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The patches were generated from the RPi repo with the following command: git format-patch v6.6.34..rpi-6.1.y Some patches needed rebasing and, as usual, the applied and reverted, wireless drivers, Github workflows, READMEs and defconfigs patches were removed. Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
48 lines
1.7 KiB
Diff
48 lines
1.7 KiB
Diff
From 43730828eca754b4b527d79fc5a1d3ff50c50481 Mon Sep 17 00:00:00 2001
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From: Jonathan Bell <jonathan@raspberrypi.com>
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Date: Mon, 8 Apr 2024 16:09:52 +0100
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Subject: [PATCH 1019/1085] drivers: mmc: disable write-caching on Samsung 2023
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model year SD cards
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Samsung EVO Plus, Pro Plus and Evo Ultimate cards of this era appear to
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have a broken cache-flush implementation when operating in CQ mode.
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Unfortunately the cards seem to use a separate CID name string for every
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variant and capacity, so nobble the cache feature for this MANFID, OEMID
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and year. Turning this off seems to have negligible impact on
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random-write throughput in non-CQ mode.
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Signed-off-by: Jonathan Bell <jonathan@raspberrypi.com>
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---
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drivers/mmc/core/card.h | 1 +
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drivers/mmc/core/quirks.h | 8 ++++++++
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2 files changed, 9 insertions(+)
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--- a/drivers/mmc/core/card.h
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+++ b/drivers/mmc/core/card.h
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@@ -84,6 +84,7 @@ struct mmc_fixup {
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#define CID_MANFID_TOSHIBA 0x11
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#define CID_MANFID_MICRON 0x13
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#define CID_MANFID_SAMSUNG 0x15
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+#define CID_MANFID_SAMSUNG_SD 0x1b
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#define CID_MANFID_APACER 0x27
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#define CID_MANFID_KINGSTON 0x70
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#define CID_MANFID_HYNIX 0x90
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--- a/drivers/mmc/core/quirks.h
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+++ b/drivers/mmc/core/quirks.h
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@@ -25,6 +25,14 @@ static const struct mmc_fixup __maybe_un
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0, -1ull, SDIO_ANY_ID, SDIO_ANY_ID, add_quirk_sd,
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MMC_QUIRK_BROKEN_SD_CACHE, EXT_CSD_REV_ANY),
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+ /*
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+ * Samsung Pro Plus/EVO Plus/Pro Ultimate SD cards (2023) claim to cache
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+ * flush OK, but become unresponsive afterwards.
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+ */
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+ _FIXUP_EXT(CID_NAME_ANY, CID_MANFID_SAMSUNG_SD, 0x534d, 2023, CID_MONTH_ANY,
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+ 0, -1ull, SDIO_ANY_ID, SDIO_ANY_ID, add_quirk_sd,
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+ MMC_QUIRK_BROKEN_SD_CACHE, EXT_CSD_REV_ANY),
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+
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END_FIXUP
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};
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