diff options
| author | Adrian Hunter | 2012-04-05 14:45:48 +0300 |
|---|---|---|
| committer | Chris Ball | 2012-04-20 20:28:58 -0400 |
| commit | 283028122db37621b124f079ca8eae5b64807ad4 (patch) | |
| tree | 54ffa48017525a2df2acd3404e43490c88b6c49a /drivers/mmc/core | |
| parent | 7194efb8f063ee3aa0cb50d9002348887e68ec10 (diff) | |
mmc: fixes for eMMC v4.5 sanitize operation
eMMC v4.5 sanitize operation erases all copies of unmapped
data. However trim or erase operations must be used first
to unmap the required sectors. That was not being done.
Fixes apply to linux 3.2 on.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: <stable@vger.kernel.org>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/core')
| -rw-r--r-- | drivers/mmc/core/core.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mmc/core/core.c b/drivers/mmc/core/core.c index 83db5ef96bb0..e541efbf3256 100644 --- a/drivers/mmc/core/core.c +++ b/drivers/mmc/core/core.c @@ -1702,6 +1702,8 @@ EXPORT_SYMBOL(mmc_can_discard); int mmc_can_sanitize(struct mmc_card *card) { + if (!mmc_can_trim(card) && !mmc_can_erase(card)) + return 0; if (card->ext_csd.sec_feature_support & EXT_CSD_SEC_SANITIZE) return 1; return 0; |