[PATCH] s390: disconnected 3270 console

Fix reboot with a disconnected 3270 console.

Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 11 insertions, 5 deletions

diff --git a/drivers/s390/char/raw3270.c b/drivers/s390/char/raw3270.c
index d5eefeaba50c..328d9cbc56a3 100644
--- a/drivers/s390/char/raw3270.c
+++ b/drivers/s390/char/raw3270.c
@@ -632,12 +632,9 @@ __raw3270_size_device(struct raw3270 *rp)
         raw3270_init_request.ccw.cda = (__u32) __pa(raw3270_init_data);
 
         rc = raw3270_start_init(rp, &raw3270_init_view, &raw3270_init_request);
-        if (rc) {
+        if (rc)
                 /* Check error cases: -ERESTARTSYS, -EIO and -EOPNOTSUPP */
-                if (rc == -EOPNOTSUPP && MACHINE_IS_VM)
-                        return __raw3270_size_device_vm(rp);
                 return rc;
-        }
 
         /* Wait for attention interrupt. */
 #ifdef CONFIG_TN3270_CONSOLE
@@ -695,7 +692,10 @@ raw3270_size_device(struct raw3270 *rp)
         down(&raw3270_init_sem);
         rp->view = &raw3270_init_view;
         raw3270_init_view.dev = rp;
-        rc = __raw3270_size_device(rp);
+        if (MACHINE_IS_VM)
+                rc = __raw3270_size_device_vm(rp);
+        else
+                rc = __raw3270_size_device(rp);
         raw3270_init_view.dev = 0;
         rp->view = 0;
         up(&raw3270_init_sem);
@@ -710,6 +710,12 @@ raw3270_size_device(struct raw3270 *rp)
                         rp->model = 4;
                 if (rp->rows == 27 && rp->cols == 132)
                         rp->model = 5;
+        } else {
+                /* Couldn't detect size. Use default model 2. */
+                rp->model = 2;
+                rp->rows = 24;
+                rp->cols = 80;
+                return 0;
         }
         return rc;
 }