serial: sirf: add uart receive's some error counter and mark

add overrun error's flag mark and parity's counter, we can show the
statistic from procfs node.

BTW, let the indentation of stick bits configuration look better.

Signed-off-by: Qipan Li <Qipan.Li@csr.com>
Signed-off-by: Barry Song <Baohua.Song@csr.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c
index ffeb7663bd6e863809f458a94c573ce7b7ed3e8e..a5007216338d0229470407ee774f3f389d966955 100644 (file)
--- a/drivers/tty/serial/sirfsoc_uart.c
+++ b/drivers/tty/serial/sirfsoc_uart.c
@@ -606,14 +606,18 @@ static irqreturn_t sirfsoc_uart_isr(int irq, void *dev_id)
                        if (uart_handle_break(port))
                                goto recv_char;
                }
-               if (intr_status & uint_st->sirfsoc_rx_oflow)
+               if (intr_status & uint_st->sirfsoc_rx_oflow) {
                        port->icount.overrun++;
+                       flag = TTY_OVERRUN;
+               }
                if (intr_status & uint_st->sirfsoc_frm_err) {
                        port->icount.frame++;
                        flag = TTY_FRAME;
                }
-               if (intr_status & uint_st->sirfsoc_parity_err)
+               if (intr_status & uint_st->sirfsoc_parity_err) {
+                       port->icount.parity++;
                        flag = TTY_PARITY;
+               }
                wr_regl(port, ureg->sirfsoc_rx_fifo_op, SIRFUART_FIFO_RESET);
                wr_regl(port, ureg->sirfsoc_rx_fifo_op, 0);
                wr_regl(port, ureg->sirfsoc_rx_fifo_op, SIRFUART_FIFO_START);
@@ -932,10 +936,11 @@ static void sirfsoc_uart_set_termios(struct uart_port *port,
                                        config_reg |= SIRFUART_STICK_BIT_MARK;
                                else
                                        config_reg |= SIRFUART_STICK_BIT_SPACE;
-                       } else if (termios->c_cflag & PARODD) {
-                               config_reg |= SIRFUART_STICK_BIT_ODD;
                        } else {
-                               config_reg |= SIRFUART_STICK_BIT_EVEN;
+                               if (termios->c_cflag & PARODD)
+                                       config_reg |= SIRFUART_STICK_BIT_ODD;
+                               else
+                                       config_reg |= SIRFUART_STICK_BIT_EVEN;
                        }
                }
        } else {