TTY: isdn/gigaset, use tty_port
Let us port the code to use tty_port. We now use open_count and tty
from there. This allows us also to use tty_port_tty_set with tty
refcounting instead of hand-written locking and logic.
Note that tty and open_count are no longer protected by cs->lock. It is
protected by tty_port->lock. But since all the places where they were
used are now switched to the helpers, we are fine.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Hansjoerg Lipp <hjlipp@web.de>
Acked-by: Tilman Schmidt <tilman@imap.cc>
Cc: <gigaset307x-common@lists.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/isdn/gigaset/common.c b/drivers/isdn/gigaset/common.c
index ac0186e..880f6ef 100644
--- a/drivers/isdn/gigaset/common.c
+++ b/drivers/isdn/gigaset/common.c
@@ -720,12 +720,11 @@
tasklet_init(&cs->event_tasklet, gigaset_handle_event,
(unsigned long) cs);
+ tty_port_init(&cs->port);
cs->commands_pending = 0;
cs->cur_at_seq = 0;
cs->gotfwver = -1;
- cs->open_count = 0;
cs->dev = NULL;
- cs->tty = NULL;
cs->tty_dev = NULL;
cs->cidmode = cidmode != 0;
cs->tabnocid = gigaset_tab_nocid;