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/tty/serial/vt8500_serial.c b/drivers/tty/serial/vt8500_serial.c
index 7f41124..f1a398c 100644
--- a/drivers/tty/serial/vt8500_serial.c
+++ b/drivers/tty/serial/vt8500_serial.c
@@ -137,15 +137,6 @@
static void handle_rx(struct uart_port *port)
{
struct tty_port *tport = &port->state->port;
- struct tty_struct *tty = tty_port_tty_get(tport);
- if (!tty) {
- /* Discard data: no tty available */
- int count = (vt8500_read(port, VT8500_URFIDX) & 0x1f00) >> 8;
- u16 ch;
- while (count--)
- ch = readw(port->membase + VT8500_RXFIFO);
- return;
- }
/*
* Handle overrun
@@ -178,8 +169,7 @@
tty_insert_flip_char(tport, c, flag);
}
- tty_flip_buffer_push(tty);
- tty_kref_put(tty);
+ tty_flip_buffer_push(tport);
}
static void handle_tx(struct uart_port *port)