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Commit beea33d4 authored by Johan Hovold's avatar Johan Hovold
Browse files

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: default avatarJohan Hovold <johan@kernel.org>
parent 91e0efcd

drivers/usb/serial/ch341.c

+14 −14
Original line number Diff line number Diff line
@@ -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);