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authorAdrian Hunter <adrian.hunter@intel.com>2016-05-04 14:38:13 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2016-05-17 17:54:45 +0300
commit57da0c042f4af52614f4bd1a148155a299ae5cd8 (patch)
treeacf76868e7b913ba085e4477bb3f0e73048a7150 /drivers/mmc
parent3c866568aff7dcfc0bbd5ffc7fcc34fa8f100f67 (diff)
downloadlinux-57da0c042f4af52614f4bd1a148155a299ae5cd8.tar.xz
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>
Diffstat (limited to 'drivers/mmc')
-rw-r--r--drivers/mmc/card/block.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 48a5d2e04cea..33b98595d8d7 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -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;