Commit f06c2a90 authored by Biju Das's avatar Biju Das Committed by Greg Kroah-Hartman
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tty: serial: sh-sci: Fix end of transmission on SCI 



We need to set TE to "0" (i.e., disable serial transmission) to
get the expected behavior of the end of serial transmission.

Signed-off-by: default avatarBiju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/r/20230412145053.114847-6-biju.das.jz@bp.renesas.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent d61ae331

drivers/tty/serial/sh-sci.c

+5 −0
Original line number Diff line number Diff line
@@ -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;

		}