USB: serial: remove vizzini driver

It's out-dated for the tty-layer stuff, and would require a bunch of
work.  That's not really a big deal, the big issue is that there is no
company contact for the hardware, so questions we have about it (like
why isn't this just handled by the cdc-acm driver instead?) go
unanswered.

So drop the driver.  If someone comes along to help answer the
questions, we can easily revert this and fix up the code.

Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Rob Duncan <rob.duncan@exar.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

3 files changed, 0 insertions, 1363 deletions

diff --git a/drivers/usb/serial/Kconfig b/drivers/usb/serial/Kconfig
index a5c144694005..f604f707a058 100644
--- a/drivers/usb/serial/Kconfig
+++ b/drivers/usb/serial/Kconfig
@@ -182,14 +182,6 @@ config USB_SERIAL_VISOR
 	  To compile this driver as a module, choose M here: the
 	  module will be called visor.
 
-config USB_SERIAL_VIZZINI
-	tristate "USB Vizzini Serial Converter Driver"
-	help
-	  Say Y here if you have a Vizzini USB to serial device.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called vizzini.
-
 config USB_SERIAL_IPAQ
 	tristate "USB PocketPC PDA Driver"
 	help
diff --git a/drivers/usb/serial/Makefile b/drivers/usb/serial/Makefile
index 5fd21a01b009..45871f9ad1e1 100644
--- a/drivers/usb/serial/Makefile
+++ b/drivers/usb/serial/Makefile
@@ -59,7 +59,6 @@ obj-$(CONFIG_USB_SERIAL_SYMBOL)			+= symbolserial.o
 obj-$(CONFIG_USB_SERIAL_WWAN)			+= usb_wwan.o
 obj-$(CONFIG_USB_SERIAL_TI)			+= ti_usb_3410_5052.o
 obj-$(CONFIG_USB_SERIAL_VISOR)			+= visor.o
-obj-$(CONFIG_USB_SERIAL_VIZZINI)		+= vizzini.o
 obj-$(CONFIG_USB_SERIAL_WHITEHEAT)		+= whiteheat.o
 obj-$(CONFIG_USB_SERIAL_XIRCOM)			+= keyspan_pda.o
 obj-$(CONFIG_USB_SERIAL_VIVOPAY_SERIAL)		+= vivopay-serial.o
diff --git a/drivers/usb/serial/vizzini.c b/drivers/usb/serial/vizzini.c
deleted file mode 100644
index 7f436949dd99..000000000000
--- a/drivers/usb/serial/vizzini.c
+++ /dev/null
@@ -1,1354 +0,0 @@
-/*
- * vizzini.c
- *
- * Copyright (c) 2011 Exar Corporation, Inc.
- *
- * ChangeLog:
- *            v0.76- Support for 3.0.0 (Ubuntu 11.10) (Removed all Kernel source
- *                   compiler conditions and now the base is Kernel 3.0. Ravi Reddy)
- *            v0.75- Support for 2.6.38.8 (Ubuntu 11.04) - Added
- *                   .usb_driver = &vizzini_driver.
- *            v0.74- Support for 2.6.35.22 (Ubuntu 10.10) - Added
- *                   #include <linux/slab.h> to fix kmalloc/kfree error.
- *            v0.73- Fixed VZIOC_SET_REG (by Ravi Reddy).
- *            v0.72- Support for 2.6.32.21 (by Ravi Reddy, for Ubuntu 10.04).
- *            v0.71- Support for 2.6.31.
- *            v0.5 - Tentative support for compiling with the CentOS 5.1
- *                   kernel (2.6.18-53).
- *            v0.4 - First version.  Lots of stuff lifted from
- *                   cdc-acm.c (credits due to Armin Fuerst, Pavel Machek,
- *                   Johannes Erdfelt, Vojtech Pavlik, David Kubicek) and
- *                   and sierra.c (credit due to Kevin Lloyd).
- */
-
-/*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- */
-
-#define DRIVER_VERSION "v.0.76"
-#define DRIVER_AUTHOR "Rob Duncan <rob.duncan@exar.com>"
-#define DRIVER_DESC "USB Driver for Vizzini USB serial port"
-
-#undef VIZZINI_IWA
-
-
-#include <linux/kernel.h>
-#include <linux/jiffies.h>
-#include <linux/errno.h>
-#include <linux/tty.h>
-#include <linux/tty_flip.h>
-#include <linux/module.h>
-#include <linux/usb.h>
-#include <linux/usb/serial.h>
-#include <linux/serial.h>
-#include <linux/slab.h>
-#include <linux/uaccess.h>
-#include <asm/unaligned.h>
-
-#include <linux/usb/cdc.h>
-#ifndef CDC_DATA_INTERFACE_TYPE
-#define CDC_DATA_INTERFACE_TYPE 0x0a
-#endif
-#ifndef USB_RT_ACM
-#define USB_RT_ACM      (USB_TYPE_CLASS | USB_RECIP_INTERFACE)
-#define ACM_CTRL_DTR            0x01
-#define ACM_CTRL_RTS            0x02
-#define ACM_CTRL_DCD            0x01
-#define ACM_CTRL_DSR            0x02
-#define ACM_CTRL_BRK            0x04
-#define ACM_CTRL_RI             0x08
-#define ACM_CTRL_FRAMING        0x10
-#define ACM_CTRL_PARITY         0x20
-#define ACM_CTRL_OVERRUN        0x40
-#endif
-
-#define XR_SET_REG              0
-#define XR_GETN_REG             1
-
-#define UART_0_REG_BLOCK        0
-#define UART_1_REG_BLOCK        1
-#define UART_2_REG_BLOCK        2
-#define UART_3_REG_BLOCK        3
-#define URM_REG_BLOCK           4
-#define PRM_REG_BLOCK           5
-#define EPMERR_REG_BLOCK        6
-#define RAMCTL_REG_BLOCK        0x64
-#define TWI_ROM_REG_BLOCK       0x65
-#define EPLOCALS_REG_BLOCK      0x66
-
-#define MEM_SHADOW_REG_SIZE_S   5
-#define MEM_SHADOW_REG_SIZE     (1 << MEM_SHADOW_REG_SIZE_S)
-
-#define MEM_EP_LOCALS_SIZE_S    3
-#define MEM_EP_LOCALS_SIZE      (1 << MEM_EP_LOCALS_SIZE_S)
-
-#define EP_WIDE_MODE            0x03
-
-
-#define UART_GPIO_MODE                                     0x01a
-
-#define UART_GPIO_MODE_SEL_M                               0x7
-#define UART_GPIO_MODE_SEL_S                               0
-#define UART_GPIO_MODE_SEL                                 0x007
-
-#define UART_GPIO_MODE_SEL_GPIO                            (0x0 << UART_GPIO_MODE_SEL_S)
-#define UART_GPIO_MODE_SEL_RTS_CTS                         (0x1 << UART_GPIO_MODE_SEL_S)
-#define UART_GPIO_MODE_SEL_DTR_DSR                         (0x2 << UART_GPIO_MODE_SEL_S)
-#define UART_GPIO_MODE_SEL_XCVR_EN_ACT                     (0x3 << UART_GPIO_MODE_SEL_S)
-#define UART_GPIO_MODE_SEL_XCVR_EN_FLOW                    (0x4 << UART_GPIO_MODE_SEL_S)
-
-#define UART_GPIO_MODE_XCVR_EN_POL_M                       0x1
-#define UART_GPIO_MODE_XCVR_EN_POL_S                       3
-#define UART_GPIO_MODE_XCVR_EN_POL                         0x008
-
-#define UART_ENABLE                                        0x003
-#define UART_ENABLE_TX_M                                   0x1
-#define UART_ENABLE_TX_S                                   0
-#define UART_ENABLE_TX                                     0x001
-#define UART_ENABLE_RX_M                                   0x1
-#define UART_ENABLE_RX_S                                   1
-#define UART_ENABLE_RX                                     0x002
-
-#define UART_CLOCK_DIVISOR_0                               0x004
-#define UART_CLOCK_DIVISOR_1                               0x005
-#define UART_CLOCK_DIVISOR_2                               0x006
-
-#define UART_CLOCK_DIVISOR_2_MSB_M                         0x7
-#define UART_CLOCK_DIVISOR_2_MSB_S                         0
-#define UART_CLOCK_DIVISOR_2_MSB                           0x007
-#define UART_CLOCK_DIVISOR_2_DIAGMODE_M                    0x1
-#define UART_CLOCK_DIVISOR_2_DIAGMODE_S                    3
-#define UART_CLOCK_DIVISOR_2_DIAGMODE                      0x008
-
-#define UART_TX_CLOCK_MASK_0                               0x007
-#define UART_TX_CLOCK_MASK_1                               0x008
-
-#define UART_RX_CLOCK_MASK_0                               0x009
-#define UART_RX_CLOCK_MASK_1                               0x00a
-
-#define UART_FORMAT                                        0x00b
-
-#define UART_FORMAT_SIZE_M                                 0xf
-#define UART_FORMAT_SIZE_S                                 0
-#define UART_FORMAT_SIZE                                   0x00f
-
-#define UART_FORMAT_SIZE_7                                 (0x7 << UART_FORMAT_SIZE_S)
-#define UART_FORMAT_SIZE_8                                 (0x8 << UART_FORMAT_SIZE_S)
-#define UART_FORMAT_SIZE_9                                 (0x9 << UART_FORMAT_SIZE_S)
-
-#define UART_FORMAT_PARITY_M                               0x7
-#define UART_FORMAT_PARITY_S                               4
-#define UART_FORMAT_PARITY                                 0x070
-
-#define UART_FORMAT_PARITY_NONE                            (0x0 << UART_FORMAT_PARITY_S)
-#define UART_FORMAT_PARITY_ODD                             (0x1 << UART_FORMAT_PARITY_S)
-#define UART_FORMAT_PARITY_EVEN                            (0x2 << UART_FORMAT_PARITY_S)
-#define UART_FORMAT_PARITY_1                               (0x3 << UART_FORMAT_PARITY_S)
-#define UART_FORMAT_PARITY_0                               (0x4 << UART_FORMAT_PARITY_S)
-
-#define UART_FORMAT_STOP_M                                 0x1
-#define UART_FORMAT_STOP_S                                 7
-#define UART_FORMAT_STOP                                   0x080
-
-#define UART_FORMAT_STOP_1                                 (0x0 << UART_FORMAT_STOP_S)
-#define UART_FORMAT_STOP_2                                 (0x1 << UART_FORMAT_STOP_S)
-
-#define UART_FORMAT_MODE_7N1                               0
-#define UART_FORMAT_MODE_RES1                              1
-#define UART_FORMAT_MODE_RES2                              2
-#define UART_FORMAT_MODE_RES3                              3
-#define UART_FORMAT_MODE_7N2                               4
-#define UART_FORMAT_MODE_7P1                               5
-#define UART_FORMAT_MODE_8N1                               6
-#define UART_FORMAT_MODE_RES7                              7
-#define UART_FORMAT_MODE_7P2                               8
-#define UART_FORMAT_MODE_8N2                               9
-#define UART_FORMAT_MODE_8P1                               10
-#define UART_FORMAT_MODE_9N1                               11
-#define UART_FORMAT_MODE_8P2                               12
-#define UART_FORMAT_MODE_RESD                              13
-#define UART_FORMAT_MODE_RESE                              14
-#define UART_FORMAT_MODE_9N2                               15
-
-#define UART_FLOW                                          0x00c
-
-#define UART_FLOW_MODE_M                                   0x7
-#define UART_FLOW_MODE_S                                   0
-#define UART_FLOW_MODE                                     0x007
-
-#define UART_FLOW_MODE_NONE                                (0x0 << UART_FLOW_MODE_S)
-#define UART_FLOW_MODE_HW                                  (0x1 << UART_FLOW_MODE_S)
-#define UART_FLOW_MODE_SW                                  (0x2 << UART_FLOW_MODE_S)
-#define UART_FLOW_MODE_ADDR_MATCH                          (0x3 << UART_FLOW_MODE_S)
-#define UART_FLOW_MODE_ADDR_MATCH_TX                       (0x4 << UART_FLOW_MODE_S)
-
-#define UART_FLOW_HALF_DUPLEX_M                            0x1
-#define UART_FLOW_HALF_DUPLEX_S                            3
-#define UART_FLOW_HALF_DUPLEX                              0x008
-
-#define UART_LOOPBACK_CTL                                  0x012
-#define UART_LOOPBACK_CTL_ENABLE_M                         0x1
-#define UART_LOOPBACK_CTL_ENABLE_S                         2
-#define UART_LOOPBACK_CTL_ENABLE                           0x004
-#define UART_LOOPBACK_CTL_RX_SOURCE_M                      0x3
-#define UART_LOOPBACK_CTL_RX_SOURCE_S                      0
-#define UART_LOOPBACK_CTL_RX_SOURCE                        0x003
-#define UART_LOOPBACK_CTL_RX_UART0                         (0x0 << UART_LOOPBACK_CTL_RX_SOURCE_S)
-#define UART_LOOPBACK_CTL_RX_UART1                         (0x1 << UART_LOOPBACK_CTL_RX_SOURCE_S)
-#define UART_LOOPBACK_CTL_RX_UART2                         (0x2 << UART_LOOPBACK_CTL_RX_SOURCE_S)
-#define UART_LOOPBACK_CTL_RX_UART3                         (0x3 << UART_LOOPBACK_CTL_RX_SOURCE_S)
-
-#define UART_CHANNEL_NUM                                   0x00d
-
-#define UART_XON_CHAR                                      0x010
-#define UART_XOFF_CHAR                                     0x011
-
-#define UART_GPIO_SET                                      0x01d
-#define UART_GPIO_CLR                                      0x01e
-#define UART_GPIO_STATUS                                   0x01f
-
-#define URM_ENABLE_BASE                                    0x010
-#define URM_ENABLE_0                                       0x010
-#define URM_ENABLE_0_TX_M                                  0x1
-#define URM_ENABLE_0_TX_S                                  0
-#define URM_ENABLE_0_TX                                    0x001
-#define URM_ENABLE_0_RX_M                                  0x1
-#define URM_ENABLE_0_RX_S                                  1
-#define URM_ENABLE_0_RX                                    0x002
-
-#define URM_RX_FIFO_RESET_0                                0x018
-#define URM_RX_FIFO_RESET_1                                0x019
-#define URM_RX_FIFO_RESET_2                                0x01a
-#define URM_RX_FIFO_RESET_3                                0x01b
-#define URM_TX_FIFO_RESET_0                                0x01c
-#define URM_TX_FIFO_RESET_1                                0x01d
-#define URM_TX_FIFO_RESET_2                                0x01e
-#define URM_TX_FIFO_RESET_3                                0x01f
-
-
-#define RAMCTL_REGS_TXFIFO_0_LEVEL                         0x000
-#define RAMCTL_REGS_TXFIFO_1_LEVEL                         0x001
-#define RAMCTL_REGS_TXFIFO_2_LEVEL                         0x002
-#define RAMCTL_REGS_TXFIFO_3_LEVEL                         0x003
-#define RAMCTL_REGS_RXFIFO_0_LEVEL                         0x004
-
-#define RAMCTL_REGS_RXFIFO_0_LEVEL_LEVEL_M                 0x7ff
-#define RAMCTL_REGS_RXFIFO_0_LEVEL_LEVEL_S                 0
-#define RAMCTL_REGS_RXFIFO_0_LEVEL_LEVEL                   0x7ff
-#define RAMCTL_REGS_RXFIFO_0_LEVEL_STALE_M                 0x1
-#define RAMCTL_REGS_RXFIFO_0_LEVEL_STALE_S                 11
-#define RAMCTL_REGS_RXFIFO_0_LEVEL_STALE                   0x800
-
-#define RAMCTL_REGS_RXFIFO_1_LEVEL                         0x005
-#define RAMCTL_REGS_RXFIFO_2_LEVEL                         0x006
-#define RAMCTL_REGS_RXFIFO_3_LEVEL                         0x007
-
-#define RAMCTL_BUFFER_PARITY                               0x1
-#define RAMCTL_BUFFER_BREAK                                0x2
-#define RAMCTL_BUFFER_FRAME                                0x4
-#define RAMCTL_BUFFER_OVERRUN                              0x8
-
-#define N_IN_URB	4
-#define N_OUT_URB	4
-#define IN_BUFLEN	4096
-
-static struct usb_device_id id_table[] = {
-	{ USB_DEVICE(0x04e2, 0x1410) },
-	{ USB_DEVICE(0x04e2, 0x1412) },
-	{ USB_DEVICE(0x04e2, 0x1414) },
-	{ }
-};
-MODULE_DEVICE_TABLE(usb, id_table);
-
-struct vizzini_serial_private {
-	struct usb_interface *data_interface;
-};
-
-struct vizzini_port_private {
-	spinlock_t lock;
-	int outstanding_urbs;
-
-	struct urb *in_urbs[N_IN_URB];
-	char *in_buffer[N_IN_URB];
-
-	int ctrlin;
-	int ctrlout;
-	int clocal;
-
-	int block;
-	int preciseflags;	/* USB: wide mode, TTY: flags per character */
-	int trans9;		/* USB: wide mode, serial 9N1 */
-	unsigned int baud_base;	/* setserial: used to hack in non-standard baud rates */
-	int have_extra_byte;
-	int extra_byte;
-
-	int bcd_device;
-
-#ifdef VIZZINI_IWA
-	int iwa;
-#endif
-};
-
-
-static int vizzini_rev_a(struct usb_serial_port *port)
-{
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-	return portdata->bcd_device == 0;
-}
-
-static int acm_ctrl_msg(struct usb_serial_port *port, int request,
-			int value, void *buf, int len)
-{
-	struct usb_serial *serial = port->serial;
-	int retval = usb_control_msg(serial->dev,
-				     usb_sndctrlpipe(serial->dev, 0),
-				     request,
-				     USB_RT_ACM,
-				     value,
-				     serial->interface->cur_altsetting->desc.bInterfaceNumber,
-				     buf,
-				     len,
-				     5000);
-	dev_dbg(&port->dev, "acm_control_msg: rq: 0x%02x val: %#x len: %#x result: %d\n", request, value, len, retval);
-	return retval < 0 ? retval : 0;
-}
-
-#define acm_set_control(port, control)					\
-	acm_ctrl_msg(port, USB_CDC_REQ_SET_CONTROL_LINE_STATE, control, NULL, 0)
-#define acm_set_line(port, line)					\
-	acm_ctrl_msg(port, USB_CDC_REQ_SET_LINE_CODING, 0, line, sizeof *(line))
-#define acm_send_break(port, ms)					\
-	acm_ctrl_msg(port, USB_CDC_REQ_SEND_BREAK, ms, NULL, 0)
-
-static int vizzini_set_reg(struct usb_serial_port *port, int block, int regnum, int value)
-{
-	struct usb_serial *serial = port->serial;
-	int result;
-
-	result = usb_control_msg(serial->dev,                     /* usb device */
-				 usb_sndctrlpipe(serial->dev, 0), /* endpoint pipe */
-				 XR_SET_REG,                      /* request */
-				 USB_DIR_OUT | USB_TYPE_VENDOR,   /* request_type */
-				 value,                           /* request value */
-				 regnum | (block << 8),           /* index */
-				 NULL,                            /* data */
-				 0,                               /* size */
-				 5000);                           /* timeout */
-
-	return result;
-}
-
-static void vizzini_disable(struct usb_serial_port *port)
-{
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-	int block = portdata->block;
-
-	vizzini_set_reg(port, block, UART_ENABLE, 0);
-	vizzini_set_reg(port, URM_REG_BLOCK, URM_ENABLE_BASE + block, 0);
-}
-
-static void vizzini_enable(struct usb_serial_port *port)
-{
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-	int block = portdata->block;
-
-	vizzini_set_reg(port, URM_REG_BLOCK, URM_ENABLE_BASE + block, URM_ENABLE_0_TX);
-	vizzini_set_reg(port, block, UART_ENABLE, UART_ENABLE_TX | UART_ENABLE_RX);
-	vizzini_set_reg(port, URM_REG_BLOCK, URM_ENABLE_BASE + block, URM_ENABLE_0_TX | URM_ENABLE_0_RX);
-}
-
-struct vizzini_baud_rate {
-	unsigned int tx;
-	unsigned int rx0;
-	unsigned int rx1;
-};
-
-static struct vizzini_baud_rate vizzini_baud_rates[] = {
-	{ 0x000, 0x000, 0x000 },
-	{ 0x000, 0x000, 0x000 },
-	{ 0x100, 0x000, 0x100 },
-	{ 0x020, 0x400, 0x020 },
-	{ 0x010, 0x100, 0x010 },
-	{ 0x208, 0x040, 0x208 },
-	{ 0x104, 0x820, 0x108 },
-	{ 0x844, 0x210, 0x884 },
-	{ 0x444, 0x110, 0x444 },
-	{ 0x122, 0x888, 0x224 },
-	{ 0x912, 0x448, 0x924 },
-	{ 0x492, 0x248, 0x492 },
-	{ 0x252, 0x928, 0x292 },
-	{ 0X94A, 0X4A4, 0XA52 },
-	{ 0X52A, 0XAA4, 0X54A },
-	{ 0XAAA, 0x954, 0X4AA },
-	{ 0XAAA, 0x554, 0XAAA },
-	{ 0x555, 0XAD4, 0X5AA },
-	{ 0XB55, 0XAB4, 0X55A },
-	{ 0X6B5, 0X5AC, 0XB56 },
-	{ 0X5B5, 0XD6C, 0X6D6 },
-	{ 0XB6D, 0XB6A, 0XDB6 },
-	{ 0X76D, 0X6DA, 0XBB6 },
-	{ 0XEDD, 0XDDA, 0X76E },
-	{ 0XDDD, 0XBBA, 0XEEE },
-	{ 0X7BB, 0XF7A, 0XDDE },
-	{ 0XF7B, 0XEF6, 0X7DE },
-	{ 0XDF7, 0XBF6, 0XF7E },
-	{ 0X7F7, 0XFEE, 0XEFE },
-	{ 0XFDF, 0XFBE, 0X7FE },
-	{ 0XF7F, 0XEFE, 0XFFE },
-	{ 0XFFF, 0XFFE, 0XFFD },
-};
-
-static int vizzini_set_baud_rate(struct usb_serial_port *port, unsigned int rate)
-{
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-	int block = portdata->block;
-	unsigned int divisor = 48000000 / rate;
-	unsigned int i = ((32 * 48000000) / rate) & 0x1f;
-	unsigned int tx_mask = vizzini_baud_rates[i].tx;
-	unsigned int rx_mask = (divisor & 1) ? vizzini_baud_rates[i].rx1 : vizzini_baud_rates[i].rx0;
-
-	dev_dbg(&port->dev, "Setting baud rate to %d: i=%u div=%u tx=%03x rx=%03x\n", rate, i, divisor, tx_mask, rx_mask);
-
-	vizzini_set_reg(port, block, UART_CLOCK_DIVISOR_0, (divisor >>  0) & 0xff);
-	vizzini_set_reg(port, block, UART_CLOCK_DIVISOR_1, (divisor >>  8) & 0xff);
-	vizzini_set_reg(port, block, UART_CLOCK_DIVISOR_2, (divisor >> 16) & 0xff);
-	vizzini_set_reg(port, block, UART_TX_CLOCK_MASK_0, (tx_mask >>  0) & 0xff);
-	vizzini_set_reg(port, block, UART_TX_CLOCK_MASK_1, (tx_mask >>  8) & 0xff);
-	vizzini_set_reg(port, block, UART_RX_CLOCK_MASK_0, (rx_mask >>  0) & 0xff);
-	vizzini_set_reg(port, block, UART_RX_CLOCK_MASK_1, (rx_mask >>  8) & 0xff);
-
-	return -EINVAL;
-}
-
-static void vizzini_set_termios(struct tty_struct *tty_param,
-				struct usb_serial_port *port,
-				struct ktermios *old_termios)
-{
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-	unsigned int             cflag, block;
-	speed_t                  rate;
-	unsigned int             format_size, format_parity, format_stop, flow, gpio_mode;
-	struct tty_struct       *tty = port->port.tty;
-
-	cflag = tty->termios->c_cflag;
-
-	portdata->clocal = ((cflag & CLOCAL) != 0);
-
-	block = portdata->block;
-
-	vizzini_disable(port);
-
-	if ((cflag & CSIZE) == CS7) {
-		format_size = UART_FORMAT_SIZE_7;
-	} else if ((cflag & CSIZE) == CS5) {
-		/* Enabling 5-bit mode is really 9-bit mode! */
-		format_size = UART_FORMAT_SIZE_9;
-	} else {
-		format_size = UART_FORMAT_SIZE_8;
-	}
-	portdata->trans9 = (format_size == UART_FORMAT_SIZE_9);
-
-	if (cflag & PARENB) {
-		if (cflag & PARODD) {
-			if (cflag & CMSPAR)
-				format_parity = UART_FORMAT_PARITY_1;
-			else
-				format_parity = UART_FORMAT_PARITY_ODD;
-		} else {
-			if (cflag & CMSPAR)
-				format_parity = UART_FORMAT_PARITY_0;
-			else
-				format_parity = UART_FORMAT_PARITY_EVEN;
-		}
-	} else {
-		format_parity = UART_FORMAT_PARITY_NONE;
-	}
-
-	if (cflag & CSTOPB)
-		format_stop = UART_FORMAT_STOP_2;
-	else
-		format_stop = UART_FORMAT_STOP_1;
-
-#ifdef VIZZINI_IWA
-	if (format_size == UART_FORMAT_SIZE_8) {
-		portdata->iwa = format_parity;
-		if (portdata->iwa != UART_FORMAT_PARITY_NONE) {
-			format_size = UART_FORMAT_SIZE_9;
-			format_parity = UART_FORMAT_PARITY_NONE;
-		}
-	} else {
-		portdata->iwa = UART_FORMAT_PARITY_NONE;
-	}
-#endif
-	vizzini_set_reg(port, block, UART_FORMAT, format_size | format_parity | format_stop);
-
-	if (cflag & CRTSCTS) {
-		flow      = UART_FLOW_MODE_HW;
-		gpio_mode = UART_GPIO_MODE_SEL_RTS_CTS;
-	} else if (I_IXOFF(tty) || I_IXON(tty)) {
-		unsigned char   start_char = START_CHAR(tty);
-		unsigned char   stop_char  = STOP_CHAR(tty);
-
-		flow      = UART_FLOW_MODE_SW;
-		gpio_mode = UART_GPIO_MODE_SEL_GPIO;
-
-		vizzini_set_reg(port, block, UART_XON_CHAR, start_char);
-		vizzini_set_reg(port, block, UART_XOFF_CHAR, stop_char);
-	} else {
-		flow      = UART_FLOW_MODE_NONE;
-		gpio_mode = UART_GPIO_MODE_SEL_GPIO;
-	}
-
-	vizzini_set_reg(port, block, UART_FLOW, flow);
-	vizzini_set_reg(port, block, UART_GPIO_MODE, gpio_mode);
-
-	if (portdata->trans9) {
-		/* Turn on wide mode if we're 9-bit transparent. */
-		vizzini_set_reg(port, EPLOCALS_REG_BLOCK, (block * MEM_EP_LOCALS_SIZE) + EP_WIDE_MODE, 1);
-#ifdef VIZZINI_IWA
-	} else if (portdata->iwa != UART_FORMAT_PARITY_NONE) {
-		vizzini_set_reg(port, EPLOCALS_REG_BLOCK, (block * MEM_EP_LOCALS_SIZE) + EP_WIDE_MODE, 1);
-#endif
-	} else if (!portdata->preciseflags) {
-		/* Turn off wide mode unless we have precise flags. */
-		vizzini_set_reg(port, EPLOCALS_REG_BLOCK, (block * MEM_EP_LOCALS_SIZE) + EP_WIDE_MODE, 0);
-	}
-
-	rate = tty_get_baud_rate(tty);
-	if (rate)
-		vizzini_set_baud_rate(port, rate);
-
-	vizzini_enable(port);
-}
-
-static void vizzini_break_ctl(struct tty_struct *tty, int break_state)
-{
-	struct usb_serial_port *port = tty->driver_data;
-
-	dev_dbg(&port->dev, "BREAK %d\n", break_state);
-	if (break_state)
-		acm_send_break(port, 0x10);
-	else
-		acm_send_break(port, 0x000);
-}
-
-static int vizzini_tiocmget(struct tty_struct *tty)
-{
-	struct usb_serial_port *port = tty->driver_data;
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-
-	return (portdata->ctrlout & ACM_CTRL_DTR ? TIOCM_DTR : 0) |
-		(portdata->ctrlout & ACM_CTRL_RTS ? TIOCM_RTS : 0) |
-		(portdata->ctrlin  & ACM_CTRL_DSR ? TIOCM_DSR : 0) |
-		(portdata->ctrlin  & ACM_CTRL_RI  ? TIOCM_RI  : 0) |
-		(portdata->ctrlin  & ACM_CTRL_DCD ? TIOCM_CD  : 0) |
-		TIOCM_CTS;
-}
-
-static int vizzini_tiocmset(struct tty_struct *tty,
-			    unsigned int set, unsigned int clear)
-{
-	struct usb_serial_port *port = tty->driver_data;
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-	unsigned int newctrl;
-
-	newctrl = portdata->ctrlout;
-	set = (set & TIOCM_DTR ? ACM_CTRL_DTR : 0) | (set & TIOCM_RTS ? ACM_CTRL_RTS : 0);
-	clear = (clear & TIOCM_DTR ? ACM_CTRL_DTR : 0) | (clear & TIOCM_RTS ? ACM_CTRL_RTS : 0);
-
-	newctrl = (newctrl & ~clear) | set;
-
-	if (portdata->ctrlout == newctrl)
-		return 0;
-	return acm_set_control(port, portdata->ctrlout = newctrl);
-}
-
-static int vizzini_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg)
-{
-	struct usb_serial_port *port = tty->driver_data;
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-	struct serial_struct ss;
-
-	dev_dbg(&port->dev, "%s %08x\n", __func__, cmd);
-
-	switch (cmd) {
-	case TIOCGSERIAL:
-		if (!arg)
-			return -EFAULT;
-		memset(&ss, 0, sizeof(ss));
-		ss.baud_base = portdata->baud_base;
-		if (copy_to_user((void __user *)arg, &ss, sizeof(ss)))
-			return -EFAULT;
-		break;
-
-	case TIOCSSERIAL:
-		if (!arg)
-			return -EFAULT;
-		if (copy_from_user(&ss, (void __user *)arg, sizeof(ss)))
-			return -EFAULT;
-		portdata->baud_base = ss.baud_base;
-		dev_dbg(&port->dev, "baud_base=%d\n", portdata->baud_base);
-
-		vizzini_disable(port);
-		if (portdata->baud_base)
-			vizzini_set_baud_rate(port, portdata->baud_base);
-		vizzini_enable(port);
-		break;
-
-	default:
-		return -ENOIOCTLCMD;
-	}
-
-	return 0;
-}
-
-#ifdef VIZZINI_IWA
-static const int vizzini_parity[] = {
-	0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
-	1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
-	1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
-	0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
-	1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
-	0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
-	0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
-	1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
-	1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
-	0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
-	0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
-	1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
-	0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0,
-	1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
-	1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1,
-	0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0
-};
-#endif
-
-static void vizzini_out_callback(struct urb *urb)
-{
-	struct usb_serial_port *port = urb->context;
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-	int status = urb->status;
-	unsigned long flags;
-
-	dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
-
-	/* free up the transfer buffer, as usb_free_urb() does not do this */
-	kfree(urb->transfer_buffer);
-
-	if (status)
-		dev_dbg(&port->dev, "%s - nonzero write bulk status received: %d\n", __func__, status);
-
-	spin_lock_irqsave(&portdata->lock, flags);
-	--portdata->outstanding_urbs;
-	spin_unlock_irqrestore(&portdata->lock, flags);
-
-	usb_serial_port_softint(port);
-}
-
-static int vizzini_write_room(struct tty_struct *tty)
-{
-	struct usb_serial_port *port = tty->driver_data;
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-	unsigned long flags;
-
-	dev_dbg(&port->dev, "%s - port %d\n", __func__, port->number);
-
-	/* try to give a good number back based on if we have any free urbs at
-	 * this point in time */
-	spin_lock_irqsave(&portdata->lock, flags);
-	if (portdata->outstanding_urbs > N_OUT_URB * 2 / 3) {
-		spin_unlock_irqrestore(&portdata->lock, flags);
-		dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
-		return 0;
-	}
-	spin_unlock_irqrestore(&portdata->lock, flags);
-
-	return 2048;
-}
-
-static int vizzini_write(struct tty_struct *tty, struct usb_serial_port *port,
-			 const unsigned char *buf, int count)
-{
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-	struct usb_serial *serial = port->serial;
-	int bufsize = count;
-	unsigned long flags;
-	unsigned char *buffer;
-	struct urb *urb;
-	int status;
-
-	portdata = usb_get_serial_port_data(port);
-
-	dev_dbg(&port->dev, "%s: write (%d chars)\n", __func__, count);
-
-	spin_lock_irqsave(&portdata->lock, flags);
-	if (portdata->outstanding_urbs > N_OUT_URB) {
-		spin_unlock_irqrestore(&portdata->lock, flags);
-		dev_dbg(&port->dev, "%s - write limit hit\n", __func__);
-		return 0;
-	}
-	portdata->outstanding_urbs++;
-	spin_unlock_irqrestore(&portdata->lock, flags);
-
-#ifdef VIZZINI_IWA
-	if (portdata->iwa != UART_FORMAT_PARITY_NONE)
-		bufsize = count * 2;
-#endif
-	buffer = kmalloc(bufsize, GFP_ATOMIC);
-
-	if (!buffer) {
-		dev_err(&port->dev, "out of memory\n");
-		count = -ENOMEM;
-		goto error_no_buffer;
-	}
-
-	urb = usb_alloc_urb(0, GFP_ATOMIC);
-	if (!urb) {
-		dev_err(&port->dev, "no more free urbs\n");
-		count = -ENOMEM;
-		goto error_no_urb;
-	}
-
-#ifdef VIZZINI_IWA
-	if (portdata->iwa != UART_FORMAT_PARITY_NONE) {
-		int i;
-		char *b = buffer;
-		for (i = 0; i < count; ++i) {
-			int c, p = 0;
-			c = buf[i];
-			switch (portdata->iwa) {
-			case UART_FORMAT_PARITY_ODD:
-				p = !vizzini_parity[c];
-				break;
-			case UART_FORMAT_PARITY_EVEN:
-				p = vizzini_parity[c];
-				break;
-			case UART_FORMAT_PARITY_1:
-				p = 1;
-				break;
-			case UART_FORMAT_PARITY_0:
-				p = 0;
-				break;
-			}
-			*b++ = c;
-			*b++ = p;
-		}
-	} else
-#endif
-		memcpy(buffer, buf, count);
-
-	usb_fill_bulk_urb(urb, serial->dev,
-			  usb_sndbulkpipe(serial->dev,
-					  port->bulk_out_endpointAddress),
-			  buffer, bufsize, vizzini_out_callback, port);
-
-	/* send it down the pipe */
-	status = usb_submit_urb(urb, GFP_ATOMIC);
-	if (status) {
-		dev_err(&port->dev, "%s - usb_submit_urb(write bulk) failed with status = %d\n", __func__, status);
-		count = status;
-		goto error;
-	}
-
-	/* we are done with this urb, so let the host driver
-	 * really free it when it is finished with it */
-	usb_free_urb(urb);
-
-	return count;
-error:
-	usb_free_urb(urb);
-error_no_urb:
-	kfree(buffer);
-error_no_buffer:
-	spin_lock_irqsave(&portdata->lock, flags);
-	--portdata->outstanding_urbs;
-	spin_unlock_irqrestore(&portdata->lock, flags);
-	return count;
-}
-
-static void vizzini_in_callback(struct urb *urb)
-{
-	int endpoint = usb_pipeendpoint(urb->pipe);
-	struct usb_serial_port *port = urb->context;
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-	struct tty_struct *tty = port->port.tty;
-	int preciseflags = portdata->preciseflags;
-	char *transfer_buffer = urb->transfer_buffer;
-	int length, room, have_extra_byte;
-	int err;
-
-	if (urb->status) {
-		dev_dbg(&port->dev, "%s: nonzero status: %d on endpoint %02x.\n", __func__, urb->status, endpoint);
-		return;
-	}
-
-#ifdef VIZZINI_IWA
-	if (portdata->iwa != UART_FORMAT_PARITY_NONE)
-		preciseflags = true;
-#endif
-
-	length = urb->actual_length;
-	if (length == 0) {
-		dev_dbg(&port->dev, "%s: empty read urb received\n", __func__);
-		err = usb_submit_urb(urb, GFP_ATOMIC);
-		if (err)
-			dev_err(&port->dev, "resubmit read urb failed. (%d)\n", err);
-		return;
-	}
-
-	length = length + (portdata->have_extra_byte ? 1 : 0);
-	have_extra_byte = (preciseflags && (length & 1));
-	length = (preciseflags) ? (length / 2) : length;
-
-	room = tty_buffer_request_room(tty, length);
-	if (room != length)
-		dev_dbg(&port->dev, "Not enough room in TTY buf, dropped %d chars.\n", length - room);
-
-	if (room) {
-		if (preciseflags) {
-			char *dp = transfer_buffer;
-			int i, ch, ch_flags;
-
-			for (i = 0; i < room; ++i) {
-				char tty_flag;
-
-				if (i == 0) {
-					if (portdata->have_extra_byte)
-						ch = portdata->extra_byte;
-					else
-						ch = *dp++;
-				} else {
-					ch = *dp++;
-				}
-				ch_flags = *dp++;
-
-#ifdef VIZZINI_IWA
-				{
-					int p;
-					switch (portdata->iwa) {
-					case UART_FORMAT_PARITY_ODD:
-						p = !vizzini_parity[ch];
-						break;
-					case UART_FORMAT_PARITY_EVEN:
-						p = vizzini_parity[ch];
-						break;
-					case UART_FORMAT_PARITY_1:
-						p = 1;
-						break;
-					case UART_FORMAT_PARITY_0:
-						p = 0;
-						break;
-					default:
-						p = 0;
-						break;
-					}
-					ch_flags ^= p;
-				}
-#endif
-				if (ch_flags & RAMCTL_BUFFER_PARITY)
-					tty_flag = TTY_PARITY;
-				else if (ch_flags & RAMCTL_BUFFER_BREAK)
-					tty_flag = TTY_BREAK;
-				else if (ch_flags & RAMCTL_BUFFER_FRAME)
-					tty_flag = TTY_FRAME;
-				else if (ch_flags & RAMCTL_BUFFER_OVERRUN)
-					tty_flag = TTY_OVERRUN;
-				else
-					tty_flag = TTY_NORMAL;
-
-				tty_insert_flip_char(tty, ch, tty_flag);
-			}
-		} else {
-			tty_insert_flip_string(tty, transfer_buffer, room);
-		}
-
-		tty_flip_buffer_push(tty);
-	}
-
-	portdata->have_extra_byte = have_extra_byte;
-	if (have_extra_byte)
-		portdata->extra_byte = transfer_buffer[urb->actual_length - 1];
-
-	err = usb_submit_urb(urb, GFP_ATOMIC);
-	if (err)
-		dev_err(&port->dev, "resubmit read urb failed. (%d)\n", err);
-}
-
-static void vizzini_int_callback(struct urb *urb)
-{
-	struct usb_serial_port *port = urb->context;
-	struct vizzini_port_private *portdata = usb_get_serial_port_data(port);
-	struct tty_struct *tty = port->port.tty;
-
-	struct usb_cdc_notification *dr = urb->transfer_buffer;
-	unsigned char *data;
-	int newctrl;
-	int status;
-
-	switch (urb->status) {
-	case 0:
-		/* success */
-		break;
-	case -ECONNRESET:
-	case -ENOENT:
-	case -ESHUTDOWN:
-		/* this urb is terminated, clean up */
-		dev_dbg(&port->dev, "urb shutting down with status: %d\n", urb->status);
-		return;
-	default:
-		dev_dbg(&port->dev, "nonzero urb status received: %d\n", urb->status);
-		goto exit;
-	}
-
-	data = (unsigned char *)(dr + 1);
-	switch (dr->bNotificationType) {
-
-	case USB_CDC_NOTIFY_NETWORK_CONNECTION:
-		dev_dbg(&port->dev, "%s network\n", dr->wValue ? "connected to" : "disconnected from");
-		break;
-
-	case USB_CDC_NOTIFY_SERIAL_STATE:
-		newctrl = le16_to_cpu(get_unaligned((__le16 *)data));
-
-		if (!portdata->clocal && (portdata->ctrlin & ~newctrl & ACM_CTRL_DCD)) {
-			dev_dbg(&port->dev, "calling hangup\n");
-			tty_hangup(tty);
-		}
-
-		portdata->ctrlin = newctrl;
-
-		dev_dbg(&port->dev, "input control lines: dcd%c dsr%c break%c ring%c framing%c parity%c overrun%c\n",
-				   portdata->ctrlin & ACM_CTRL_DCD ? '+' : '-',
-				   portdata->ctrlin & ACM_CTRL_DSR ? '+' : '-',
-				   portdata->ctrlin & ACM_CTRL_BRK ? '+' : '-',
-				   portdata->ctrlin & ACM_CTRL_RI  ? '+' : '-',
-				   portdata->ctrlin & ACM_CTRL_FRAMING ? '+' : '-',
-				   portdata->ctrlin & ACM_CTRL_PARITY ? '+' : '-',
-				   portdata->ctrlin & ACM_CTRL_OVERRUN ? '+' : '-');
-		break;
-
-	default:
-		dev_dbg(&port->dev, "unknown notification %d received: index %d len %d data0 %d data1 %d\n",
-				   dr->bNotificationType, dr->wIndex,
-				   dr->wLength, data[0], data[1]);
-		break;
-	}
-exit:
-	dev_dbg(&port->dev, "Resubmitting interrupt IN urb %p\n", urb);
-	status = usb_submit_urb(urb, GFP_ATOMIC);
-	if (status)
-		dev_err(&port->dev, "usb_submit_urb failed with result %d", status);
-}
-
-static int vizzini_open(struct tty_struct *tty_param, struct usb_serial_port *port)
-{
-	struct vizzini_port_private *portdata;
-	struct usb_serial *serial = port->serial;
-	struct tty_struct *tty = port->port.tty;
-	int i;
-	struct urb *urb;
-	int result;
-
-	portdata = usb_get_serial_port_data(port);
-
-	acm_set_control(port, portdata->ctrlout = ACM_CTRL_DTR | ACM_CTRL_RTS);
-
-	/* Reset low level data toggle and start reading from endpoints */
-	for (i = 0; i < N_IN_URB; i++) {
-		dev_dbg(&port->dev, "%s urb %d\n", __func__, i);
-
-		urb = portdata->in_urbs[i];
-		if (!urb)
-			continue;
-		if (urb->dev != serial->dev) {
-			dev_dbg(&port->dev, "%s: dev %p != %p\n", __func__,
-					   urb->dev, serial->dev);
-			continue;
-		}
-
-		/*
-		 * make sure endpoint data toggle is synchronized with the
-		 * device
-		 */
-		/* dev_dbg(&port->dev, "%s clearing halt on %x\n", __func__, urb->pipe); */
-		/* usb_clear_halt(urb->dev, urb->pipe); */
-
-		dev_dbg(&port->dev, "%s submitting urb %p\n", __func__, urb);
-		result = usb_submit_urb(urb, GFP_KERNEL);
-		if (result) {
-			dev_err(&port->dev, "submit urb %d failed (%d) %d\n",
-				i, result, urb->transfer_buffer_length);
-		}
-	}
-
-	tty->low_latency = 1;
-
-	/* start up the interrupt endpoint if we have one */
-	if (port->interrupt_in_urb) {
-		result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
-		if (result)
-			dev_err(&port->dev, "submit irq_in urb failed %d\n",
-				result);
-	}
-	return 0;
-}
-
-static void vizzini_close(struct usb_serial_port *port)
-{
-	int                              i;
-	struct usb_serial               *serial = port->serial;
-	struct vizzini_port_private     *portdata;
-	struct tty_struct               *tty    = port->port.tty;
-
-	portdata = usb_get_serial_port_data(port);
-
-	acm_set_control(port, portdata->ctrlout = 0);
-
-	if (serial->dev) {
-		/* Stop reading/writing urbs */
-		for (i = 0; i < N_IN_URB; i++)
-			usb_kill_urb(portdata->in_urbs[i]);
-	}
-
-	usb_kill_urb(port->interrupt_in_urb);
-
-	tty = NULL; /* FIXME */
-}
-
-static int vizzini_attach(struct usb_serial *serial)
-{
-	struct vizzini_serial_private   *serial_priv       = usb_get_serial_data(serial);
-	struct usb_interface            *interface         = serial_priv->data_interface;
-	struct usb_host_interface       *iface_desc;
-	struct usb_endpoint_descriptor  *endpoint;
-	struct usb_endpoint_descriptor  *bulk_in_endpoint  = NULL;
-	struct usb_endpoint_descriptor  *bulk_out_endpoint = NULL;
-
-	struct usb_serial_port          *port;
-	struct vizzini_port_private     *portdata;
-	struct urb                      *urb;
-	int                              i, j;
-
-	/* Assume that there's exactly one serial port. */
-	port = serial->port[0];
-
-	/* The usb_serial is now fully set up, but we want to make a
-	 * couple of modifications.  Namely, it was configured based
-	 * upon the control interface and not the data interface, so
-	 * it has no notion of the bulk in and out endpoints.  So we
-	 * essentially do some of the same allocations and
-	 * configurations that the usb-serial core would have done if
-	 * it had not made any faulty assumptions about the
-	 * endpoints. */
-
-	iface_desc = interface->cur_altsetting;
-	for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
-		endpoint = &iface_desc->endpoint[i].desc;
-
-		if (usb_endpoint_is_bulk_in(endpoint))
-			bulk_in_endpoint = endpoint;
-
-		if (usb_endpoint_is_bulk_out(endpoint))
-			bulk_out_endpoint = endpoint;
-	}
-
-	if (!bulk_out_endpoint || !bulk_in_endpoint) {
-		dev_dbg(&port->dev, "Missing endpoint!\n");
-		return -EINVAL;
-	}
-
-	port->bulk_out_endpointAddress = bulk_out_endpoint->bEndpointAddress;
-	port->bulk_in_endpointAddress = bulk_in_endpoint->bEndpointAddress;
-
-	portdata = kzalloc(sizeof(*portdata), GFP_KERNEL);
-	if (!portdata) {
-		dev_dbg(&port->dev, "%s: kmalloc for vizzini_port_private (%d) failed!.\n",
-				   __func__, i);
-		return -ENOMEM;
-	}
-	spin_lock_init(&portdata->lock);
-	for (j = 0; j < N_IN_URB; j++) {
-		portdata->in_buffer[j] = kmalloc(IN_BUFLEN, GFP_KERNEL);
-		if (!portdata->in_buffer[j]) {
-			for (--j; j >= 0; j--)
-				kfree(portdata->in_buffer[j]);
-			kfree(portdata);
-			return -ENOMEM;
-		}
-	}
-
-	/* Bulk OUT endpoints 0x1..0x4 map to register blocks 0..3 */
-	portdata->block = port->bulk_out_endpointAddress - 1;
-
-	usb_set_serial_port_data(port, portdata);
-
-	portdata->bcd_device = le16_to_cpu(serial->dev->descriptor.bcdDevice);
-	if (vizzini_rev_a(port))
-		dev_info(&port->dev, "Adapting to revA silicon\n");
-
-	/* initialize the in urbs */
-	for (j = 0; j < N_IN_URB; ++j) {
-		urb = usb_alloc_urb(0, GFP_KERNEL);
-		if (urb == NULL) {
-			dev_dbg(&port->dev, "%s: alloc for in port failed.\n", __func__);
-			continue;
-		}
-		/* Fill URB using supplied data. */
-		dev_dbg(&port->dev, "Filling URB %p, EP=%d buf=%p len=%d\n", urb, port->bulk_in_endpointAddress, portdata->in_buffer[j], IN_BUFLEN);
-		usb_fill_bulk_urb(urb, serial->dev,
-				  usb_rcvbulkpipe(serial->dev,
-						  port->bulk_in_endpointAddress),
-				  portdata->in_buffer[j], IN_BUFLEN,
-				  vizzini_in_callback, port);
-		portdata->in_urbs[j] = urb;
-	}
-
-	return 0;
-}
-
-static void vizzini_serial_disconnect(struct usb_serial *serial)
-{
-	struct usb_serial_port          *port;
-	struct vizzini_port_private     *portdata;
-	int                              i, j;
-
-	dev_dbg(&serial->dev->dev, "%s %p\n", __func__, serial);
-
-	for (i = 0; i < serial->num_ports; ++i) {
-		port = serial->port[i];
-		if (!port)
-			continue;
-		portdata = usb_get_serial_port_data(port);
-		if (!portdata)
-			continue;
-
-		for (j = 0; j < N_IN_URB; j++) {
-			usb_kill_urb(portdata->in_urbs[j]);
-			usb_free_urb(portdata->in_urbs[j]);
-		}
-	}
-}
-
-static void vizzini_serial_release(struct usb_serial *serial)
-{
-	struct usb_serial_port          *port;
-	struct vizzini_port_private     *portdata;
-	int                              i, j;
-
-	dev_dbg(&serial->dev->dev, "%s %p\n", __func__, serial);
-
-	for (i = 0; i < serial->num_ports; ++i) {
-		port = serial->port[i];
-		if (!port)
-			continue;
-		portdata = usb_get_serial_port_data(port);
-		if (!portdata)
-			continue;
-
-		for (j = 0; j < N_IN_URB; j++)
-			kfree(portdata->in_buffer[j]);
-
-		kfree(portdata);
-		usb_set_serial_port_data(port, NULL);
-	}
-}
-
-static int vizzini_calc_num_ports(struct usb_serial *serial)
-{
-	return 1;
-}
-
-static int vizzini_probe(struct usb_serial *serial,
-			 const struct usb_device_id *id)
-{
-	struct usb_interface *intf = serial->interface;
-	unsigned char *buffer = intf->altsetting->extra;
-	int buflen = intf->altsetting->extralen;
-	struct usb_device *usb_dev = interface_to_usbdev(intf);
-	struct usb_cdc_union_desc *union_header = NULL;
-	struct usb_cdc_country_functional_desc  *cfd = NULL;
-	int call_interface_num = -1;
-	int data_interface_num;
-	struct usb_interface *control_interface;
-	struct usb_interface *data_interface;
-	struct usb_endpoint_descriptor *epctrl;
-	struct usb_endpoint_descriptor *epread;
-	struct usb_endpoint_descriptor *epwrite;
-	struct vizzini_serial_private *serial_priv;
-
-	if (!buffer) {
-		dev_err(&intf->dev, "Weird descriptor references\n");
-		return -EINVAL;
-	}
-
-	if (!buflen) {
-		if (intf->cur_altsetting->endpoint->extralen && intf->cur_altsetting->endpoint->extra) {
-			dev_dbg(&intf->dev, "Seeking extra descriptors on endpoint\n");
-			buflen = intf->cur_altsetting->endpoint->extralen;
-			buffer = intf->cur_altsetting->endpoint->extra;
-		} else {
-			dev_err(&intf->dev, "Zero length descriptor references\n");
-			return -EINVAL;
-		}
-	}
-
-	while (buflen > 0) {
-		if (buffer[1] != USB_DT_CS_INTERFACE) {
-			dev_err(&intf->dev, "skipping garbage\n");
-			goto next_desc;
-		}
-
-		switch (buffer[2]) {
-		case USB_CDC_UNION_TYPE: /* we've found it */
-			if (union_header) {
-				dev_err(&intf->dev, "More than one union descriptor, skipping ...\n");
-				goto next_desc;
-			}
-			union_header = (struct usb_cdc_union_desc *)buffer;
-			break;
-		case USB_CDC_COUNTRY_TYPE: /* export through sysfs */
-			cfd = (struct usb_cdc_country_functional_desc *)buffer;
-			break;
-		case USB_CDC_HEADER_TYPE: /* maybe check version */
-			break; /* for now we ignore it */
-		case USB_CDC_CALL_MANAGEMENT_TYPE:
-			call_interface_num = buffer[4];
-			break;
-		default:
-			/* there are LOTS more CDC descriptors that
-			 * could legitimately be found here.
-			 */
-			dev_dbg(&intf->dev, "Ignoring descriptor: type %02x, length %d\n", buffer[2], buffer[0]);
-			break;
-		}
-next_desc:
-		buflen -= buffer[0];
-		buffer += buffer[0];
-	}
-
-	if (!union_header) {
-		if (call_interface_num > 0) {
-			dev_dbg(&intf->dev, "No union descriptor, using call management descriptor\n");
-			data_interface = usb_ifnum_to_if(usb_dev, (data_interface_num = call_interface_num));
-			control_interface = intf;
-		} else {
-			dev_dbg(&intf->dev, "No union descriptor, giving up\n");
-			return -ENODEV;
-		}
-	} else {
-		control_interface = usb_ifnum_to_if(usb_dev, union_header->bMasterInterface0);
-		data_interface    = usb_ifnum_to_if(usb_dev, (data_interface_num = union_header->bSlaveInterface0));
-		if (!control_interface || !data_interface) {
-			dev_dbg(&intf->dev, "no interfaces\n");
-			return -ENODEV;
-		}
-	}
-
-	if (data_interface_num != call_interface_num)
-		dev_dbg(&intf->dev, "Separate call control interface. That is not fully supported.\n");
-
-	/* workaround for switched interfaces */
-	if (data_interface->cur_altsetting->desc.bInterfaceClass != CDC_DATA_INTERFACE_TYPE) {
-		if (control_interface->cur_altsetting->desc.bInterfaceClass == CDC_DATA_INTERFACE_TYPE) {
-			struct usb_interface *t;
-
-			t = control_interface;
-			control_interface = data_interface;
-			data_interface = t;
-		} else {
-			return -EINVAL;
-		}
-	}
-
-	/* Accept probe requests only for the control interface */
-	if (intf != control_interface)
-		return -ENODEV;
-
-	if (usb_interface_claimed(data_interface)) { /* valid in this context */
-		dev_dbg(&intf->dev, "The data interface isn't available\n");
-		return -EBUSY;
-	}
-
-	if (data_interface->cur_altsetting->desc.bNumEndpoints < 2)
-		return -EINVAL;
-
-	epctrl  = &control_interface->cur_altsetting->endpoint[0].desc;
-	epread  = &data_interface->cur_altsetting->endpoint[0].desc;
-	epwrite = &data_interface->cur_altsetting->endpoint[1].desc;
-	if (!usb_endpoint_dir_in(epread)) {
-		struct usb_endpoint_descriptor *t;
-		t   = epread;
-		epread  = epwrite;
-		epwrite = t;
-	}
-
-	/* The documentation suggests that we allocate private storage
-	 * with the attach() entry point, but we can't allow the data
-	 * interface to remain unclaimed until then; so we need
-	 * somewhere to save the claimed interface now. */
-	serial_priv = kzalloc(sizeof(struct vizzini_serial_private),
-			      GFP_KERNEL);
-	if (!serial_priv)
-		goto alloc_fail;
-	usb_set_serial_data(serial, serial_priv);
-
-	//usb_driver_claim_interface(&vizzini_driver, data_interface, NULL);
-
-	/* Don't set the data interface private data.  When we
-	 * disconnect we test this field against NULL to discover
-	 * whether we're dealing with the control or data
-	 * interface. */
-	serial_priv->data_interface = data_interface;
-
-	return 0;
-
-alloc_fail:
-	return -ENOMEM;
-}
-
-static struct usb_serial_driver vizzini_device = {
-	.driver = {
-		.owner =    THIS_MODULE,
-		.name =     "vizzini",
-	},
-	.description =		"Vizzini USB serial port",
-	.id_table =		id_table,
-	.calc_num_ports	=	vizzini_calc_num_ports,
-	.probe =		vizzini_probe,
-	.open =			vizzini_open,
-	.close =		vizzini_close,
-	.write =		vizzini_write,
-	.write_room =		vizzini_write_room,
-	.ioctl =		vizzini_ioctl,
-	.set_termios =		vizzini_set_termios,
-	.break_ctl =		vizzini_break_ctl,
-	.tiocmget =		vizzini_tiocmget,
-	.tiocmset =		vizzini_tiocmset,
-	.attach =		vizzini_attach,
-	.disconnect =		vizzini_serial_disconnect,
-	.release =		vizzini_serial_release,
-	.read_int_callback =	vizzini_int_callback,
-};
-
-static struct usb_serial_driver * const serial_drivers[] = {
-	&vizzini_device, NULL
-};
-
-module_usb_serial_driver(serial_drivers, id_table);
-
-MODULE_AUTHOR(DRIVER_AUTHOR);
-MODULE_DESCRIPTION(DRIVER_DESC);
-MODULE_VERSION(DRIVER_VERSION);
-MODULE_LICENSE("GPL");