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-rw-r--r--drivers/tty/tty_buffer.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/tty/tty_buffer.c b/drivers/tty/tty_buffer.c
index 91e326ffe7db..8b00f6a34a7d 100644
--- a/drivers/tty/tty_buffer.c
+++ b/drivers/tty/tty_buffer.c
@@ -342,6 +342,8 @@ EXPORT_SYMBOL(tty_insert_flip_string_flags);
* Takes any pending buffers and transfers their ownership to the
* ldisc side of the queue. It then schedules those characters for
* processing by the line discipline.
+ * Note that this function can only be used when the low_latency flag
+ * is unset. Otherwise the workqueue won't be flushed.
*
* Locking: Takes tty->buf.lock
*/
@@ -514,7 +516,8 @@ static void flush_to_ldisc(struct work_struct *work)
*/
void tty_flush_to_ldisc(struct tty_struct *tty)
{
- flush_work(&tty->buf.work);
+ if (!tty->low_latency)
+ flush_work(&tty->buf.work);
}
/**