From 9d8cb58691f85cef687512262acb2c7109ee4868 Mon Sep 17 00:00:00 2001
From: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Date: Mon, 20 Apr 2020 11:50:23 +0530
Subject: [PATCH] mmc: sdhci-msm: Enable host capabilities pertains to R1b response
Git-commit: 9d8cb58691f85cef687512262acb2c7109ee4868
Patch-mainline: v5.7-rc4
References: git-fixes
MSM sd host controller is capable of HW busy detection of device busy
signaling over DAT0 line. And it requires the R1B response for commands
that have this response associated with them.
So set the below two host capabilities for qcom SDHC.
- MMC_CAP_WAIT_WHILE_BUSY
- MMC_CAP_NEED_RSP_BUSY
Recent development of the mmc core in regards to this, revealed this as
being a potential bug, hence the stable tag.
Cc: <stable@vger.kernel.org> # v4.19+
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@codeaurora.org>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Link: https://lore.kernel.org/r/1587363626-20413-2-git-send-email-vbadigan@codeaurora.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/mmc/host/sdhci-msm.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
index 09ff7315eb5e..a8bcb3f16aa4 100644
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -2087,6 +2087,8 @@ static int sdhci_msm_probe(struct platform_device *pdev)
goto clk_disable;
}
+ msm_host->mmc->caps |= MMC_CAP_WAIT_WHILE_BUSY | MMC_CAP_NEED_RSP_BUSY;
+
pm_runtime_get_noresume(&pdev->dev);
pm_runtime_set_active(&pdev->dev);
pm_runtime_enable(&pdev->dev);
--
2.16.4