1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/s390/char/monreader.c b/drivers/s390/char/monreader.c
index 89ece1c235aa..66e21dd23154 100644
--- a/drivers/s390/char/monreader.c
+++ b/drivers/s390/char/monreader.c
@@ -357,6 +357,7 @@ static int mon_close(struct inode *inode, struct file *filp)
         atomic_set(&monpriv->msglim_count, 0);
         monpriv->write_index  = 0;
         monpriv->read_index   = 0;
+        dev_set_drvdata(monreader_device, NULL);
 
         for (i = 0; i < MON_MSGLIM; i++)
                 kfree(monpriv->msg_array[i]);