--- zzzz-none-000/linux-3.10.107/drivers/tty/serial/68328serial.c 2017-06-27 09:49:32.000000000 +0000 +++ scorpion-7490-727/linux-3.10.107/drivers/tty/serial/68328serial.c 2021-02-04 17:41:59.000000000 +0000 @@ -508,7 +508,8 @@ int i; cflag = tty->termios.c_cflag; - if (!(port = info->port)) + port = info->port; + if (!port) return; ustcnt = uart->ustcnt; @@ -559,8 +560,8 @@ struct m68k_serial *info = &m68k_soft[0]; char c; - if (info == 0) return; - if (info->xmit_buf == 0) return; + if (info == NULL) return; + if (info->xmit_buf == NULL) return; local_irq_save(flags); left = info->xmit_cnt; @@ -1070,7 +1071,6 @@ wake_up_interruptible(&port->open_wait); } port->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CLOSING); - wake_up_interruptible(&port->close_wait); local_irq_restore(flags); }