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authorShawn Lin <shawn.lin@rock-chips.com>2015-08-12 08:08:32 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2015-08-27 15:50:52 +0300
commitb5b4ff0a633910b2b9dca7915fd6ab17aa10dc3e (patch)
treeaf1a8bee55a6f5477572250bbf916aef37a6e049 /drivers/mmc
parente31e67cf2578bd05e99afabb22403542306d6bed (diff)
downloadlinux-b5b4ff0a633910b2b9dca7915fd6ab17aa10dc3e.tar.xz
mmc: block: skip trim for some kingston eMMCs
For some mass production of kingston eMMCs which adopt Phison's firmware will meet an unrecoverable data conrruption occasionally if performing trim due to a firmware bug confirmed by vendor. We found it on Intel-C3230RK platform. So we add fixup of broken trim for it. Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/card/block.c10
-rw-r--r--drivers/mmc/core/core.c3
2 files changed, 12 insertions, 1 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index a58287e574cc..c742cfd7674e 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -2389,6 +2389,7 @@ force_ro_fail:
#define CID_MANFID_TOSHIBA 0x11
#define CID_MANFID_MICRON 0x13
#define CID_MANFID_SAMSUNG 0x15
+#define CID_MANFID_KINGSTON 0x70
static const struct mmc_fixup blk_fixups[] =
{
@@ -2451,6 +2452,15 @@ static const struct mmc_fixup blk_fixups[] =
MMC_FIXUP("VZL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc,
MMC_QUIRK_SEC_ERASE_TRIM_BROKEN),
+ /*
+ * On Some Kingston eMMCs, performing trim can result in
+ * unrecoverable data conrruption occasionally due to a firmware bug.
+ */
+ MMC_FIXUP("V10008", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc,
+ MMC_QUIRK_TRIM_BROKEN),
+ MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc,
+ MMC_QUIRK_TRIM_BROKEN),
+
END_FIXUP
};
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c
index 57edb2a9bb04..664b61729fa9 100644
--- a/drivers/mmc/core/core.c
+++ b/drivers/mmc/core/core.c
@@ -2250,7 +2250,8 @@ EXPORT_SYMBOL(mmc_can_erase);
int mmc_can_trim(struct mmc_card *card)
{
- if (card->ext_csd.sec_feature_support & EXT_CSD_SEC_GB_CL_EN)
+ if ((card->ext_csd.sec_feature_support & EXT_CSD_SEC_GB_CL_EN) &&
+ (!(card->quirks & MMC_QUIRK_TRIM_BROKEN)))
return 1;
return 0;
}