1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/char/hvc_iucv.c b/drivers/char/hvc_iucv.c
index 0ecac7e532f6..b8a5d654d3d0 100644
--- a/drivers/char/hvc_iucv.c
+++ b/drivers/char/hvc_iucv.c
@@ -273,7 +273,9 @@ static int hvc_iucv_write(struct hvc_iucv_private *priv,
         case MSG_TYPE_WINSIZE:
                 if (rb->mbuf->datalen != sizeof(struct winsize))
                         break;
-                hvc_resize(priv->hvc, *((struct winsize *) rb->mbuf->data));
+                /* The caller must ensure that the hvc is locked, which
+                 * is the case when called from hvc_iucv_get_chars() */
+                __hvc_resize(priv->hvc, *((struct winsize *) rb->mbuf->data));
                 break;
 
         case MSG_TYPE_ERROR:    /* ignored ... */