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
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.
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
13 Disabling TRIM makes the error go away, so lets add a quirk for this eMMC
16 Signed-off-by: Robert Marko <robimarko@gmail.com>
18 drivers/mmc/core/quirks.h | 7 +++++++
19 1 file changed, 7 insertions(+)
21 --- a/drivers/mmc/core/quirks.h
22 +++ b/drivers/mmc/core/quirks.h
23 @@ -101,6 +101,13 @@ static const struct mmc_fixup __maybe_un
24 MMC_QUIRK_TRIM_BROKEN),
27 + * Micron MTFC4GACAJCN-1M advertises TRIM but it does not seems to
28 + * support being used to offload WRITE_ZEROES.
30 + MMC_FIXUP("Q2J54A", CID_MANFID_MICRON, 0x014e, add_quirk_mmc,
31 + MMC_QUIRK_TRIM_BROKEN),
34 * Some SD cards reports discard support while they don't
36 MMC_FIXUP(CID_NAME_ANY, CID_MANFID_SANDISK_SD, 0x5344, add_quirk_sd,