TTY: switch tty_flip_buffer_push
Now, we start converting tty buffer functions to actually use
tty_port. This will allow us to get rid of the need of tty in many
call sites. Only tty_port will needed and hence no more
tty_port_tty_get in those paths.
Now, the one where most of tty_port_tty_get gets removed:
tty_flip_buffer_push.
IOW we also closed all the races in drivers not using tty_port_tty_get
at all yet.
Also we move tty_flip_buffer_push declaration from include/linux/tty.h
to include/linux/tty_flip.h to all others while we are changing it
anyway.
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 3ddd7a1..809fb32 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -744,7 +744,6 @@
struct usb_serial *serial;
struct usb_serial_port *port;
struct moschip_port *mos7840_port;
- struct tty_struct *tty;
int status = urb->status;
mos7840_port = urb->context;
@@ -774,12 +773,8 @@
if (urb->actual_length) {
struct tty_port *tport = &mos7840_port->port->port;
- tty = tty_port_tty_get(tport);
- if (tty) {
- tty_insert_flip_string(tport, data, urb->actual_length);
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
- }
+ tty_insert_flip_string(tport, data, urb->actual_length);
+ tty_flip_buffer_push(tport);
mos7840_port->icount.rx += urb->actual_length;
smp_wmb();
dev_dbg(&port->dev, "mos7840_port->icount.rx is %d:\n", mos7840_port->icount.rx);
