[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, 4 deletions

diff --git a/drivers/serial/clps711x.c b/drivers/serial/clps711x.c
index 6242f3090a96..e92522b33c48 100644
--- a/drivers/serial/clps711x.c
+++ b/drivers/serial/clps711x.c
@@ -143,10 +143,7 @@ static irqreturn_t clps711xuart_int_rx(int irq, void *dev_id, struct pt_regs *re
                  * CHECK: does overrun affect the current character?
                  * ASSUMPTION: it does not.
                  */
-                if ((ch & port->ignore_status_mask & ~RXSTAT_OVERRUN) == 0)
-                        tty_insert_flip_char(tty, ch, flg);
-                if ((ch & ~port->ignore_status_mask & RXSTAT_OVERRUN) == 0)
-                        tty_insert_flip_char(tty, 0, TTY_OVERRUN);
+                uart_insert_char(port, ch, UARTDR_OVERR, ch, flg);
 
         ignore_char:
                 status = clps_readl(SYSFLG(port));