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mmc: block: Always switch back to main area after RPMB access

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In preparation to support the use of the RPMB partition with transfer
modes that might require re-tuning, always switch back to the main
area after RPMB access.

RPMB is accessible only via IOCTL so only those paths are affected.

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 14:38:12 +03:00 committed by Ulf Hansson
parent 7ff2760999
commit 3c866568af
1 changed files with 8 additions and 0 deletions
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8
drivers/mmc/card/block.c
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@ -618,6 +618,10 @@ static int mmc_blk_ioctl_cmd(struct block_device *bdev,
ioc_err = __mmc_blk_ioctl_cmd(card, md, idata);
/* Always switch back to main area after RPMB access */
if (md->area_type & MMC_BLK_DATA_AREA_RPMB)
mmc_blk_part_switch(card, dev_get_drvdata(&card->dev));
mmc_put_card(card);
err = mmc_blk_ioctl_copy_to_user(ic_ptr, idata);
@ -685,6 +689,10 @@ static int mmc_blk_ioctl_multi_cmd(struct block_device *bdev,
for (i = 0; i < num_of_cmds && !ioc_err; i++)
ioc_err = __mmc_blk_ioctl_cmd(card, md, idata[i]);
/* Always switch back to main area after RPMB access */
if (md->area_type & MMC_BLK_DATA_AREA_RPMB)
mmc_blk_part_switch(card, dev_get_drvdata(&card->dev));
mmc_put_card(card);
/* copy to user if data and response */