mmc: Fix the block device read only flag

While the MMC handled the card's read only flag correctly on open,
it did not setup the flag in the allocated disk structure. The
consequence being that probing the /sys/class/block/mmcblkX/ro
attribute always reported 0.

Signed-off-by: Marc-Andre Hebert <hebert.marcandre@gmail.com>
Reviewed-by: Chris Ball <cjb@laptop.org>
Tested-by: Chris Ball <cjb@laptop.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c
index bfc8a8ae55df209458b52e0cb6bfcb1b6f79d989..61d233a7c1180e4b9fea129104ad60f631e60de2 100644 (file)
--- a/drivers/mmc/card/block.c
+++ b/drivers/mmc/card/block.c
@@ -621,6 +621,7 @@ static struct mmc_blk_data *mmc_blk_alloc(struct mmc_card *card)
        md->disk->private_data = md;
        md->disk->queue = md->queue.queue;
        md->disk->driverfs_dev = &card->dev;
+       set_disk_ro(md->disk, md->read_only);
 
        /*
         * As discussed on lkml, GENHD_FL_REMOVABLE should: