diff options
Diffstat (limited to 'drivers/mmc/card/block.c')
| -rw-r--r-- | drivers/mmc/card/block.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mmc/card/block.c b/drivers/mmc/card/block.c index cb9fbc83b09..8433cde29c8 100644 --- a/drivers/mmc/card/block.c +++ b/drivers/mmc/card/block.c @@ -29,6 +29,7 @@ #include <linux/kdev_t.h> #include <linux/blkdev.h> #include <linux/mutex.h> +#include <linux/smp_lock.h> #include <linux/scatterlist.h> #include <linux/string_helpers.h> @@ -107,6 +108,7 @@ static int mmc_blk_open(struct block_device *bdev, fmode_t mode) struct mmc_blk_data *md = mmc_blk_get(bdev->bd_disk); int ret = -ENXIO; + lock_kernel(); if (md) { if (md->usage == 2) check_disk_change(bdev); @@ -117,6 +119,7 @@ static int mmc_blk_open(struct block_device *bdev, fmode_t mode) ret = -EROFS; } } + unlock_kernel(); return ret; } @@ -125,7 +128,9 @@ static int mmc_blk_release(struct gendisk *disk, fmode_t mode) { struct mmc_blk_data *md = disk->private_data; + lock_kernel(); mmc_blk_put(md); + unlock_kernel(); return 0; } |