TTY: sclp_vt220, remove unused allocation

80 bytes which are allocated in tty->ops->open and assigned to
tty->driver_data are never used. Remove that.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: linux390@de.ibm.com
Cc: linux-s390@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/s390/char/sclp_vt220.c b/drivers/s390/char/sclp_vt220.c
index 25cf2e8..edfc0fd 100644 (file)
--- a/drivers/s390/char/sclp_vt220.c
+++ b/drivers/s390/char/sclp_vt220.c
@@ -34,7 +34,6 @@
 #define SCLP_VT220_DEVICE_NAME         "ttysclp"
 #define SCLP_VT220_CONSOLE_NAME                "ttyS"
 #define SCLP_VT220_CONSOLE_INDEX       1       /* console=ttyS1 */
-#define SCLP_VT220_BUF_SIZE            80
 
 /* Representation of a single write request */
 struct sclp_vt220_request {
@@ -496,9 +495,6 @@ sclp_vt220_open(struct tty_struct *tty, struct file *filp)
 {
        if (tty->count == 1) {
                tty_port_tty_set(&sclp_vt220_port, tty);
-               tty->driver_data = kmalloc(SCLP_VT220_BUF_SIZE, GFP_KERNEL);
-               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;
@@ -514,11 +510,8 @@ sclp_vt220_open(struct tty_struct *tty, struct file *filp)
 static void
 sclp_vt220_close(struct tty_struct *tty, struct file *filp)
 {
-       if (tty->count == 1) {
+       if (tty->count == 1)
                tty_port_tty_set(&sclp_vt220_port, NULL);
-               kfree(tty->driver_data);
-               tty->driver_data = NULL;
-       }
 }
 
 /*