From 26c97b6fb7d291f55e0e4a410d266d1355118ed9 Mon Sep 17 00:00:00 2001 From: Robert Marko 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 --- 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,