Commit 57da0c04 authored May 04, 2016 by Adrian Hunter Committed by Ulf Hansson May 17, 2016

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>

parent 3c866568

drivers/mmc/card/block.c

+10 −1

Original line number	Diff line number	Diff line
		@@ -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;

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