From b5b4ff0a633910b2b9dca7915fd6ab17aa10dc3e Mon Sep 17 00:00:00 2001
From: Shawn Lin <shawn.lin@rock-chips.com>
Date: Wed, 12 Aug 2015 13:08:32 +0800
Subject: 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>
---
include/linux/mmc/card.h | 2 ++
1 file changed, 2 insertions(+)
(limited to 'include/linux')
diff --git a/include/linux/mmc/card.h b/include/linux/mmc/card.h
index 8fcbcd13218f..fdd0779ccdfa 100644
--- a/include/linux/mmc/card.h
+++ b/include/linux/mmc/card.h
@@ -279,6 +279,8 @@ struct mmc_card {
#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 */
#define MMC_QUIRK_BROKEN_IRQ_POLLING (1<<11) /* Polling SDIO_CCCR_INTx could create a fake interrupt */
+#define MMC_QUIRK_TRIM_BROKEN (1<<12) /* Skip trim */
+
unsigned int erase_size; /* erase size in sectors */
unsigned int erase_shift; /* if erase unit is power 2 */
--
cgit