mmc: Add MMC_QUIRK_ERASE_BROKEN for some cards
authorPhil Elwell <phil@raspberrypi.org>
Wed, 11 May 2016 11:50:33 +0000 (12:50 +0100)
committerRaspbian kernel package updater <root@raspbian.org>
Thu, 9 Mar 2017 17:51:00 +0000 (17:51 +0000)
commit50836003e0469fd36137428bcf8e0e8dfce20d27
tree1738e69261a160799f74a394c10a9e10c766d1ac
parent7bd28eedc4133822b7ff051f0d95198dcf09bc99
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>
mmc: Apply QUIRK_BROKEN_ERASE to other capacities

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
mmc: Add card_quirks module parameter, log quirks

Use mmc_block.card_quirks to override the quirks for all SD or MMC
cards. The value is a bitfield using the bit positions defined in
include/linux/mmc/card.h. If the module parameter is placed in the
kernel command line (or bootargs) stored on the card then, assuming the
device only has one SD card interface, the override effectively becomes
card-specific.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
drivers/mmc/card/block.c
drivers/mmc/core/core.c
include/linux/mmc/card.h