From 10e1d9cabd33f74275165f443b8ee576ebe49027 Mon Sep 17 00:00:00 2001 From: Ulf Hansson Date: Tue, 24 Mar 2020 19:07:37 +0100 Subject: [PATCH] mmc: sdhci-omap: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY BugLink: https://bugs.launchpad.net/bugs/1870142 [ Upstream commit 055e04830d4544c57f2a5192a26c9e25915c29c0 ] It has turned out that the sdhci-omap controller requires the R1B response, for commands that has this response associated with them. So, converting from an R1B to an R1 response for a CMD6 for example, leads to problems with the HW busy detection support. Fix this by informing the mmc core about the requirement, via setting the host cap, MMC_CAP_NEED_RSP_BUSY. Reported-by: Naresh Kamboju Reported-by: Anders Roxell Reported-by: Faiz Abbas Cc: Tested-by: Anders Roxell Tested-by: Faiz Abbas Signed-off-by: Ulf Hansson Signed-off-by: Sasha Levin Signed-off-by: Kamal Mostafa --- drivers/mmc/host/sdhci-omap.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mmc/host/sdhci-omap.c b/drivers/mmc/host/sdhci-omap.c index 083e7e053c95..d3135249b2e4 100644 --- a/drivers/mmc/host/sdhci-omap.c +++ b/drivers/mmc/host/sdhci-omap.c @@ -1134,6 +1134,9 @@ static int sdhci_omap_probe(struct platform_device *pdev) host->mmc_host_ops.execute_tuning = sdhci_omap_execute_tuning; host->mmc_host_ops.enable_sdio_irq = sdhci_omap_enable_sdio_irq; + /* R1B responses is required to properly manage HW busy detection. */ + mmc->caps |= MMC_CAP_NEED_RSP_BUSY; + ret = sdhci_setup_host(host); if (ret) goto err_put_sync; -- 2.39.5