USB: serial: ch341: rename shadow modem-control register

Rename the shadow modem-control register currently named "line_control"
to the less confusing "mcr".

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

diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index 84c10b63732b29c026eba841d07c411071209a1f..cab7e2ca4e477db565c4f102befce9c89e11e105 100644 (file)
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -93,7 +93,7 @@ MODULE_DEVICE_TABLE(usb, id_table);
 struct ch341_private {
        spinlock_t lock; /* access lock */
        unsigned baud_rate; /* set baud rate */
-       u8 line_control; /* set line control value RTS/DTR */
+       u8 mcr;
        u8 line_status; /* active status of modem control inputs */
        u8 lcr;
 };
@@ -251,7 +251,7 @@ static int ch341_configure(struct usb_device *dev, struct ch341_private *priv)
        if (r < 0)
                goto out;
 
-       r = ch341_set_handshake(dev, priv->line_control);
+       r = ch341_set_handshake(dev, priv->mcr);
 
 out:   kfree(buffer);
        return r;
@@ -306,11 +306,11 @@ static void ch341_dtr_rts(struct usb_serial_port *port, int on)
        /* drop DTR and RTS */
        spin_lock_irqsave(&priv->lock, flags);
        if (on)
-               priv->line_control |= CH341_BIT_RTS | CH341_BIT_DTR;
+               priv->mcr |= CH341_BIT_RTS | CH341_BIT_DTR;
        else
-               priv->line_control &= ~(CH341_BIT_RTS | CH341_BIT_DTR);
+               priv->mcr &= ~(CH341_BIT_RTS | CH341_BIT_DTR);
        spin_unlock_irqrestore(&priv->lock, flags);
-       ch341_set_handshake(port->serial->dev, priv->line_control);
+       ch341_set_handshake(port->serial->dev, priv->mcr);
 }
 
 static void ch341_close(struct usb_serial_port *port)
@@ -415,12 +415,12 @@ static void ch341_set_termios(struct tty_struct *tty,
 
        spin_lock_irqsave(&priv->lock, flags);
        if (C_BAUD(tty) == B0)
-               priv->line_control &= ~(CH341_BIT_DTR | CH341_BIT_RTS);
+               priv->mcr &= ~(CH341_BIT_DTR | CH341_BIT_RTS);
        else if (old_termios && (old_termios->c_cflag & CBAUD) == B0)
-               priv->line_control |= (CH341_BIT_DTR | CH341_BIT_RTS);
+               priv->mcr |= (CH341_BIT_DTR | CH341_BIT_RTS);
        spin_unlock_irqrestore(&priv->lock, flags);
 
-       ch341_set_handshake(port->serial->dev, priv->line_control);
+       ch341_set_handshake(port->serial->dev, priv->mcr);
 }
 
 static void ch341_break_ctl(struct tty_struct *tty, int break_state)
@@ -476,14 +476,14 @@ static int ch341_tiocmset(struct tty_struct *tty,
 
        spin_lock_irqsave(&priv->lock, flags);
        if (set & TIOCM_RTS)
-               priv->line_control |= CH341_BIT_RTS;
+               priv->mcr |= CH341_BIT_RTS;
        if (set & TIOCM_DTR)
-               priv->line_control |= CH341_BIT_DTR;
+               priv->mcr |= CH341_BIT_DTR;
        if (clear & TIOCM_RTS)
-               priv->line_control &= ~CH341_BIT_RTS;
+               priv->mcr &= ~CH341_BIT_RTS;
        if (clear & TIOCM_DTR)
-               priv->line_control &= ~CH341_BIT_DTR;
-       control = priv->line_control;
+               priv->mcr &= ~CH341_BIT_DTR;
+       control = priv->mcr;
        spin_unlock_irqrestore(&priv->lock, flags);
 
        return ch341_set_handshake(port->serial->dev, control);
@@ -577,7 +577,7 @@ static int ch341_tiocmget(struct tty_struct *tty)
        unsigned int result;
 
        spin_lock_irqsave(&priv->lock, flags);
-       mcr = priv->line_control;
+       mcr = priv->mcr;
        status = priv->line_status;
        spin_unlock_irqrestore(&priv->lock, flags);