[smart] fixup rt_hw_serial_unregister_tty of serial tty

Mutex lock should be taken before release the TTY device. Signed-off-by: Shell <smokewood@qq.com>
2024-04-19 10:59:21 +08:00 · 2024-04-19 10:59:21 +08:00 · 732d32be09
parent 57d157b8ab
commit 732d32be09
1 changed files with 2 additions and 0 deletions
--- a/components/drivers/serial/serial_tty.c
+++ b/components/drivers/serial/serial_tty.c
@ -358,6 +358,8 @@ rt_err_t rt_hw_serial_unregister_tty(struct rt_serial_device *serial)
    softc = tty_softc(tp);
    serial->rx_notify = softc->backup_notify;

+    tty_lock(tp);
+
    tty_rel_gone(tp);

    /* device unregister? */