From: Johan Hovold <johan@kernel.org>
Date: Tue, 29 Dec 2015 12:36:13 +0000 (+0100)
Subject: USB: mxu11x0: fix modem-control handling on B0-transitions
X-Git-Tag: v4.5-rc1~124^2~3^2~3
X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=9631595a253e62a2be7476f99a23ade786829d5f;p=linux.git

USB: mxu11x0: fix modem-control handling on B0-transitions

Make sure to raise DTR and RTS on transitions from B0 and leave the
other bits unchanged.

Signed-off-by: Johan Hovold <johan@kernel.org>
---

diff --git a/drivers/usb/serial/mxu11x0.c b/drivers/usb/serial/mxu11x0.c
index c6c4776997fc..c408cd7b4dc6 100644
--- a/drivers/usb/serial/mxu11x0.c
+++ b/drivers/usb/serial/mxu11x0.c
@@ -595,7 +595,7 @@ static void mxu1_set_termios(struct tty_struct *tty,
 	if (C_BAUD(tty) == B0)
 		mcr &= ~(MXU1_MCR_DTR | MXU1_MCR_RTS);
 	else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
-		mcr |= ~(MXU1_MCR_DTR | MXU1_MCR_RTS);
+		mcr |= MXU1_MCR_DTR | MXU1_MCR_RTS;
 
 	status = mxu1_set_mcr(port, mcr);
 	if (status)