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path: root/drivers/tty/tty_buffer.c
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Diffstat (limited to 'drivers/tty/tty_buffer.c')
-rw-r--r--drivers/tty/tty_buffer.c22
1 files changed, 10 insertions, 12 deletions
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index 578aa7594b1..9121c1f7aee 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -449,11 +449,6 @@ static void flush_to_ldisc(struct work_struct *work)
tty_buffer_free(port, head);
continue;
}
- /* Ldisc or user is trying to flush the buffers
- we are feeding to the ldisc, stop feeding the
- line discipline as we want to empty the queue */
- if (test_bit(TTYP_FLUSHPENDING, &port->iflags))
- break;
if (!tty->receive_room)
break;
if (count > tty->receive_room)
@@ -465,17 +460,20 @@ static void flush_to_ldisc(struct work_struct *work)
disc->ops->receive_buf(tty, char_buf,
flag_buf, count);
spin_lock_irqsave(&buf->lock, flags);
+ /* Ldisc or user is trying to flush the buffers.
+ We may have a deferred request to flush the
+ input buffer, if so pull the chain under the lock
+ and empty the queue */
+ if (test_bit(TTYP_FLUSHPENDING, &port->iflags)) {
+ __tty_buffer_flush(port);
+ clear_bit(TTYP_FLUSHPENDING, &port->iflags);
+ wake_up(&tty->read_wait);
+ break;
+ }
}
clear_bit(TTYP_FLUSHING, &port->iflags);
}
- /* We may have a deferred request to flush the input buffer,
- if so pull the chain under the lock and empty the queue */
- if (test_bit(TTYP_FLUSHPENDING, &port->iflags)) {
- __tty_buffer_flush(port);
- clear_bit(TTYP_FLUSHPENDING, &port->iflags);
- wake_up(&tty->read_wait);
- }
spin_unlock_irqrestore(&buf->lock, flags);
tty_ldisc_deref(disc);