target/linux/qualcommax/patches-6.1/0132-mmc-core-disable-TRIM-on-Micron-MTFC4GACAJCN-1M.patch

   1 From f5aaf6669bd4f1f0218dd7fd5dc90941267ad860 Mon Sep 17 00:00:00 2001
   2 From: Robert Marko <robimarko@gmail.com>
   3 Date: Tue, 30 May 2023 23:26:30 +0200
   4 Subject: [PATCH] mmc: core: disable TRIM on Micron MTFC4GACAJCN-1M
   5
   6 It seems that Micron MTFC4GACAJCN-1M despite advertising TRIM support does
   7 not work when the core is trying to use REQ_OP_WRITE_ZEROES.
   8
   9 We are seeing the following errors in OpenWrt under 6.1 on Qnap Qhora 301W
  10 that we did not previously have and tracked it down to REQ_OP_WRITE_ZEROES:
  11 [   18.085950] I/O error, dev loop0, sector 596 op 0x9:(WRITE_ZEROES) flags 0x800 phys_seg 0 prio class 2
  12
  13 Disabling TRIM makes the error go away, so lets add a quirk for this eMMC
  14 to disable TRIM.
  15
  16 Signed-off-by: Robert Marko <robimarko@gmail.com>
  17 ---
  18  drivers/mmc/core/quirks.h | 7 +++++++
  19  1 file changed, 7 insertions(+)
  20
  21 --- a/drivers/mmc/core/quirks.h
  22 +++ b/drivers/mmc/core/quirks.h
  23 @@ -124,6 +124,13 @@ static const struct mmc_fixup __maybe_un
  24                   MMC_QUIRK_TRIM_BROKEN),
  25
  26         /*
  27 +        * Micron MTFC4GACAJCN-1M advertises TRIM but it does not seems to
  28 +        * support being used to offload WRITE_ZEROES.
  29 +        */
  30 +       MMC_FIXUP("Q2J54A", CID_MANFID_MICRON, 0x014e, add_quirk_mmc,
  31 +                 MMC_QUIRK_TRIM_BROKEN),
  32 +
  33 +       /*
  34          * Some SD cards reports discard support while they don't
  35          */
  36         MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344, add_quirk_sd,