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- From 26c97b6fb7d291f55e0e4a410d266d1355118ed9 Mon Sep 17 00:00:00 2001
- From: Robert Marko <[email protected]>
- Date: Wed, 31 May 2023 20:21:26 +0200
- Subject: [PATCH] mmc: core: disable TRIM on Kingston EMMC04G-M627
- 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 <[email protected]>
- ---
- drivers/mmc/core/quirks.h | 7 +++++++
- 1 file changed, 7 insertions(+)
- --- a/drivers/mmc/core/quirks.h
- +++ b/drivers/mmc/core/quirks.h
- @@ -108,6 +108,13 @@ 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,
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