From 3c866568aff7dcfc0bbd5ffc7fcc34fa8f100f67 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Wed, 4 May 2016 14:38:12 +0300 Subject: [PATCH] mmc: block: Always switch back to main area after RPMB access 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 Signed-off-by: Ulf Hansson --- drivers/mmc/card/block.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index 5f2a3d69344f..48a5d2e04cea 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -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 */ -- 2.20.1