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/drivers/tty/rocket.c b/drivers/tty/rocket.c
index bbffd7a..f5abc28 100644
--- a/drivers/tty/rocket.c
+++ b/drivers/tty/rocket.c
@@ -449,7 +449,7 @@
/* Loop sending data to FIFO until done or FIFO full */
while (1) {
- if (tty->stopped || tty->hw_stopped)
+ if (tty->stopped)
break;
c = min(info->xmit_fifo_room, info->xmit_cnt);
c = min(c, XMIT_BUF_SIZE - info->xmit_tail);
@@ -1106,15 +1106,12 @@
/* Handle transition away from B0 status */
if (!(old_termios->c_cflag & CBAUD) && (tty->termios.c_cflag & CBAUD)) {
- if (!tty->hw_stopped || !(tty->termios.c_cflag & CRTSCTS))
- sSetRTS(cp);
+ sSetRTS(cp);
sSetDTR(cp);
}
- if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios.c_cflag & CRTSCTS)) {
- tty->hw_stopped = 0;
+ if ((old_termios->c_cflag & CRTSCTS) && !(tty->termios.c_cflag & CRTSCTS))
rp_start(tty);
- }
}
static int rp_break(struct tty_struct *tty, int break_state)
@@ -1570,10 +1567,10 @@
spin_lock_irqsave(&info->slock, flags);
cp = &info->channel;
- if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room == 0)
+ if (!tty->stopped && info->xmit_fifo_room == 0)
info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
- if (tty->stopped || tty->hw_stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
+ if (tty->stopped || info->xmit_fifo_room == 0 || info->xmit_cnt != 0) {
info->xmit_buf[info->xmit_head++] = ch;
info->xmit_head &= XMIT_BUF_SIZE - 1;
info->xmit_cnt++;
@@ -1614,14 +1611,14 @@
#endif
cp = &info->channel;
- if (!tty->stopped && !tty->hw_stopped && info->xmit_fifo_room < count)
+ if (!tty->stopped && info->xmit_fifo_room < count)
info->xmit_fifo_room = TXFIFO_SIZE - sGetTxCnt(cp);
/*
* If the write queue for the port is empty, and there is FIFO space, stuff bytes
* into FIFO. Use the write queue for temp storage.
*/
- if (!tty->stopped && !tty->hw_stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
+ if (!tty->stopped && info->xmit_cnt == 0 && info->xmit_fifo_room > 0) {
c = min(count, info->xmit_fifo_room);
b = buf;
@@ -1669,7 +1666,7 @@
retval += c;
}
- if ((retval > 0) && !tty->stopped && !tty->hw_stopped)
+ if ((retval > 0) && !tty->stopped)
set_bit((info->aiop * 8) + info->chan, (void *) &xmit_flags[info->board]);
end:
diff --git a/drivers/tty/serial/68328serial.c b/drivers/tty/serial/68328serial.c
index 4939947..ef2e08e 100644
--- a/drivers/tty/serial/68328serial.c
+++ b/drivers/tty/serial/68328serial.c
@@ -630,8 +630,7 @@
/* Enable transmitter */
local_irq_save(flags);
- if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
- !info->xmit_buf) {
+ if (info->xmit_cnt <= 0 || tty->stopped || !info->xmit_buf) {
local_irq_restore(flags);
return;
}
@@ -697,7 +696,7 @@
total += c;
}
- if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) {
+ if (info->xmit_cnt && !tty->stopped) {
/* Enable transmitter */
local_irq_disable();
#ifndef USE_INTS
@@ -978,10 +977,8 @@
change_speed(info, tty);
if ((old_termios->c_cflag & CRTSCTS) &&
- !(tty->termios.c_cflag & CRTSCTS)) {
- tty->hw_stopped = 0;
+ !(tty->termios.c_cflag & CRTSCTS))
rs_start(tty);
- }
}
diff --git a/drivers/tty/serial/arc_uart.c b/drivers/tty/serial/arc_uart.c
index d97e194..cbf1d15 100644
--- a/drivers/tty/serial/arc_uart.c
+++ b/drivers/tty/serial/arc_uart.c
@@ -162,7 +162,7 @@
/*
* Driver internal routine, used by both tty(serial core) as well as tx-isr
* -Called under spinlock in either cases
- * -also tty->stopped / tty->hw_stopped has already been checked
+ * -also tty->stopped has already been checked
* = by uart_start( ) before calling us
* = tx_ist checks that too before calling
*/
diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c
index 5f37c31..50f56f3 100644
--- a/drivers/tty/serial/crisv10.c
+++ b/drivers/tty/serial/crisv10.c
@@ -2534,8 +2534,7 @@
}
/* 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 @@
if (info->tr_running ||
info->xmit.head == info->xmit.tail ||
tty->stopped ||
- tty->hw_stopped ||
!info->xmit.buf)
return;
@@ -3176,7 +3174,6 @@
if (info->xmit.head != info->xmit.tail &&
!tty->stopped &&
- !tty->hw_stopped &&
!info->tr_running) {
start_transmit(info);
}
@@ -3733,10 +3730,8 @@
/* 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 @@
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);
}
{