Patch "mmc: core: disable TRIM on Micron MTFC4GACAJCN-1M" has been added to the 6.4-stable tree

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This is a note to let you know that I've just added the patch titled

    mmc: core: disable TRIM on Micron MTFC4GACAJCN-1M

to the 6.4-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-core-disable-trim-on-micron-mtfc4gacajcn-1m.patch
and it can be found in the queue-6.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From dbfbddcddcebc9ce8a08757708d4e4a99d238e44 Mon Sep 17 00:00:00 2001
From: Robert Marko <robimarko@xxxxxxxxx>
Date: Tue, 30 May 2023 23:32:59 +0200
Subject: mmc: core: disable TRIM on Micron MTFC4GACAJCN-1M

From: Robert Marko <robimarko@xxxxxxxxx>

commit dbfbddcddcebc9ce8a08757708d4e4a99d238e44 upstream.

It seems that Micron MTFC4GACAJCN-1M despite advertising TRIM support does
not work when the core is trying to use REQ_OP_WRITE_ZEROES.

We are seeing the following errors in OpenWrt under 6.1 on Qnap Qhora 301W
that we did not previously have and tracked it down to REQ_OP_WRITE_ZEROES:
[   18.085950] I/O error, dev loop0, sector 596 op 0x9:(WRITE_ZEROES) flags 0x800 phys_seg 0 prio class 2

Disabling TRIM makes the error go away, so lets add a quirk for this eMMC
to disable TRIM.

Signed-off-by: Robert Marko <robimarko@xxxxxxxxx>
Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/r/20230530213259.1776512-1-robimarko@xxxxxxxxx
Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/mmc/core/quirks.h |    7 +++++++
 1 file changed, 7 insertions(+)

--- a/drivers/mmc/core/quirks.h
+++ b/drivers/mmc/core/quirks.h
@@ -117,6 +117,13 @@ static const struct mmc_fixup __maybe_un
 		  MMC_QUIRK_TRIM_BROKEN),
 
 	/*
+	 * Micron MTFC4GACAJCN-1M advertises TRIM but it does not seems to
+	 * support being used to offload WRITE_ZEROES.
+	 */
+	MMC_FIXUP("Q2J54A", CID_MANFID_MICRON, 0x014e, add_quirk_mmc,
+		  MMC_QUIRK_TRIM_BROKEN),
+
+	/*
 	 * Some SD cards reports discard support while they don't
 	 */
 	MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344, add_quirk_sd,


Patches currently in stable-queue which might be from robimarko@xxxxxxxxx are

queue-6.4/mmc-core-disable-trim-on-kingston-emmc04g-m627.patch
queue-6.4/clk-qcom-ipq6018-fix-networking-resets.patch
queue-6.4/mmc-core-disable-trim-on-micron-mtfc4gacajcn-1m.patch



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