TTY: tty3270, add tty_port
And use tty from that. This means, we convert most of the users to
accept tty_port instead. This is not racy and ensures the tty to be
properly refcounted.
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/keyboard.h b/drivers/s390/char/keyboard.h
index 7e736aa..f682f4e 100644
--- a/drivers/s390/char/keyboard.h
+++ b/drivers/s390/char/keyboard.h
@@ -21,7 +21,7 @@
*/
struct kbd_data {
- struct tty_struct *tty;
+ struct tty_port *port;
unsigned short **key_maps;
char **func_table;
fn_handler_fn **fn_handler;
@@ -42,16 +42,24 @@
* Helper Functions.
*/
static inline void
-kbd_put_queue(struct tty_struct *tty, int ch)
+kbd_put_queue(struct tty_port *port, int ch)
{
+ struct tty_struct *tty = tty_port_tty_get(port);
+ if (!tty)
+ return;
tty_insert_flip_char(tty, ch, 0);
tty_schedule_flip(tty);
+ tty_kref_put(tty);
}
static inline void
-kbd_puts_queue(struct tty_struct *tty, char *cp)
+kbd_puts_queue(struct tty_port *port, char *cp)
{
+ struct tty_struct *tty = tty_port_tty_get(port);
+ if (!tty)
+ return;
while (*cp)
tty_insert_flip_char(tty, *cp++, 0);
tty_schedule_flip(tty);
+ tty_kref_put(tty);
}