diff options
| author | Maya Erez <merez@codeaurora.org> | 2013-04-18 12:41:55 (GMT) |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2013-05-26 18:23:13 (GMT) |
| commit | 775a9362b5d7e006ff6bbec5cb9c9c9d5a751696 (patch) | |
| tree | 78d66b7a04b5e339c2e0faa24290f72eb8f8bae4 /drivers/mmc/core/mmc_ops.c | |
| parent | b689167984bc14ed06c8bcff52ef5eb1fd9cf83b (diff) | |
| download | linux-fsl-qoriq-775a9362b5d7e006ff6bbec5cb9c9c9d5a751696.tar.xz | |
mmc: card: Adding support for sanitize in eMMC 4.5
The sanitize support is added as a user-app ioctl call, and
was removed from the block-device request, since its purpose is
to be invoked not via File-System but by a user.
This feature deletes the unmap memory region of the eMMC card,
by writing to a specific register in the EXT_CSD.
unmap region is the memory region that was previously deleted
(by erase, trim or discard operation).
In order to avoid timeout when sanitizing large-scale cards,
the timeout for sanitize operation is 240 seconds.
Signed-off-by: Yaniv Gardi <ygardi@codeaurora.org>
Signed-off-by: Maya Erez <merez@codeaurora.org>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/core/mmc_ops.c')
| -rw-r--r-- | drivers/mmc/core/mmc_ops.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mmc/core/mmc_ops.c b/drivers/mmc/core/mmc_ops.c index 49f04bc..124af52 100644 --- a/drivers/mmc/core/mmc_ops.c +++ b/drivers/mmc/core/mmc_ops.c @@ -431,6 +431,8 @@ int __mmc_switch(struct mmc_card *card, u8 set, u8 index, u8 value, cmd.cmd_timeout_ms = timeout_ms; + if (index == EXT_CSD_SANITIZE_START) + cmd.sanitize_busy = true; err = mmc_wait_for_cmd(card->host, &cmd, MMC_CMD_RETRIES); if (err) |