From 37edffff0fe980fa242e64b7e88b8d29d04adda4 Mon Sep 17 00:00:00 2001
From: Ian Chen <ian.cy.chen@samsung.com>
Date: Wed, 29 Aug 2012 15:05:36 +0900
Subject: [PATCH] --- yaml --- r: 322510 b: refs/heads/master c:
 3550ccdb9d8d350e526b809bf3dd92b550a74fe1 h: refs/heads/master v: v3

---
 [refs]                         |  2 +-
 trunk/drivers/mmc/card/block.c | 26 +++++++++++++++++++++++++-
 trunk/include/linux/mmc/card.h |  1 +
 3 files changed, 27 insertions(+), 2 deletions(-)

diff --git a/[refs] b/[refs]
index d20379cf24be..3c1924eed948 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 9623b5b9192b349bcadb31cce159072a78ac6972
+refs/heads/master: 3550ccdb9d8d350e526b809bf3dd92b550a74fe1
diff --git a/trunk/drivers/mmc/card/block.c b/trunk/drivers/mmc/card/block.c
index f1c84decb192..172a768036d8 100644
--- a/trunk/drivers/mmc/card/block.c
+++ b/trunk/drivers/mmc/card/block.c
@@ -1411,7 +1411,8 @@ 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);
@@ -1716,6 +1717,7 @@ static int mmc_add_disk(struct mmc_blk_data *md)
 #define CID_MANFID_SANDISK	0x2
 #define CID_MANFID_TOSHIBA	0x11
 #define CID_MANFID_MICRON	0x13
+#define CID_MANFID_SAMSUNG	0x15
 
 static const struct mmc_fixup blk_fixups[] =
 {
@@ -1752,6 +1754,28 @@ static const struct mmc_fixup blk_fixups[] =
 	MMC_FIXUP(CID_NAME_ANY, CID_MANFID_MICRON, 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
 };
 
diff --git a/trunk/include/linux/mmc/card.h b/trunk/include/linux/mmc/card.h
index 111aca5e97f3..4b27f9f503e4 100644
--- a/trunk/include/linux/mmc/card.h
+++ b/trunk/include/linux/mmc/card.h
@@ -239,6 +239,7 @@ struct mmc_card {
 #define MMC_QUIRK_BLK_NO_CMD23	(1<<7)		/* Avoid CMD23 for regular multiblock */
 #define MMC_QUIRK_BROKEN_BYTE_MODE_512 (1<<8)	/* Avoid sending 512 bytes in */
 #define MMC_QUIRK_LONG_READ_TIME (1<<9)		/* Data read time > CSD says */
+#define MMC_QUIRK_SEC_ERASE_TRIM_BROKEN (1<<10)	/* Skip secure for erase/trim */
 						/* byte mode */
 	unsigned int    poweroff_notify_state;	/* eMMC4.5 notify feature */
 #define MMC_NO_POWER_NOTIFICATION	0