[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>
diff --git a/drivers/serial/serial_txx9.c b/drivers/serial/serial_txx9.c
index 37b2ef2..3f1051a 100644
--- a/drivers/serial/serial_txx9.c
+++ b/drivers/serial/serial_txx9.c
@@ -350,18 +350,9 @@
}
if (uart_handle_sysrq_char(&up->port, ch, regs))
goto ignore_char;
- if ((disr & up->port.ignore_status_mask) == 0) {
- tty_insert_flip_char(tty, ch, flag);
- }
- if ((disr & TXX9_SIDISR_UOER) &&
- 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(&up->port, disr, TXX9_SIDISR_UOER, ch, flag);
+
ignore_char:
disr = sio_in(up, TXX9_SIDISR);
} while (!(disr & TXX9_SIDISR_UVALID) && (max_count-- > 0));