linux-kernel - [PATCH v2 16/22] usb: serial: ti_usb_3410_5052: Raise DTR and RTS flags if speed is not null anymore

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Message-Id: <20160726180002.2398-17-m.othacehe@gmail.com>
Date:	Tue, 26 Jul 2016 19:59:56 +0200
From:	Mathieu OTHACEHE <m.othacehe@...il.com>
To:	johan@...nel.org, gregkh@...uxfoundation.org
Cc:	linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org,
	Mathieu OTHACEHE <m.othacehe@...il.com>
Subject: [PATCH v2 16/22] usb: serial: ti_usb_3410_5052: Raise DTR and RTS flags if speed is not null anymore

If speed is non null anymore, we can raise DTR and RTS flags in
ti_set_termios.

Signed-off-by: Mathieu OTHACEHE <m.othacehe@...il.com>
---
 drivers/usb/serial/ti_usb_3410_5052.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/serial/ti_usb_3410_5052.c b/drivers/usb/serial/ti_usb_3410_5052.c
index d488237..472971b 100644
--- a/drivers/usb/serial/ti_usb_3410_5052.c
+++ b/drivers/usb/serial/ti_usb_3410_5052.c
@@ -1111,6 +1111,9 @@ static void ti_set_termios(struct tty_struct *tty,
 	/* if baud rate is B0, clear RTS and DTR */
 	if (C_BAUD(tty) == B0)
 		mcr &= ~(TI_MCR_DTR | TI_MCR_RTS);
+	else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
+		mcr |= TI_MCR_DTR | TI_MCR_RTS;
+
 	status = ti_set_mcr(tport, mcr);
 	if (status)
 		dev_err(&port->dev,
-- 
2.9.0