| From 77fdbc761d302a90de221ea25ef6bbb47eb64a95 Mon Sep 17 00:00:00 2001 |
| From: Yoshii Takashi <takashi.yoshii.zj@renesas.com> |
| Date: Tue, 23 Aug 2011 08:27:18 +0000 |
| Subject: serial: sh-sci: report CTS as active for get_mctrl |
| |
| sh-sci.c sets hardware up and then let the HW do all flow controls. |
| There is no software code, nor needs to get/set real CTS signal. |
| |
| But, when turning CRTSCTS on through termios, uart_set_termios() in |
| serial_core.c checks CTS, and stops TX if it is inactive at the moment. |
| |
| Because sci_get_mctrl() returns a fixed value DTR|RTS|DSR but CTS, |
| the sequence |
| open -> set CRTSCTS -> write |
| hit the case and stop working, no more outputs. |
| |
| This patch makes sci_get_mctrl() report CTS in addition. |
| |
| Signed-off-by: Takashi YOSHII <takashi.yoshii.zj@renesas.com> |
| Signed-off-by: Paul Mundt <lethal@linux-sh.org> |
| (cherry picked from commit 4480a688b2beaa82ecac269b6e21bf1a26251bf9) |
| |
| Signed-off-by: Simon Horman <horms@verge.net.au> |
| --- |
| drivers/tty/serial/sh-sci.c | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| diff --git a/drivers/tty/serial/sh-sci.c b/drivers/tty/serial/sh-sci.c |
| index bd16da5..afc48ba 100644 |
| --- a/drivers/tty/serial/sh-sci.c |
| +++ b/drivers/tty/serial/sh-sci.c |
| @@ -1083,7 +1083,7 @@ static unsigned int sci_get_mctrl(struct uart_port *port) |
| /* This routine is used for getting signals of: DTR, DCD, DSR, RI, |
| and CTS/RTS */ |
| |
| - return TIOCM_DTR | TIOCM_RTS | TIOCM_DSR; |
| + return TIOCM_DTR | TIOCM_RTS | TIOCM_CTS | TIOCM_DSR; |
| } |
| |
| #ifdef CONFIG_SERIAL_SH_SCI_DMA |
| -- |
| 1.7.10 |
| |
