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>
diff --git a/arch/ia64/hp/sim/simserial.c b/arch/ia64/hp/sim/simserial.c
index da2f319..e70cade 100644
--- a/arch/ia64/hp/sim/simserial.c
+++ b/arch/ia64/hp/sim/simserial.c
@@ -142,8 +142,7 @@
goto out;
}
- if (info->xmit.head == info->xmit.tail || tty->stopped ||
- tty->hw_stopped) {
+ if (info->xmit.head == info->xmit.tail || tty->stopped) {
#ifdef SIMSERIAL_DEBUG
printk("transmit_chars: head=%d, tail=%d, stopped=%d\n",
info->xmit.head, info->xmit.tail, tty->stopped);
@@ -181,7 +180,7 @@
struct serial_state *info = tty->driver_data;
if (info->xmit.head == info->xmit.tail || tty->stopped ||
- tty->hw_stopped || !info->xmit.buf)
+ !info->xmit.buf)
return;
transmit_chars(tty, info, NULL);
@@ -217,7 +216,7 @@
* Hey, we transmit directly from here in our case
*/
if (CIRC_CNT(info->xmit.head, info->xmit.tail, SERIAL_XMIT_SIZE) &&
- !tty->stopped && !tty->hw_stopped)
+ !tty->stopped)
transmit_chars(tty, info, NULL);
return ret;
@@ -325,14 +324,6 @@
#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
-static void 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;
- }
-}
/*
* This routine will shutdown a serial port; interrupts are disabled, and
* DTR is dropped if the hangup on close termio flag is on.
@@ -481,7 +472,6 @@
.throttle = rs_throttle,
.unthrottle = rs_unthrottle,
.send_xchar = rs_send_xchar,
- .set_termios = rs_set_termios,
.hangup = rs_hangup,
.proc_fops = &rs_proc_fops,
};
