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path: root/drivers/char/tty_ioctl.c
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Diffstat (limited to 'drivers/char/tty_ioctl.c')
-rw-r--r--drivers/char/tty_ioctl.c32
1 files changed, 8 insertions, 24 deletions
diff --git a/drivers/char/tty_ioctl.c b/drivers/char/tty_ioctl.c
index fd471cb3338f..3423e9ee6481 100644
--- a/drivers/char/tty_ioctl.c
+++ b/drivers/char/tty_ioctl.c
@@ -52,8 +52,6 @@
void tty_wait_until_sent(struct tty_struct * tty, long timeout)
{
- DECLARE_WAITQUEUE(wait, current);
-
#ifdef TTY_DEBUG_WAIT_UNTIL_SENT
char buf[64];
@@ -61,26 +59,13 @@ void tty_wait_until_sent(struct tty_struct * tty, long timeout)
#endif
if (!tty->driver->chars_in_buffer)
return;
- add_wait_queue(&tty->write_wait, &wait);
if (!timeout)
timeout = MAX_SCHEDULE_TIMEOUT;
- do {
-#ifdef TTY_DEBUG_WAIT_UNTIL_SENT
- printk(KERN_DEBUG "waiting %s...(%d)\n", tty_name(tty, buf),
- tty->driver->chars_in_buffer(tty));
-#endif
- set_current_state(TASK_INTERRUPTIBLE);
- if (signal_pending(current))
- goto stop_waiting;
- if (!tty->driver->chars_in_buffer(tty))
- break;
- timeout = schedule_timeout(timeout);
- } while (timeout);
+ if (wait_event_interruptible_timeout(tty->write_wait,
+ !tty->driver->chars_in_buffer(tty), timeout))
+ return;
if (tty->driver->wait_until_sent)
tty->driver->wait_until_sent(tty, timeout);
-stop_waiting:
- set_current_state(TASK_RUNNING);
- remove_wait_queue(&tty->write_wait, &wait);
}
EXPORT_SYMBOL(tty_wait_until_sent);
@@ -276,13 +261,12 @@ void tty_termios_encode_baud_rate(struct ktermios *termios, speed_t ibaud, speed
termios->c_cflag |= (baud_bits[i] << IBSHIFT);
ifound = i;
}
- }
- while(++i < n_baud_table);
+ } while (++i < n_baud_table);
if (ofound == -1)
termios->c_cflag |= BOTHER;
/* Set exact input bits only if the input and output differ or the
user already did */
- if (ifound == -1 && (ibaud != obaud || ibinput))
+ if (ifound == -1 && (ibaud != obaud || ibinput))
termios->c_cflag |= (BOTHER << IBSHIFT);
}
@@ -575,7 +559,7 @@ static int set_sgttyb(struct tty_struct * tty, struct sgttyb __user * sgttyb)
return -EFAULT;
mutex_lock(&tty->termios_mutex);
- termios = *tty->termios;
+ termios = *tty->termios;
termios.c_cc[VERASE] = tmp.sg_erase;
termios.c_cc[VKILL] = tmp.sg_kill;
set_sgflags(&termios, tmp.sg_flags);
@@ -667,7 +651,7 @@ static int send_prio_char(struct tty_struct *tty, char ch)
return 0;
}
- if (mutex_lock_interruptible(&tty->atomic_write_lock))
+ if (tty_write_lock(tty, 0) < 0)
return -ERESTARTSYS;
if (was_stopped)
@@ -675,7 +659,7 @@ static int send_prio_char(struct tty_struct *tty, char ch)
tty->driver->write(tty, &ch, 1);
if (was_stopped)
stop_tty(tty);
- mutex_unlock(&tty->atomic_write_lock);
+ tty_write_unlock(tty);
return 0;
}