diff options
| author | James Morris <james.morris@microsoft.com> | 2019-01-22 14:33:10 -0800 |
|---|---|---|
| committer | James Morris <james.morris@microsoft.com> | 2019-01-22 14:33:10 -0800 |
| commit | 9624d5c9c7ff6836bbf9f9b230fd1fcf3d56f91a (patch) | |
| tree | e9c1e5d2400ad20c5a9cd633b52a42a00d1d98cb /drivers/isdn/i4l/isdn_tty.c | |
| parent | 3e8c73671244af16f1a6042f1c10d13b75cd1156 (diff) | |
| parent | 49a57857aeea06ca831043acbb0fa5e0f50602fd (diff) | |
Merge tag 'v5.0-rc3' into next-general
Sync to Linux 5.0-rc3 to pull in the VFS changes which impacted a lot
of the LSM code.
Diffstat (limited to 'drivers/isdn/i4l/isdn_tty.c')
| -rw-r--r-- | drivers/isdn/i4l/isdn_tty.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/isdn/i4l/isdn_tty.c b/drivers/isdn/i4l/isdn_tty.c index 1b2239c1d569..dc1cded716c1 100644 --- a/drivers/isdn/i4l/isdn_tty.c +++ b/drivers/isdn/i4l/isdn_tty.c @@ -1437,15 +1437,19 @@ isdn_tty_set_termios(struct tty_struct *tty, struct ktermios *old_termios) { modem_info *info = (modem_info *) tty->driver_data; + mutex_lock(&modem_info_mutex); if (!old_termios) isdn_tty_change_speed(info); else { if (tty->termios.c_cflag == old_termios->c_cflag && tty->termios.c_ispeed == old_termios->c_ispeed && - tty->termios.c_ospeed == old_termios->c_ospeed) + tty->termios.c_ospeed == old_termios->c_ospeed) { + mutex_unlock(&modem_info_mutex); return; + } isdn_tty_change_speed(info); } + mutex_unlock(&modem_info_mutex); } /* |