target/linux/ar7/patches-4.1/500-serial_kludge.patch

   1 --- a/drivers/tty/serial/8250/8250_core.c
   2 +++ b/drivers/tty/serial/8250/8250_core.c
   3 @@ -347,6 +347,13 @@ configured less than Maximum supported f
   4                 .rxtrig_bytes   = {1, 4, 8, 14},
   5                 .flags          = UART_CAP_FIFO,
   6         },
   7 +       [PORT_AR7] = {
   8 +               .name           = "TI-AR7",
   9 +               .fifo_size      = 16,
  10 +               .tx_loadsz      = 16,
  11 +               .fcr            = UART_FCR_ENABLE_FIFO | UART_FCR_R_TRIG_00,
  12 +               .flags          = UART_CAP_FIFO | UART_CAP_AFE,
  13 +       },
  14  };
  15
  16  /* Uart divisor latch read */
  17 @@ -3342,7 +3349,11 @@ static void serial8250_console_putchar(s
  18  {
  19         struct uart_8250_port *up = up_to_u8250p(port);
  20
  21 +#ifdef CONFIG_AR7
  22 +       wait_for_xmitr(up, BOTH_EMPTY);
  23 +#else
  24         wait_for_xmitr(up, UART_LSR_THRE);
  25 +#endif
  26         serial_port_out(port, UART_TX, ch);
  27  }
  28