1 files changed, 18 insertions, 2 deletions

diff --git a/drivers/block/swim.c b/drivers/block/swim.c
index e463657569ff..2e46815876df 100644
--- a/drivers/block/swim.c
+++ b/drivers/block/swim.c
@@ -20,6 +20,7 @@
 #include <linux/fd.h>
 #include <linux/slab.h>
 #include <linux/blkdev.h>
+#include <linux/smp_lock.h>
 #include <linux/hdreg.h>
 #include <linux/kernel.h>
 #include <linux/delay.h>
@@ -661,11 +662,23 @@ out:
         return err;
 }
 
+static int floppy_unlocked_open(struct block_device *bdev, fmode_t mode)
+{
+        int ret;
+
+        lock_kernel();
+        ret = floppy_open(bdev, mode);
+        unlock_kernel();
+
+        return ret;
+}
+
 static int floppy_release(struct gendisk *disk, fmode_t mode)
 {
         struct floppy_state *fs = disk->private_data;
         struct swim __iomem *base = fs->swd->base;
 
+        lock_kernel();
         if (fs->ref_count < 0)
                 fs->ref_count = 0;
         else if (fs->ref_count > 0)
@@ -673,6 +686,7 @@ static int floppy_release(struct gendisk *disk, fmode_t mode)
 
         if (fs->ref_count == 0)
                 swim_motor(base, OFF);
+        unlock_kernel();
 
         return 0;
 }
@@ -690,7 +704,9 @@ static int floppy_ioctl(struct block_device *bdev, fmode_t mode,
         case FDEJECT:
                 if (fs->ref_count != 1)
                         return -EBUSY;
+                lock_kernel();
                 err = floppy_eject(fs);
+                unlock_kernel();
                 return err;
 
         case FDGETPRM:
@@ -751,9 +767,9 @@ static int floppy_revalidate(struct gendisk *disk)
 
 static const struct block_device_operations floppy_fops = {
         .owner           = THIS_MODULE,
-        .open            = floppy_open,
+        .open            = floppy_unlocked_open,
         .release         = floppy_release,
-        .locked_ioctl    = floppy_ioctl,
+        .ioctl           = floppy_ioctl,
         .getgeo          = floppy_getgeo,
         .media_changed   = floppy_check_change,
         .revalidate_disk = floppy_revalidate,