TTY: switch tty_buffer_request_room to tty_port
Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty pointer in
many call sites. Only tty_port will be needed and hence no more
tty_port_tty_get calls in those paths.
Here we start with tty_buffer_request_room.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c
index e9a0abc..4ff2503 100644
--- a/arch/um/drivers/chan_kern.c
+++ b/arch/um/drivers/chan_kern.c
@@ -554,6 +554,7 @@
void chan_interrupt(struct line *line, struct tty_struct *tty, int irq)
{
+ struct tty_port *port = &line->port;
struct chan *chan = line->chan_in;
int err;
char c;
@@ -562,7 +563,7 @@
goto out;
do {
- if (tty && !tty_buffer_request_room(tty, 1)) {
+ if (!tty_buffer_request_room(port, 1)) {
schedule_delayed_work(&line->task, 1);
goto out;
}