1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/sbus/char/display7seg.c b/drivers/sbus/char/display7seg.c
index 3279a1b6501d..d8f5c0ca236d 100644
--- a/drivers/sbus/char/display7seg.c
+++ b/drivers/sbus/char/display7seg.c
@@ -94,6 +94,7 @@ static int d7s_open(struct inode *inode, struct file *f)
 {
         if (D7S_MINOR != iminor(inode))
                 return -ENODEV;
+        cycle_kernel_lock();
         atomic_inc(&d7s_users);
         return 0;
 }