[PATCH] Serial: Add uart_insert_char()

Add uart_insert_char(), which handles inserting characters into the
flip buffer.  This helper function handles the correct semantics
for handling overrun in addition to inserting normal characters.

Signed-off-by: Russell King <rmk@arm.linux.org.uk>

1 files changed, 1 insertions, 12 deletions

diff --git a/drivers/serial/serial_lh7a40x.c b/drivers/serial/serial_lh7a40x.c
index 85cfa08d3bad..56f269b6bfb1 100644
--- a/drivers/serial/serial_lh7a40x.c
+++ b/drivers/serial/serial_lh7a40x.c
@@ -190,18 +190,7 @@ lh7a40xuart_rx_chars (struct uart_port* port)
                 if (uart_handle_sysrq_char (port, (unsigned char) data, regs))
                         continue;
 
-                if ((data & port->ignore_status_mask) == 0) {
-                        tty_insert_flip_char(tty, data, flag);
-                }
-                if ((data & RxOverrunError)
-                    && tty->flip.count < TTY_FLIPBUF_SIZE) {
-                        /*
-                         * Overrun is special, since it's reported
-                         * immediately, and doesn't affect the current
-                         * character
-                         */
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
-                }
+                uart_insert_char(port, data, RxOverrunError, data, flag);
         }
         tty_flip_buffer_push (tty);
         return;