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/keyspan_pda.c b/drivers/usb/serial/keyspan_pda.c
index 334b1a2..3b17d5d 100644
--- a/drivers/usb/serial/keyspan_pda.c
+++ b/drivers/usb/serial/keyspan_pda.c
@@ -138,7 +138,6 @@
static void keyspan_pda_rx_interrupt(struct urb *urb)
{
struct usb_serial_port *port = urb->context;
- struct tty_struct *tty;
unsigned char *data = urb->transfer_buffer;
int retval;
int status = urb->status;
@@ -163,14 +162,12 @@
/* see if the message is data or a status interrupt */
switch (data[0]) {
case 0:
- tty = tty_port_tty_get(&port->port);
/* rest of message is rx data */
- if (tty && urb->actual_length) {
+ if (urb->actual_length) {
tty_insert_flip_string(&port->port, data + 1,
urb->actual_length - 1);
- tty_flip_buffer_push(tty);
+ tty_flip_buffer_push(&port->port);
}
- tty_kref_put(tty);
break;
case 1:
/* status interrupt */