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Commit 63a71744 authored by Jag Raman's avatar Jag Raman Committed by David S. Miller
Browse files

sparc64: vcc: Add open & close TTY operations 



Add handlers to support TTY open & close operations

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 103b9b0b

drivers/tty/vcc.c

+62 −1
Original line number Diff line number Diff line
@@ -746,7 +746,68 @@ static struct vio_driver vcc_driver = { 
	.name		= "vcc",

};



static const struct tty_operations vcc_ops;

static int vcc_open(struct tty_struct *tty, struct file *vcc_file)

{

	struct vcc_port *port;



	if (unlikely(!tty)) {

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

		return -ENXIO;

	}



	if (tty->count > 1)

		return -EBUSY;



	port = vcc_get_ne(tty->index);

	if (unlikely(!port)) {

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

		return -ENODEV;

	}



	if (unlikely(!port->vio.lp)) {

		pr_err("VCC: open: LDC channel not configured\n");

		vcc_put(port, false);

		return -EPIPE;

	}

	vccdbgl(port->vio.lp);



	vcc_put(port, false);



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

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

		return -ENXIO;

	}



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

		pr_err("VCC: open: TTY ops not defined\n");

		return -ENXIO;

	}



	return tty_port_open(tty->port, tty, vcc_file);

}



static void vcc_close(struct tty_struct *tty, struct file *vcc_file)

{

	if (unlikely(!tty)) {

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

		return;

	}



	if (unlikely(tty->count > 1))

		return;



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

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

		return;

	}



	tty_port_close(tty->port, tty, vcc_file);

}



static const struct tty_operations vcc_ops = {

	.open	= vcc_open,

	.close	= vcc_close,

};



#define VCC_TTY_FLAGS   (TTY_DRIVER_DYNAMIC_DEV | TTY_DRIVER_REAL_RAW)