This is a note to let you know that I've just added the patch titled
mmc: sdhci-msm: Enable host capabilities pertains to R1b response
to the 5.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mmc-sdhci-msm-enable-host-capabilities-pertains-to-r1b-response.patch
and it can be found in the queue-5.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 9d8cb58691f85cef687512262acb2c7109ee4868 Mon Sep 17 00:00:00 2001
From: Veerabhadrarao Badiganti <vbadigan@xxxxxxxxxxxxxx>
Date: Mon, 20 Apr 2020 11:50:23 +0530
Subject: mmc: sdhci-msm: Enable host capabilities pertains to R1b response
From: Veerabhadrarao Badiganti <vbadigan@xxxxxxxxxxxxxx>
commit 9d8cb58691f85cef687512262acb2c7109ee4868 upstream.
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@xxxxxxxxxxxxxxx> # v4.19+
Signed-off-by: Veerabhadrarao Badiganti <vbadigan@xxxxxxxxxxxxxx>
Acked-by: Adrian Hunter <adrian.hunter@xxxxxxxxx>
Link: https://lore.kernel.org/r/1587363626-20413-2-git-send-email-vbadigan@xxxxxxxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/mmc/host/sdhci-msm.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/mmc/host/sdhci-msm.c
+++ b/drivers/mmc/host/sdhci-msm.c
@@ -2068,6 +2068,8 @@ static int sdhci_msm_probe(struct platfo
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);
Patches currently in stable-queue which might be from vbadigan@xxxxxxxxxxxxxx are
queue-5.6/mmc-sdhci-msm-enable-host-capabilities-pertains-to-r1b-response.patch
