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mmc: block: Pause re-tuning while switched to the RPMB partition 

Re-tuning is not possible when switched to the RPMB
partition.  However re-tuning should not be needed
if re-tuning is done immediately before switching,
a small set of operations is done, and then we
immediately switch back to the main partition.

A previous patch ensured that we immediately switch
back to the main partition.

This patch uses the new facility to "pause" re-tuning
before switching to the RPMB partition, and to "unpause"
it after switching from the RPMB partition.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Adrian Hunter 2016-05-04 14:38:13 +03:00 committed by Ulf Hansson
parent 3c866568af
commit 57da0c042f
1 changed files with 10 additions and 1 deletions
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11
drivers/mmc/card/block.c
View File

@ -756,16 +756,25 @@ static inline int mmc_blk_part_switch(struct mmc_card *card,
if (mmc_card_mmc(card)) {
u8 part_config = card->ext_csd.part_config;
if (md->part_type == EXT_CSD_PART_CONFIG_ACC_RPMB)
mmc_retune_pause(card->host);
part_config &= ~EXT_CSD_PART_CONFIG_ACC_MASK;
part_config |= md->part_type;
ret = mmc_switch(card, EXT_CSD_CMD_SET_NORMAL,
EXT_CSD_PART_CONFIG, part_config,
card->ext_csd.part_time);
if (ret)
if (ret) {
if (md->part_type == EXT_CSD_PART_CONFIG_ACC_RPMB)
mmc_retune_unpause(card->host);
return ret;
}
card->ext_csd.part_config = part_config;
if (main_md->part_curr == EXT_CSD_PART_CONFIG_ACC_RPMB)
mmc_retune_unpause(card->host);
}
main_md->part_curr = md->part_type;