TTY: cleanup tty->hw_stopped uses

tty->hw_stopped is set only by drivers to remember HW state. If it is
never set to 1 in a particular driver, there is no need to check it in
the driver at all. Remove such checks.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 2 insertions, 10 deletions

diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c
index 5f37c31e32bc..50f56f39d436 100644
--- a/drivers/tty/serial/crisv10.c
+++ b/drivers/tty/serial/crisv10.c
@@ -2534,8 +2534,7 @@ static void handle_ser_tx_interrupt(struct e100_serial *info)
         }
         /* Normal char-by-char interrupt */
         if (info->xmit.head == info->xmit.tail
-            || info->port.tty->stopped
-            || info->port.tty->hw_stopped) {
+            || info->port.tty->stopped) {
                 DFLOW(DEBUG_LOG(info->line, "tx_int: stopped %i\n",
                                 info->port.tty->stopped));
                 e100_disable_serial_tx_ready_irq(info);
@@ -3098,7 +3097,6 @@ rs_flush_chars(struct tty_struct *tty)
         if (info->tr_running ||
             info->xmit.head == info->xmit.tail ||
             tty->stopped ||
-            tty->hw_stopped ||
             !info->xmit.buf)
                 return;
 
@@ -3176,7 +3174,6 @@ static int rs_raw_write(struct tty_struct *tty,
 
         if (info->xmit.head != info->xmit.tail &&
             !tty->stopped &&
-            !tty->hw_stopped &&
             !info->tr_running) {
                 start_transmit(info);
         }
@@ -3733,10 +3730,8 @@ rs_set_termios(struct tty_struct *tty, struct ktermios *old_termios)
 
         /* Handle turning off CRTSCTS */
         if ((old_termios->c_cflag & CRTSCTS) &&
-            !(tty->termios.c_cflag & CRTSCTS)) {
-                tty->hw_stopped = 0;
+            !(tty->termios.c_cflag & CRTSCTS))
                 rs_start(tty);
-        }
 
 }
 
@@ -4256,9 +4251,6 @@ static void seq_line_info(struct seq_file *m, struct e100_serial *info)
                 if (info->port.tty->stopped)
                         seq_printf(m, " stopped:%i",
                                    (int)info->port.tty->stopped);
-                if (info->port.tty->hw_stopped)
-                        seq_printf(m, " hw_stopped:%i",
-                                   (int)info->port.tty->hw_stopped);
         }
 
         {