1 files changed, 6 insertions, 0 deletions

diff --git a/drivers/char/istallion.c b/drivers/char/istallion.c
index c645455c3fd1..37dc3d202c27 100644
--- a/drivers/char/istallion.c
+++ b/drivers/char/istallion.c
@@ -4433,6 +4433,8 @@ static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, un
         done = 0;
         rc = 0;
 
+        lock_kernel();
+
         switch (cmd) {
         case COM_GETPORTSTATS:
                 rc = stli_getportstats(NULL, argp);
@@ -4455,6 +4457,7 @@ static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, un
                 done++;
                 break;
         }
+        unlock_kernel();
 
         if (done)
                 return rc;
@@ -4472,6 +4475,8 @@ static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, un
         if (brdp->state == 0)
                 return -ENODEV;
 
+        lock_kernel();
+
         switch (cmd) {
         case STL_BINTR:
                 EBRDINTR(brdp);
@@ -4494,6 +4499,7 @@ static int stli_memioctl(struct inode *ip, struct file *fp, unsigned int cmd, un
                 rc = -ENOIOCTLCMD;
                 break;
         }
+        unlock_kernel();
         return rc;
 }