From 57da0c042f4af52614f4bd1a148155a299ae5cd8 Mon Sep 17 00:00:00 2001
From: Adrian Hunter <adrian.hunter@intel.com>
Date: Wed, 4 May 2016 14:38:13 +0300
Subject: [PATCH] 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>
---
drivers/mmc/card/block.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 48a5d2e04cea2..33b98595d8d7d 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;