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>

1 files changed, 2 insertions, 3 deletions

diff --git a/drivers/tty/amiserial.c b/drivers/tty/amiserial.c
index 2d1357acbc23..4c7d70172193 100644
--- a/drivers/tty/amiserial.c
+++ b/drivers/tty/amiserial.c
@@ -251,7 +251,6 @@ static void receive_chars(struct serial_state *info)
 {
         int status;
         int serdatr;
-        struct tty_struct *tty = info->tport.tty;
         unsigned char ch, flag;
         struct  async_icount *icount;
         int oe = 0;
@@ -314,7 +313,7 @@ static void receive_chars(struct serial_state *info)
 #endif
             flag = TTY_BREAK;
             if (info->tport.flags & ASYNC_SAK)
-              do_SAK(tty);
+              do_SAK(info->tport.tty);
           } else if (status & UART_LSR_PE)
             flag = TTY_PARITY;
           else if (status & UART_LSR_FE)
@@ -331,7 +330,7 @@ static void receive_chars(struct serial_state *info)
         tty_insert_flip_char(&info->tport, ch, flag);
         if (oe == 1)
                 tty_insert_flip_char(&info->tport, 0, TTY_OVERRUN);
-        tty_flip_buffer_push(tty);
+        tty_flip_buffer_push(&info->tport);
 out:
         return;
 }