mxser doesn't increase port->icount.buf_overrun at all. Do so if overrun
happens, so that it can be read from the stats.
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
drivers/tty/mxser.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/mxser.c b/drivers/tty/mxser.c
index 10862d4bb885..65ea4baee5eb 100644
--- a/drivers/tty/mxser.c
+++ b/drivers/tty/mxser.c
@@ -1507,7 +1507,8 @@ static bool mxser_receive_chars_new(struct mxser_port *port, u8 status)
while (gdl--) {
u8 ch = inb(port->ioaddr + UART_RX);
- tty_insert_flip_char(&port->port, ch, 0);
+ if (!tty_insert_flip_char(&port->port, ch, 0))
+ port->icount.buf_overrun++;
}
return true;
@@ -1553,8 +1554,10 @@ static u8 mxser_receive_chars_old(struct tty_struct *tty,
port->icount.overrun++;
}
}
- if (!tty_insert_flip_char(&port->port, ch, flag))
+ if (!tty_insert_flip_char(&port->port, ch, flag)) {
+ port->icount.buf_overrun++;
break;
+ }
}
if (hwid)
--
2.33.1
