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Commit ddca16e4 authored by Johan Hovold's avatar Johan Hovold Committed by Greg Kroah-Hartman
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USB: io_ti: kill private fifo 



Kill private write fifo and use the already allocated port write fifo
instead.

Signed-off-by: default avatarJohan Hovold <jhovold@gmail.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 421ae6e3

drivers/usb/serial/io_ti.c

+5 −17
Original line number Diff line number Diff line
@@ -64,8 +64,6 @@ 


#define EDGE_CLOSING_WAIT	4000	/* in .01 sec */



#define EDGE_OUT_BUF_SIZE	1024





/* Product information read from the Edgeport */

struct product_info {
@@ -93,7 +91,6 @@ struct edgeport_port { 
	spinlock_t ep_lock;

	int ep_read_urb_state;

	int ep_write_urb_in_use;

	struct kfifo write_fifo;

};



struct edgeport_serial {
@@ -1903,7 +1900,7 @@ static void edge_close(struct usb_serial_port *port) 
	usb_kill_urb(port->write_urb);

	edge_port->ep_write_urb_in_use = 0;

	spin_lock_irqsave(&edge_port->ep_lock, flags);

	kfifo_reset_out(&edge_port->write_fifo);

	kfifo_reset_out(&port->write_fifo);

	spin_unlock_irqrestore(&edge_port->ep_lock, flags);



	dev_dbg(&port->dev, "%s - send umpc_close_port\n", __func__);
@@ -1937,7 +1934,7 @@ static int edge_write(struct tty_struct *tty, struct usb_serial_port *port, 
	if (edge_port->close_pending == 1)

		return -ENODEV;



	count = kfifo_in_locked(&edge_port->write_fifo, data, count,

	count = kfifo_in_locked(&port->write_fifo, data, count,

							&edge_port->ep_lock);

	edge_send(port, tty);
@@ -1957,7 +1954,7 @@ static void edge_send(struct usb_serial_port *port, struct tty_struct *tty) 
		return;

	}



	count = kfifo_out(&edge_port->write_fifo,

	count = kfifo_out(&port->write_fifo,

				port->write_urb->transfer_buffer,

				port->bulk_out_size);
@@ -2005,7 +2002,7 @@ static int edge_write_room(struct tty_struct *tty) 
		return 0;



	spin_lock_irqsave(&edge_port->ep_lock, flags);

	room = kfifo_avail(&edge_port->write_fifo);

	room = kfifo_avail(&port->write_fifo);

	spin_unlock_irqrestore(&edge_port->ep_lock, flags);



	dev_dbg(&port->dev, "%s - returns %d\n", __func__, room);
@@ -2022,7 +2019,7 @@ static int edge_chars_in_buffer(struct tty_struct *tty) 
		return 0;



	spin_lock_irqsave(&edge_port->ep_lock, flags);

	chars = kfifo_len(&edge_port->write_fifo);

	chars = kfifo_len(&port->write_fifo);

	spin_unlock_irqrestore(&edge_port->ep_lock, flags);



	dev_dbg(&port->dev, "%s - returns %d\n", __func__, chars);
@@ -2449,13 +2446,6 @@ static int edge_port_probe(struct usb_serial_port *port) 
	if (!edge_port)

		return -ENOMEM;



	ret = kfifo_alloc(&edge_port->write_fifo, EDGE_OUT_BUF_SIZE,

								GFP_KERNEL);

	if (ret) {

		kfree(edge_port);

		return -ENOMEM;

	}



	spin_lock_init(&edge_port->ep_lock);

	edge_port->port = port;

	edge_port->edge_serial = usb_get_serial_data(port->serial);
@@ -2465,7 +2455,6 @@ static int edge_port_probe(struct usb_serial_port *port) 


	ret = edge_create_sysfs_attrs(port);

	if (ret) {

		kfifo_free(&edge_port->write_fifo);

		kfree(edge_port);

		return ret;

	}
@@ -2482,7 +2471,6 @@ static int edge_port_remove(struct usb_serial_port *port) 


	edge_port = usb_get_serial_port_data(port);

	edge_remove_sysfs_attrs(port);

	kfifo_free(&edge_port->write_fifo);

	kfree(edge_port);



	return 0;