From 6f9708e5c110a88750b3ca3b7013679f149bb1b0 Mon Sep 17 00:00:00 2001 From: Robert Marko Date: Mon, 19 Jun 2023 21:35:58 +0200 Subject: [PATCH] mmc: core: disable TRIM on Kingston EMMC04G-M627 commit f1738a1f816233e6dfc2407f24a31d596643fd90 upstream. 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 Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20230619193621.437358-1-robimarko@gmail.com Signed-off-by: Ulf Hansson Signed-off-by: Greg Kroah-Hartman --- drivers/mmc/core/quirks.h | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/mmc/core/quirks.h b/drivers/mmc/core/quirks.h index c8c0f50a2076..3da45dd05666 100644 --- a/drivers/mmc/core/quirks.h +++ b/drivers/mmc/core/quirks.h @@ -99,6 +99,13 @@ 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), + /* + * 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 */