiro Shimoda Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson --- drivers/mmc/host/tmio_mmc_core.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'drivers/mmc/host') diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c index 130b91cb0f8a..84cb7d2aacdf 100644 --- a/drivers/mmc/host/tmio_mmc_core.c +++ b/drivers/mmc/host/tmio_mmc_core.c @@ -842,8 +842,9 @@ static void tmio_mmc_finish_request(struct tmio_mmc_host *host) if (mrq->cmd->error || (mrq->data && mrq->data->error)) tmio_mmc_abort_dma(host); + /* SCC error means retune, but executed command was still successful */ if (host->check_scc_error && host->check_scc_error(host)) - mrq->cmd->error = -EILSEQ; + mmc_retune_needed(host->mmc); /* If SET_BLOCK_COUNT, continue with main command */ if (host->mrq && !mrq->cmd->error) { -- cgit v1.2.3 From c2c1e63a80d6e9bb9981fc958cd2dac5346212be Mon Sep 17 00:00:00 2001 From: Jerome Brunet Date: Thu, 23 May 2019 16:59:50 +0200 Subject: mmc: meson-gx: fix irq ack While cleaning the ISR of the meson-gx and acking only raised irqs, the ack of the irq was moved at the very last stage of the function. This was stable during the initial tests but it triggered issues with hs200, under specific loads (like booting android). Acking the irqs after calling the mmc_request_done() causes the problem. Moving the ack back to the original place solves the issue. Since the irq is edge triggered, it does not hurt to ack irq even earlier, so let's do it early in the ISR. Fixes: 9c5fdb07a28d ("mmc: meson-gx: ack only raised irq") Tested-by: Neil Armstrong Tested-by: Kevin Hilman Signed-off-by: Jerome Brunet Reviewed-by: Kevin Hilman Tested-by: Brad Harper Signed-off-by: Ulf Hansson --- drivers/mmc/host/meson-gx-mmc.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) (limited to 'drivers/mmc/host') diff --git a/drivers/mmc/host/meson-gx-mmc.c b/drivers/mmc/host/meson-gx-mmc.c index c5a8af4ca76b..5582561586b4 100644 --- a/drivers/mmc/host/meson-gx-mmc.c +++ b/drivers/mmc/host/meson-gx-mmc.c @@ -859,6 +859,9 @@ static irqreturn_t meson_mmc_irq(int irq, void *dev_id) if (WARN_ON(!host) || WARN_ON(!host->cmd)) return IRQ_NONE; + /* ack all raised interrupts */ + writel(status, host->regs + SD_EMMC_STATUS); + cmd = host->cmd; data = cmd->data; cmd->error = 0; @@ -905,9 +908,6 @@ out: if (ret == IRQ_HANDLED) meson_mmc_request_done(host->mmc, cmd->mrq); - /* ack all raised interrupts */ - writel(status, host->regs + SD_EMMC_STATUS); - return ret; } -- cgit v1.2.3 From 89f3c365f3e113d087f105c3acbbb5a71eee84e3 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Mon, 27 May 2019 14:45:55 +0300 Subject: mmc: sdhci: Fix SDIO IRQ thread deadlock Since commit c07a48c26519 ("mmc: sdhci: Remove finish_tasklet"), the IRQ thread might be used to complete requests, but the IRQ thread is also used to process SDIO card interrupts. This can cause a deadlock when the SDIO processing tries to access the card since that would also require the IRQ thread. Change SDHCI to use sdio_signal_irq() to schedule a work item instead. That also requires implementing the ->ack_sdio_irq() mmc host op. Signed-off-by: Adrian Hunter Fixes: c07a48c26519 ("mmc: sdhci: Remove finish_tasklet") Reported-by: Brian Masney Tested-by: Brian Masney Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci.c | 24 +++++++++++++----------- 1 file changed, 13 insertions(+), 11 deletions(-) (limited to 'drivers/mmc/host') diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c index 97158344b862..0cd5f2ce98df 100644 --- a/drivers/mmc/host/sdhci.c +++ b/drivers/mmc/host/sdhci.c @@ -2137,6 +2137,17 @@ void sdhci_enable_sdio_irq(struct mmc_host *mmc, int enable) } EXPORT_SYMBOL_GPL(sdhci_enable_sdio_irq); +static void sdhci_ack_sdio_irq(struct mmc_host *mmc) +{ + struct sdhci_host *host = mmc_priv(mmc); + unsigned long flags; + + spin_lock_irqsave(&host->lock, flags); + if (host->flags & SDHCI_SDIO_IRQ_ENABLED) + sdhci_enable_sdio_irq_nolock(host, true); + spin_unlock_irqrestore(&host->lock, flags); +} + int sdhci_start_signal_voltage_switch(struct mmc_host *mmc, struct mmc_ios *ios) { @@ -2585,6 +2596,7 @@ static const struct mmc_host_ops sdhci_ops = { .get_ro = sdhci_get_ro, .hw_reset = sdhci_hw_reset, .enable_sdio_irq = sdhci_enable_sdio_irq, + .ack_sdio_irq = sdhci_ack_sdio_irq, .start_signal_voltage_switch = sdhci_start_signal_voltage_switch, .prepare_hs400_tuning = sdhci_prepare_hs400_tuning, .execute_tuning = sdhci_execute_tuning, @@ -3087,8 +3099,7 @@ static irqreturn_t sdhci_irq(int irq, void *dev_id) if ((intmask & SDHCI_INT_CARD_INT) && (host->ier & SDHCI_INT_CARD_INT)) { sdhci_enable_sdio_irq_nolock(host, false); - host->thread_isr |= SDHCI_INT_CARD_INT; - result = IRQ_WAKE_THREAD; + sdio_signal_irq(host->mmc); } intmask &= ~(SDHCI_INT_CARD_INSERT | SDHCI_INT_CARD_REMOVE | @@ -3160,15 +3171,6 @@ static irqreturn_t sdhci_thread_irq(int irq, void *dev_id) mmc_detect_change(mmc, msecs_to_jiffies(200)); } - if (isr & SDHCI_INT_CARD_INT) { - sdio_run_irqs(host->mmc); - - spin_lock_irqsave(&host->lock, flags); - if (host->flags & SDHCI_SDIO_IRQ_ENABLED) - sdhci_enable_sdio_irq_nolock(host, true); - spin_unlock_irqrestore(&host->lock, flags); - } - return IRQ_HANDLED; } -- cgit v1.2.3 From 7397993145872c74871ab2aa7fa26a427144088a Mon Sep 17 00:00:00 2001 From: Faiz Abbas Date: Tue, 28 May 2019 15:29:26 +0530 Subject: mmc: sdhci_am654: Fix SLOTTYPE write In the call to regmap_update_bits() for SLOTTYPE, the mask and value fields are exchanged. Fix this. Signed-off-by: Faiz Abbas Fixes: 41fd4caeb00b ("mmc: sdhci_am654: Add Initial Support for AM654 SDHCI driver") Cc: stable@vger.kernel.org Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci_am654.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/mmc/host') diff --git a/drivers/mmc/host/sdhci_am654.c b/drivers/mmc/host/sdhci_am654.c index a91c0b45c48d..3222ea4d584d 100644 --- a/drivers/mmc/host/sdhci_am654.c +++ b/drivers/mmc/host/sdhci_am654.c @@ -231,7 +231,7 @@ static int sdhci_am654_init(struct sdhci_host *host) ctl_cfg_2 = SLOTTYPE_EMBEDDED; regmap_update_bits(sdhci_am654->base, CTL_CFG_2, - ctl_cfg_2, SLOTTYPE_MASK); + SLOTTYPE_MASK, ctl_cfg_2); return sdhci_add_host(host); } -- cgit v1.2.3