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>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/char/pcmcia/synclink_cs.c b/drivers/char/pcmcia/synclink_cs.c
index b2f35d786025..0b1de715f097 100644
--- a/drivers/char/pcmcia/synclink_cs.c
+++ b/drivers/char/pcmcia/synclink_cs.c
@@ -888,6 +888,7 @@ static void rx_ready_hdlc(MGSLPC_INFO *info, int eom)
 
 static void rx_ready_async(MGSLPC_INFO *info, int tcd, struct tty_struct *tty)
 {
+        struct tty_port *port = &info->port;
         unsigned char data, status, flag;
         int fifo_count;
         int work = 0;
@@ -913,7 +914,7 @@ static void rx_ready_async(MGSLPC_INFO *info, int tcd, struct tty_struct *tty)
         } else
                 fifo_count = 32;
 
-        tty_buffer_request_room(tty, fifo_count);
+        tty_buffer_request_room(port, fifo_count);
         /* Flush received async data to receive data buffer. */
         while (fifo_count) {
                 data   = read_reg(info, CHA + RXFIFO);