We need to set TE to "0" (i.e., disable serial transmission) to
get the behavior of the end of serial transmission as expected.
Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
v3:
New patch. split from patch#3.
---
drivers/tty/serial/sh-sci.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c
index 5c9ae69c0555..7c9457962a3d 100644
--- a/drivers/tty/serial/sh-sci.c
+++ b/drivers/tty/serial/sh-sci.c
@@ -847,6 +847,11 @@ static void sci_transmit_chars(struct uart_port *port)
} else if (!uart_circ_empty(xmit) && !stopped) {
c = xmit->buf[xmit->tail];
xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
+ } else if (port->type == PORT_SCI && uart_circ_empty(xmit)) {
+ ctrl = serial_port_in(port, SCSCR);
+ ctrl &= ~SCSCR_TE;
+ serial_port_out(port, SCSCR, ctrl);
+ return;
} else {
break;
}
--
2.25.1
