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Commit 6a3ff25b authored by Jag Raman's avatar Jag Raman Committed by David S. Miller
Browse files

sparc64: vcc: Add hangup TTY operation 



Add handler to support TTY hangup operation

Signed-off-by: default avatarJagannathan Raman <jag.raman@oracle.com>
Reviewed-by: default avatarLiam Merwick <liam.merwick@oracle.com>
Reviewed-by: default avatarShannon Nelson <shannon.nelson@oracle.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 63a71744

drivers/tty/vcc.c

+41 −0
Original line number Diff line number Diff line
@@ -804,9 +804,50 @@ static void vcc_close(struct tty_struct *tty, struct file *vcc_file) 
	tty_port_close(tty->port, tty, vcc_file);

}



static void vcc_ldc_hup(struct vcc_port *port)

{

	unsigned long flags;



	spin_lock_irqsave(&port->lock, flags);



	if (vcc_send_ctl(port, VCC_CTL_HUP) < 0)

		vcc_kick_tx(port);



	spin_unlock_irqrestore(&port->lock, flags);

}



static void vcc_hangup(struct tty_struct *tty)

{

	struct vcc_port *port;



	if (unlikely(!tty)) {

		pr_err("VCC: hangup: Invalid TTY handle\n");

		return;

	}



	port = vcc_get_ne(tty->index);

	if (unlikely(!port)) {

		pr_err("VCC: hangup: Failed to find VCC port\n");

		return;

	}



	if (unlikely(!tty->port)) {

		pr_err("VCC: hangup: TTY port not found\n");

		vcc_put(port, false);

		return;

	}



	vcc_ldc_hup(port);



	vcc_put(port, false);



	tty_port_hangup(tty->port);

}



static const struct tty_operations vcc_ops = {

	.open	= vcc_open,

	.close	= vcc_close,

	.hangup	= vcc_hangup,

};



#define VCC_TTY_FLAGS   (TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_REAL_RAW)