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[158.174.22.210]) by smtp.gmail.com with ESMTPSA id s10sm11029858ljp.87.2020.03.24.11.08.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 24 Mar 2020 11:08:12 -0700 (PDT) From: Ulf Hansson To: Greg Kroah-Hartman , Sasha Levin , stable@vger.kernel.org Cc: linux-mmc@vger.kernel.org, Ulf Hansson , Sowjanya Komatineni , Faiz Abbas , Anders Roxell , Naresh Kamboju , Bitan Biswas , Peter Geis Subject: [PATCH 4.19.113 5/5] mmc: sdhci-tegra: Fix busy detection by enabling MMC_CAP_NEED_RSP_BUSY Date: Tue, 24 Mar 2020 19:08:00 +0100 Message-Id: <20200324180800.28953-6-ulf.hansson@linaro.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200324180800.28953-1-ulf.hansson@linaro.org> References: <20200324180800.28953-1-ulf.hansson@linaro.org> MIME-Version: 1.0 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org [ Upstream commit d2f8bfa4bff5028bc40ed56b4497c32e05b0178f ] It has turned out that the sdhci-tegra 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: Bitan Biswas Reported-by: Peter Geis Suggested-by: Sowjanya Komatineni Cc: Tested-by: Sowjanya Komatineni Tested-By: Peter Geis Signed-off-by: Ulf Hansson --- drivers/mmc/host/sdhci-tegra.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index 14d749a0de95..27bdf6d499bd 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -502,6 +502,9 @@ static int sdhci_tegra_probe(struct platform_device *pdev) if (tegra_host->soc_data->nvquirks & NVQUIRK_ENABLE_DDR50) host->mmc->caps |= MMC_CAP_1_8V_DDR; + /* R1B responses is required to properly manage HW busy detection. */ + host->mmc->caps |= MMC_CAP_NEED_RSP_BUSY; + tegra_host->power_gpio = devm_gpiod_get_optional(&pdev->dev, "power", GPIOD_OUT_HIGH); if (IS_ERR(tegra_host->power_gpio)) {