[S390] sclp_vt220: set initial terminal window size

When opening a SCLP VT220 terminal, the terminal window size is not
initialized (defaults to zero).
Since the SCLP VT220 terminal supports only 80x24, explicitly set
the window size to prevent (n)curses applications from guessing
the default setting.

Signed-off-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index b9d2a007e93b651842a90c92af6bc773c817e456..3796ffdb847995c89ff74acf9bb5078f28a7eff5 100644 (file)
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -495,6 +495,10 @@ sclp_vt220_open(struct tty_struct *tty, struct file *filp)
                if (tty->driver_data == NULL)
                        return -ENOMEM;
                tty->low_latency = 0;
+               if (!tty->winsize.ws_row && !tty->winsize.ws_col) {
+                       tty->winsize.ws_row = 24;
+                       tty->winsize.ws_col = 80;
+               }
        }
        return 0;
 }