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authorAdrian Hunter <adrian.hunter@intel.com>2016-05-04 14:38:12 +0300
committerUlf Hansson <ulf.hansson@linaro.org>2016-05-17 17:54:36 +0300
commit3c866568aff7dcfc0bbd5ffc7fcc34fa8f100f67 (patch)
treebfc1fac4d66074396bde169f4a4dfc26fbc6f8b5 /drivers/mmc
parent7ff2760999a86e4d2b1af93dcf0f0d336c309571 (diff)
downloadlinux-3c866568aff7dcfc0bbd5ffc7fcc34fa8f100f67.tar.xz
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 <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.c8
1 files changed, 8 insertions, 0 deletions
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 */