memstick: remove mspro_block_mutex

mspro_block_mutex is identical in scope to mspro_block_disk_lock and therefore
unnecessary.

Signed-off-by: Alex Dubov <oakad@yahoo.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/memstick/core/mspro_block.c b/drivers/memstick/core/mspro_block.c
index a167938..b11b2b8 100644 (file)
--- a/drivers/memstick/core/mspro_block.c
+++ b/drivers/memstick/core/mspro_block.c
@@ -23,7 +23,6 @@
 
 #define DRIVER_NAME "mspro_block"
 
-static DEFINE_MUTEX(mspro_block_mutex);
 static int major;
 module_param(major, int, 0644);
 
@@ -181,7 +180,6 @@ static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
        struct mspro_block_data *msb = disk->private_data;
        int rc = -ENXIO;
 
-       mutex_lock(&mspro_block_mutex);
        mutex_lock(&mspro_block_disk_lock);
 
        if (msb && msb->card) {
@@ -193,7 +191,6 @@ static int mspro_block_bd_open(struct block_device *bdev, fmode_t mode)
        }
 
        mutex_unlock(&mspro_block_disk_lock);
-       mutex_unlock(&mspro_block_mutex);
 
        return rc;
 }
@@ -225,11 +222,7 @@ static int mspro_block_disk_release(struct gendisk *disk)
 
 static int mspro_block_bd_release(struct gendisk *disk, fmode_t mode)
 {
-       int ret;
-       mutex_lock(&mspro_block_mutex);
-       ret = mspro_block_disk_release(disk);
-       mutex_unlock(&mspro_block_mutex);
-       return ret;
+       return mspro_block_disk_release(disk);
 }
 
 static int mspro_block_bd_getgeo(struct block_device *bdev,