n_tty: Unthrottle tty when flushing read buffer
authorKarthik Manamcheri <Karthik.Manamcheri@ni.com>
Wed, 23 Jan 2013 22:36:18 +0000 (16:36 -0600)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Fri, 25 Jan 2013 16:52:23 +0000 (08:52 -0800)
When the tty input buffer is full and thereby throttled,
flushing/resetting the read buffer should unthrottle to allow more
data to be received.

Signed-off-by: Karthik Manamcheri <Karthik.Manamcheri@ni.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
drivers/tty/n_tty.c

index 19083efa2314660b25e0fb5bc793af6fb7e9af57..d5cea3bb01eaeec61b577de6c58a8000412c0c37 100644 (file)
@@ -229,6 +229,8 @@ static void reset_buffer_flags(struct tty_struct *tty)
        ldata->canon_head = ldata->canon_data = ldata->erasing = 0;
        bitmap_zero(ldata->read_flags, N_TTY_BUF_SIZE);
        n_tty_set_room(tty);
+
+       check_unthrottle(tty);
 }
 
 /**