From 87265b4514f5a0b79efdccdcb1c6331285652640 Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Wed, 26 Jun 2013 16:47:29 +0200 Subject: [PATCH] USB: pl2303: clean up set_termios Clean up set_termios somewhat. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/pl2303.c | 39 +++++++++++++++++-------------------- 1 file changed, 18 insertions(+), 21 deletions(-) diff --git a/drivers/usb/serial/pl2303.c b/drivers/usb/serial/pl2303.c index dd59c640edcc..91f14c6950f9 100644 --- a/drivers/usb/serial/pl2303.c +++ b/drivers/usb/serial/pl2303.c @@ -335,20 +335,18 @@ static void pl2303_set_termios(struct tty_struct *tty, struct pl2303_serial_private *spriv = usb_get_serial_data(serial); struct pl2303_private *priv = usb_get_serial_port_data(port); unsigned long flags; - unsigned int cflag; unsigned char *buf; int i; u8 control; - /* The PL2303 is reported to lose bytes if you change - serial settings even to the same values as before. Thus - we actually need to filter in this specific case */ - + /* + * The PL2303 is reported to lose bytes if you change serial settings + * even to the same values as before. Thus we actually need to filter + * in this specific case. + */ if (old_termios && !tty_termios_hw_change(&tty->termios, old_termios)) return; - cflag = tty->termios.c_cflag; - buf = kzalloc(7, GFP_KERNEL); if (!buf) { dev_err(&port->dev, "%s - out of memory.\n", __func__); @@ -363,8 +361,8 @@ static void pl2303_set_termios(struct tty_struct *tty, 0, 0, buf, 7, 100); dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); - if (cflag & CSIZE) { - switch (cflag & CSIZE) { + if (C_CSIZE(tty)) { + switch (C_CSIZE(tty)) { case CS5: buf[6] = 5; break; @@ -377,7 +375,6 @@ static void pl2303_set_termios(struct tty_struct *tty, default: case CS8: buf[6] = 8; - break; } dev_dbg(&port->dev, "data bits = %d\n", buf[6]); } @@ -388,11 +385,12 @@ static void pl2303_set_termios(struct tty_struct *tty, /* For reference buf[4]=0 is 1 stop bits */ /* For reference buf[4]=1 is 1.5 stop bits */ /* For reference buf[4]=2 is 2 stop bits */ - if (cflag & CSTOPB) { - /* NOTE: Comply with "real" UARTs / RS232: + if (C_CSTOPB(tty)) { + /* + * NOTE: Comply with "real" UARTs / RS232: * use 1.5 instead of 2 stop bits with 5 data bits */ - if ((cflag & CSIZE) == CS5) { + if (C_CSIZE(tty) == CS5) { buf[4] = 1; dev_dbg(&port->dev, "stop bits = 1.5\n"); } else { @@ -404,14 +402,14 @@ static void pl2303_set_termios(struct tty_struct *tty, dev_dbg(&port->dev, "stop bits = 1\n"); } - if (cflag & PARENB) { + if (C_PARENB(tty)) { /* For reference buf[5]=0 is none parity */ /* For reference buf[5]=1 is odd parity */ /* For reference buf[5]=2 is even parity */ /* For reference buf[5]=3 is mark parity */ /* For reference buf[5]=4 is space parity */ - if (cflag & PARODD) { - if (cflag & CMSPAR) { + if (C_PARODD(tty)) { + if (tty->termios.c_cflag & CMSPAR) { buf[5] = 3; dev_dbg(&port->dev, "parity = mark\n"); } else { @@ -419,7 +417,7 @@ static void pl2303_set_termios(struct tty_struct *tty, dev_dbg(&port->dev, "parity = odd\n"); } } else { - if (cflag & CMSPAR) { + if (tty->termios.c_cflag & CMSPAR) { buf[5] = 4; dev_dbg(&port->dev, "parity = space\n"); } else { @@ -440,7 +438,7 @@ static void pl2303_set_termios(struct tty_struct *tty, /* change control lines if we are switching to or from B0 */ spin_lock_irqsave(&priv->lock, flags); control = priv->line_control; - if ((cflag & CBAUD) == B0) + if (C_BAUD(tty) == B0) priv->line_control &= ~(CONTROL_DTR | CONTROL_RTS); else if (old_termios && (old_termios->c_cflag & CBAUD) == B0) priv->line_control |= (CONTROL_DTR | CONTROL_RTS); @@ -452,14 +450,13 @@ static void pl2303_set_termios(struct tty_struct *tty, spin_unlock_irqrestore(&priv->lock, flags); } - buf[0] = buf[1] = buf[2] = buf[3] = buf[4] = buf[5] = buf[6] = 0; - + memset(buf, 0, 7); i = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0), GET_LINE_REQUEST, GET_LINE_REQUEST_TYPE, 0, 0, buf, 7, 100); dev_dbg(&port->dev, "0xa1:0x21:0:0 %d - %7ph\n", i, buf); - if (cflag & CRTSCTS) { + if (C_CRTSCTS(tty)) { if (spriv->type == HX) pl2303_vendor_write(0x0, 0x61, serial); else -- 2.39.5