This is a note to let you know that I've just added the patch titled
mmc: core: disable TRIM on Kingston EMMC04G-M627
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-kingston-emmc04g-m627.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 f1738a1f816233e6dfc2407f24a31d596643fd90 Mon Sep 17 00:00:00 2001
From: Robert Marko <robimarko@xxxxxxxxx>
Date: Mon, 19 Jun 2023 21:35:58 +0200
Subject: mmc: core: disable TRIM on Kingston EMMC04G-M627
From: Robert Marko <robimarko@xxxxxxxxx>
commit f1738a1f816233e6dfc2407f24a31d596643fd90 upstream.
It seems that Kingston EMMC04G-M627 despite advertising TRIM support does
not work when the core is trying to use REQ_OP_WRITE_ZEROES.
We are seeing I/O errors in OpenWrt under 6.1 on Zyxel NBG7815 that we did
not previously have and tracked it down to REQ_OP_WRITE_ZEROES.
Trying to use fstrim seems to also throw errors like:
[93010.835112] I/O error, dev loop0, sector 16902 op 0x3:(DISCARD) flags 0x800 phys_seg 1 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/20230619193621.437358-1-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
@@ -110,6 +110,13 @@ static const struct mmc_fixup __maybe_un
MMC_QUIRK_TRIM_BROKEN),
/*
+ * Kingston EMMC04G-M627 advertises TRIM but it does not seems to
+ * support being used to offload WRITE_ZEROES.
+ */
+ MMC_FIXUP("M62704", CID_MANFID_KINGSTON, 0x0100, 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
