mirror of https://github.com/hak5/openwrt.git
57 lines
1.8 KiB
Diff
57 lines
1.8 KiB
Diff
From 8b01bab8c89fd4930ad304b5a7b3c1f6016c3743 Mon Sep 17 00:00:00 2001
|
|
From: Phil Elwell <phil@raspberrypi.org>
|
|
Date: Wed, 11 May 2016 12:50:33 +0100
|
|
Subject: [PATCH] mmc: Add MMC_QUIRK_ERASE_BROKEN for some cards
|
|
|
|
Some SD cards have been found that corrupt data when small blocks
|
|
are erased. Add a quirk to indicate that ERASE should not be used,
|
|
and set it for cards of that type.
|
|
|
|
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
|
|
---
|
|
drivers/mmc/card/block.c | 7 +++++++
|
|
drivers/mmc/core/core.c | 3 ++-
|
|
include/linux/mmc/card.h | 3 +++
|
|
3 files changed, 12 insertions(+), 1 deletion(-)
|
|
|
|
--- a/drivers/mmc/card/block.c
|
|
+++ b/drivers/mmc/card/block.c
|
|
@@ -2553,6 +2553,13 @@ static const struct mmc_fixup blk_fixups
|
|
MMC_FIXUP("V10016", CID_MANFID_KINGSTON, CID_OEMID_ANY, add_quirk_mmc,
|
|
MMC_QUIRK_TRIM_BROKEN),
|
|
|
|
+ /*
|
|
+ * On some Kingston SD cards, multiple erases of less than 64
|
|
+ * sectors can cause corruption.
|
|
+ */
|
|
+ MMC_FIXUP("SD16G", 0x41, 0x3432, add_quirk_mmc,
|
|
+ MMC_QUIRK_ERASE_BROKEN),
|
|
+
|
|
END_FIXUP
|
|
};
|
|
|
|
--- a/drivers/mmc/core/core.c
|
|
+++ b/drivers/mmc/core/core.c
|
|
@@ -2253,7 +2253,8 @@ EXPORT_SYMBOL(mmc_erase);
|
|
int mmc_can_erase(struct mmc_card *card)
|
|
{
|
|
if ((card->host->caps & MMC_CAP_ERASE) &&
|
|
- (card->csd.cmdclass & CCC_ERASE) && card->erase_size)
|
|
+ (card->csd.cmdclass & CCC_ERASE) && card->erase_size &&
|
|
+ !(card->quirks & MMC_QUIRK_ERASE_BROKEN))
|
|
return 1;
|
|
return 0;
|
|
}
|
|
--- a/include/linux/mmc/card.h
|
|
+++ b/include/linux/mmc/card.h
|
|
@@ -281,6 +281,9 @@ struct mmc_card {
|
|
#define MMC_QUIRK_TRIM_BROKEN (1<<12) /* Skip trim */
|
|
|
|
|
|
+#define MMC_QUIRK_ERASE_BROKEN (1<<31) /* Skip erase */
|
|
+
|
|
+
|
|
unsigned int erase_size; /* erase size in sectors */
|
|
unsigned int erase_shift; /* if erase unit is power 2 */
|
|
unsigned int pref_erase; /* in sectors */
|