diff options
| -rw-r--r-- | drivers/tty/serial/8250/8250_port.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/tty/serial/8250/8250_port.c b/drivers/tty/serial/8250/8250_port.c index de6655d50c37..54e6c8ddef5d 100644 --- a/drivers/tty/serial/8250/8250_port.c +++ b/drivers/tty/serial/8250/8250_port.c @@ -1834,6 +1834,21 @@ int serial8250_do_startup(struct uart_port *port) */ enable_rsa(up); #endif + + if (port->type == PORT_XR17V35X) { + /* + * First enable access to IER [7:5], ISR [5:4], FCR [5:4], + * MCR [7:5] and MSR [7:0] + */ + serial_port_out(port, UART_XR_EFR, UART_EFR_ECB); + + /* + * Make sure all interrups are masked until initialization is + * complete and the FIFOs are cleared + */ + serial_port_out(port, UART_IER, 0); + } + /* * Clear the FIFO buffers and disable them. * (they will be reenabled in set_termios()) |