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| author | Andrei Warkentin <andreiw@motorola.com> | 2011-03-31 18:40:00 -0500 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2011-05-24 20:59:38 -0400 |
| commit | f4c5522b0a8827f39f83f928961d87e081bfe71c (patch) | |
| tree | 3c2126f0adb2a3444b2fd152cc1a880c192c9d77 /drivers/mmc/core | |
| parent | 766a6bf6e987ff5f5085c614b5a62a55006b6a7e (diff) | |
| download | linux-f4c5522b0a8827f39f83f928961d87e081bfe71c.tar.gz linux-f4c5522b0a8827f39f83f928961d87e081bfe71c.tar.bz2 linux-f4c5522b0a8827f39f83f928961d87e081bfe71c.zip | |
mmc: Reliable write support.
Allows reliable writes to be used for MMC writes. Reliable writes are used
to service write REQ_FUA/REQ_META requests. Handles both the legacy and
the enhanced reliable write support in MMC cards.
Signed-off-by: Andrei Warkentin <andreiw@motorola.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/mmc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc.c b/drivers/mmc/core/mmc.c index 5c611a6e0080..ae6b8fd38800 100644 --- a/drivers/mmc/core/mmc.c +++ b/drivers/mmc/core/mmc.c @@ -300,6 +300,8 @@ static int mmc_read_ext_csd(struct mmc_card *card) ext_csd[EXT_CSD_ERASE_TIMEOUT_MULT]; card->ext_csd.hc_erase_size = ext_csd[EXT_CSD_HC_ERASE_GRP_SIZE] << 10; + + card->ext_csd.rel_sectors = ext_csd[EXT_CSD_REL_WR_SEC_C]; } if (card->ext_csd.rev >= 4) { @@ -351,6 +353,9 @@ static int mmc_read_ext_csd(struct mmc_card *card) ext_csd[EXT_CSD_TRIM_MULT]; } + if (card->ext_csd.rev >= 5) + card->ext_csd.rel_param = ext_csd[EXT_CSD_WR_REL_PARAM]; + if (ext_csd[EXT_CSD_ERASED_MEM_CONT]) card->erased_byte = 0xFF; else |