summaryrefslogtreecommitdiff
path: root/drivers/tty/n_tty.c
diff options
context:
space:
mode:
authorPeter Hurley <peter@hurleysoftware.com>2016-01-10 08:45:13 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2016-01-28 22:58:02 +0300
commitffb91a459c6cacb10972f5dff893fb1292bac85d (patch)
tree663966919757c58a0f737ad50f98594f7d93b081 /drivers/tty/n_tty.c
parent7bccc36544a8b4a7d768f8ccdd6001a52872aca9 (diff)
downloadlinux-ffb91a459c6cacb10972f5dff893fb1292bac85d.tar.xz
n_tty: Remove tty count checks from unthrottle
Since n_tty_check_unthrottle() is only called from n_tty_read() which only originates from a userspace read(), the tty count cannot be 0; the read() guarantees the file descriptor has not yet been released. Signed-off-by: Peter Hurley <peter@hurleysoftware.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/n_tty.c')
-rw-r--r--drivers/tty/n_tty.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/drivers/tty/n_tty.c b/drivers/tty/n_tty.c
index 086fd9983caa..5ae661cd236e 100644
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -261,8 +261,6 @@ static void n_tty_check_unthrottle(struct tty_struct *tty)
if (tty->driver->type == TTY_DRIVER_TYPE_PTY) {
if (chars_in_buffer(tty) > TTY_THRESHOLD_UNTHROTTLE)
return;
- if (!tty->count)
- return;
n_tty_kick_worker(tty);
tty_wakeup(tty->link);
return;
@@ -281,8 +279,6 @@ static void n_tty_check_unthrottle(struct tty_struct *tty)
tty_set_flow_change(tty, TTY_UNTHROTTLE_SAFE);
if (chars_in_buffer(tty) > TTY_THRESHOLD_UNTHROTTLE)
break;
- if (!tty->count)
- break;
n_tty_kick_worker(tty);
unthrottled = tty_unthrottle_safe(tty);
if (!unthrottled)