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| author | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2015-12-15 14:51:17 +0100 |
|---|---|---|
| committer | Marcel Ziswiler <marcel.ziswiler@toradex.com> | 2015-12-15 14:51:17 +0100 |
| commit | e6d111cd909551cec5902358db1e25dcaa8c86bb (patch) | |
| tree | 99673aec563c76a1a4d7ca2d31b90b47549ae40b /drivers/tty/tty_io.c | |
| parent | 1dcb97e485420a25461cc44d43f987c8bbf50e7a (diff) | |
| parent | 07cc49f66973f49a391c91bf4b158fa0f2562ca8 (diff) | |
Merge tag 'v4.1.15' into toradex_vf_4.1-nextColibri_VF_LinuxImageV2.5Beta3_20151215
This is the 4.1.15 stable release
Diffstat (limited to 'drivers/tty/tty_io.c')
| -rw-r--r-- | drivers/tty/tty_io.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/tty/tty_io.c b/drivers/tty/tty_io.c index 21837f14a403..5a5c1ab5a375 100644 --- a/drivers/tty/tty_io.c +++ b/drivers/tty/tty_io.c @@ -1287,18 +1287,22 @@ int tty_send_xchar(struct tty_struct *tty, char ch) int was_stopped = tty->stopped; if (tty->ops->send_xchar) { + down_read(&tty->termios_rwsem); tty->ops->send_xchar(tty, ch); + up_read(&tty->termios_rwsem); return 0; } if (tty_write_lock(tty, 0) < 0) return -ERESTARTSYS; + down_read(&tty->termios_rwsem); if (was_stopped) start_tty(tty); tty->ops->write(tty, &ch, 1); if (was_stopped) stop_tty(tty); + up_read(&tty->termios_rwsem); tty_write_unlock(tty); return 0; } |