User-space read() can run concurrently with receiving from device;
waiting for receive_buf() to complete is not required.
Signed-off-by: Peter Hurley <peter@xxxxxxxxxxxxxxxxxx>
---
drivers/tty/n_tty.c | 1 -
1 file changed, 1 deletion(-)
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index fe1c399..a6eea30 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -1724,7 +1724,6 @@ static inline int input_available_p(struct tty_struct *tty, int amt)
{
struct n_tty_data *ldata = tty->disc_data;
- tty_flush_to_ldisc(tty);
if (ldata->icanon && !L_EXTPROC(tty)) {
if (ldata->canon_head != ldata->read_tail)
return 1;
--
1.8.1.2
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