1 files changed, 9 insertions, 3 deletions

diff --git a/drivers/ide/ide-floppy_ioctl.c b/drivers/ide/ide-floppy_ioctl.c
index 9c2288234dea..fd3d05ab3417 100644
--- a/drivers/ide/ide-floppy_ioctl.c
+++ b/drivers/ide/ide-floppy_ioctl.c
@@ -5,6 +5,7 @@
 #include <linux/kernel.h>
 #include <linux/ide.h>
 #include <linux/cdrom.h>
+#include <linux/smp_lock.h>
 
 #include <asm/unaligned.h>
 
@@ -275,12 +276,15 @@ int ide_floppy_ioctl(ide_drive_t *drive, struct block_device *bdev,
         void __user *argp = (void __user *)arg;
         int err;
 
-        if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR)
-                return ide_floppy_lockdoor(drive, &pc, arg, cmd);
+        lock_kernel();
+        if (cmd == CDROMEJECT || cmd == CDROM_LOCKDOOR) {
+                err = ide_floppy_lockdoor(drive, &pc, arg, cmd);
+                goto out;
+        }
 
         err = ide_floppy_format_ioctl(drive, &pc, mode, cmd, argp);
         if (err != -ENOTTY)
-                return err;
+                goto out;
 
         /*
          * skip SCSI_IOCTL_SEND_COMMAND (deprecated)
@@ -293,5 +297,7 @@ int ide_floppy_ioctl(ide_drive_t *drive, struct block_device *bdev,
         if (err == -ENOTTY)
                 err = generic_ide_ioctl(drive, bdev, cmd, arg);
 
+out:
+        unlock_kernel();
         return err;
 }