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tty: serial: sh-sci: Fix end of transmission on SCI

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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: Biju 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: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Biju Das 2023-04-12 15:50:53 +01:00 committed by Greg Kroah-Hartman
parent d61ae331d6
commit f06c2a9000
1 changed files with 5 additions and 0 deletions
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5
drivers/tty/serial/sh-sci.c
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@ -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;
}