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| author | Ian Chen <ian.cy.chen@samsung.com> | 2012-08-29 15:05:36 +0900 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2012-09-19 15:04:40 +0100 |
| commit | 3b75588b26cc22a16ff812e38ba7720b3e2d9b38 (patch) | |
| tree | 8bd1d9a94ed67cba0fd65d3705de6bfd731440f0 /drivers/mmc | |
| parent | a0d9ef18e6578ebce77372896fa8fb1ba19e1612 (diff) | |
| download | kernel_samsung_smdk4412-3b75588b26cc22a16ff812e38ba7720b3e2d9b38.zip kernel_samsung_smdk4412-3b75588b26cc22a16ff812e38ba7720b3e2d9b38.tar.gz kernel_samsung_smdk4412-3b75588b26cc22a16ff812e38ba7720b3e2d9b38.tar.bz2 | |
mmc: card: Skip secure erase on MoviNAND; causes unrecoverable corruption.
commit 3550ccdb9d8d350e526b809bf3dd92b550a74fe1 upstream.
For several MoviNAND eMMC parts, there are known issues with secure
erase and secure trim. For these specific MoviNAND devices, we skip
these operations.
Specifically, there is a bug in the eMMC firmware that causes
unrecoverable corruption when the MMC is erased with MMC_CAP_ERASE
enabled.
References:
http://forum.xda-developers.com/showthread.php?t=1644364
https://plus.google.com/111398485184813224730/posts/21pTYfTsCkB#111398485184813224730/posts/21pTYfTsCkB
Signed-off-by: Ian Chen <ian.cy.chen@samsung.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/card/block.c | 27 |
1 files changed, 26 insertions, 1 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 34416d4..74793af 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -1339,7 +1339,8 @@ static int mmc_blk_issue_rq(struct mmc_queue *mq, struct request *req) /* complete ongoing async transfer before issuing discard */ if (card->host->areq) mmc_blk_issue_rw_rq(mq, NULL); - if (req->cmd_flags & REQ_SECURE) + if (req->cmd_flags & REQ_SECURE && + !(card->quirks & MMC_QUIRK_SEC_ERASE_TRIM_BROKEN)) ret = mmc_blk_issue_secdiscard_rq(mq, req); else ret = mmc_blk_issue_discard_rq(mq, req); @@ -1614,6 +1615,8 @@ static int mmc_add_disk(struct mmc_blk_data *md) return ret; } +#define CID_MANFID_SAMSUNG 0x15 + static const struct mmc_fixup blk_fixups[] = { MMC_FIXUP("SEM02G", 0x2, 0x100, add_quirk, MMC_QUIRK_INAND_CMD38), @@ -1644,6 +1647,28 @@ static const struct mmc_fixup blk_fixups[] = MMC_FIXUP(CID_NAME_ANY, 0x13, 0x200, add_quirk_mmc, MMC_QUIRK_LONG_READ_TIME), + /* + * On these Samsung MoviNAND parts, performing secure erase or + * secure trim can result in unrecoverable corruption due to a + * firmware bug. + */ + MMC_FIXUP("M8G2FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, + MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), + MMC_FIXUP("MAG4FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, + MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), + MMC_FIXUP("MBG8FA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, + MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), + MMC_FIXUP("MCGAFA", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, + MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), + MMC_FIXUP("VAL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, + MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), + MMC_FIXUP("VYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, + MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), + MMC_FIXUP("KYL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, + MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), + MMC_FIXUP("VZL00M", CID_MANFID_SAMSUNG, CID_OEMID_ANY, add_quirk_mmc, + MMC_QUIRK_SEC_ERASE_TRIM_BROKEN), + END_FIXUP }; |