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

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@gmail.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20230530213259.1776512-1-robimarko@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h
index 29b9497936df99d73e293babf7117d4ca53da2ce..77caa0c903f8f908d0e725785ff892cc79f26dc9 100644 (file)
--- a/drivers/mmc/core/quirks.h
+++ b/drivers/mmc/core/quirks.h
@@ -100,6 +100,13 @@ static const struct mmc_fixup __maybe_unused mmc_blk_fixups[] = {
        MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc,
                  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
         */