The mxs-auart driver does not count FIFO overrun errors. These errors never
appear in /proc/tty/driver/ttyAPP. This is because the OERR status bit is
masked by read_status_mask in the rx interrupt function, but the
AUART_STAT_OERR bit is never set in read_status_mask. The patch enables the
counting of overrun errors.

Signed-off-by: Wolfgang Ocker <redacted>
---
?drivers/tty/serial/mxs-auart.c | 2 +-
?1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/mxs-auart.c b/drivers/tty/serial/mxs-auart.c
index 770454e0dfa3..8c1c9112b3fd 100644
--- a/drivers/tty/serial/mxs-auart.c
+++ b/drivers/tty/serial/mxs-auart.c

@@ -1016,7 +1016,7 @@ static void mxs_auart_settermios(struct uart_port *u,

?			ctrl |= AUART_LINECTRL_EPS;
?	}
?
-	u->read_status_mask = 0;
+	u->read_status_mask = AUART_STAT_OERR;
?
?	if (termios->c_iflag & INPCK)
?		u->read_status_mask |= AUART_STAT_PERR;
--?
2.10.0