1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/char/nwbutton.c b/drivers/char/nwbutton.c
index 1fd00dc06897..76c490fa0511 100644
--- a/drivers/char/nwbutton.c
+++ b/drivers/char/nwbutton.c
@@ -168,7 +168,10 @@ static irqreturn_t button_handler (int irq, void *dev_id)
 static int button_read (struct file *filp, char __user *buffer,
                         size_t count, loff_t *ppos)
 {
-        interruptible_sleep_on (&button_wait_queue);
+        DEFINE_WAIT(wait);
+        prepare_to_wait(&button_wait_queue, &wait, TASK_INTERRUPTIBLE);
+        schedule();
+        finish_wait(&button_wait_queue, &wait);
         return (copy_to_user (buffer, &button_output_buffer, bcount))
                  ? -EFAULT : bcount;
 }