[PATCH V3 6/8] mmc: lock: Prevent partition table read for locked cards.

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Change the MMC block layer to avoid reading the partition table
when the card is locked because read commands will fail.

Signed-off-by: Al Cooper <alcooperx@xxxxxxxxx>
---
 drivers/mmc/card/block.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index 60f7141..5650748 100644
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -2147,6 +2147,13 @@ static struct mmc_blk_data *mmc_blk_alloc_req(struct mmc_card *card,
 		md->disk->flags |= GENHD_FL_NO_PART_SCAN;
 
 	/*
+	 * If the card is locked, reads will fail so prevent partition
+	 * table scan
+	 */
+	if (mmc_card_locked(card))
+		md->disk->flags |= GENHD_FL_NO_PART_SCAN;
+
+	/*
 	 * As discussed on lkml, GENHD_FL_REMOVABLE should:
 	 *
 	 * - be set for removable media with permanent block devices
-- 
1.9.0.138.g2de3478

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