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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/usb/serial/visor.c
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/usb/serial/visor.c')
-rw-r--r--drivers/usb/serial/visor.c580
1 files changed, 580 insertions, 0 deletions
diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
new file mode 100644
index 000000000..4412834db
--- /dev/null
+++ b/drivers/usb/serial/visor.c
@@ -0,0 +1,580 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * USB HandSpring Visor, Palm m50x, and Sony Clie driver
+ * (supports all of the Palm OS USB devices)
+ *
+ * Copyright (C) 1999 - 2004
+ * Greg Kroah-Hartman (greg@kroah.com)
+ *
+ * See Documentation/usb/usb-serial.rst for more information on using this
+ * driver
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/slab.h>
+#include <linux/tty.h>
+#include <linux/tty_driver.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/spinlock.h>
+#include <linux/uaccess.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+#include <linux/usb/cdc.h>
+#include "visor.h"
+
+/*
+ * Version Information
+ */
+#define DRIVER_AUTHOR "Greg Kroah-Hartman <greg@kroah.com>"
+#define DRIVER_DESC "USB HandSpring Visor / Palm OS driver"
+
+/* function prototypes for a handspring visor */
+static int visor_open(struct tty_struct *tty, struct usb_serial_port *port);
+static void visor_close(struct usb_serial_port *port);
+static int visor_probe(struct usb_serial *serial,
+ const struct usb_device_id *id);
+static int visor_calc_num_ports(struct usb_serial *serial,
+ struct usb_serial_endpoints *epds);
+static int clie_5_calc_num_ports(struct usb_serial *serial,
+ struct usb_serial_endpoints *epds);
+static void visor_read_int_callback(struct urb *urb);
+static int clie_3_5_startup(struct usb_serial *serial);
+static int palm_os_3_probe(struct usb_serial *serial,
+ const struct usb_device_id *id);
+static int palm_os_4_probe(struct usb_serial *serial,
+ const struct usb_device_id *id);
+
+static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_3_probe },
+ { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(ACER_VENDOR_ID, ACER_S10_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE_INTERFACE_CLASS(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID, 0xff),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { } /* Terminating entry */
+};
+
+static const struct usb_device_id clie_id_5_table[] = {
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID),
+ .driver_info = (kernel_ulong_t)&palm_os_4_probe },
+ { } /* Terminating entry */
+};
+
+static const struct usb_device_id clie_id_3_5_table[] = {
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
+ { } /* Terminating entry */
+};
+
+static const struct usb_device_id id_table_combined[] = {
+ { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_VISOR_ID) },
+ { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO_ID) },
+ { USB_DEVICE(HANDSPRING_VENDOR_ID, HANDSPRING_TREO600_ID) },
+ { USB_DEVICE(GSPDA_VENDOR_ID, GSPDA_XPLORE_M68_ID) },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_M500_ID) },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_M505_ID) },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_M515_ID) },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_I705_ID) },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_M100_ID) },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_M125_ID) },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_M130_ID) },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_T_ID) },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_TREO_650) },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_TUNGSTEN_Z_ID) },
+ { USB_DEVICE(PALM_VENDOR_ID, PALM_ZIRE_ID) },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_3_5_ID) },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_0_ID) },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_S360_ID) },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_4_1_ID) },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NX60_ID) },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_NZ90V_ID) },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_UX50_ID) },
+ { USB_DEVICE(SONY_VENDOR_ID, SONY_CLIE_TJ25_ID) },
+ { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SCH_I330_ID) },
+ { USB_DEVICE(SAMSUNG_VENDOR_ID, SAMSUNG_SPH_I500_ID) },
+ { USB_DEVICE(TAPWAVE_VENDOR_ID, TAPWAVE_ZODIAC_ID) },
+ { USB_DEVICE(GARMIN_VENDOR_ID, GARMIN_IQUE_3600_ID) },
+ { USB_DEVICE(ACEECA_VENDOR_ID, ACEECA_MEZ1000_ID) },
+ { USB_DEVICE(KYOCERA_VENDOR_ID, KYOCERA_7135_ID) },
+ { USB_DEVICE(FOSSIL_VENDOR_ID, FOSSIL_ABACUS_ID) },
+ { } /* Terminating entry */
+};
+
+MODULE_DEVICE_TABLE(usb, id_table_combined);
+
+/* All of the device info needed for the Handspring Visor,
+ and Palm 4.0 devices */
+static struct usb_serial_driver handspring_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "visor",
+ },
+ .description = "Handspring Visor / Palm OS",
+ .id_table = id_table,
+ .num_ports = 2,
+ .bulk_out_size = 256,
+ .open = visor_open,
+ .close = visor_close,
+ .throttle = usb_serial_generic_throttle,
+ .unthrottle = usb_serial_generic_unthrottle,
+ .probe = visor_probe,
+ .calc_num_ports = visor_calc_num_ports,
+ .read_int_callback = visor_read_int_callback,
+};
+
+/* All of the device info needed for the Clie UX50, TH55 Palm 5.0 devices */
+static struct usb_serial_driver clie_5_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "clie_5",
+ },
+ .description = "Sony Clie 5.0",
+ .id_table = clie_id_5_table,
+ .num_ports = 2,
+ .num_bulk_out = 2,
+ .bulk_out_size = 256,
+ .open = visor_open,
+ .close = visor_close,
+ .throttle = usb_serial_generic_throttle,
+ .unthrottle = usb_serial_generic_unthrottle,
+ .probe = visor_probe,
+ .calc_num_ports = clie_5_calc_num_ports,
+ .read_int_callback = visor_read_int_callback,
+};
+
+/* device info for the Sony Clie OS version 3.5 */
+static struct usb_serial_driver clie_3_5_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "clie_3.5",
+ },
+ .description = "Sony Clie 3.5",
+ .id_table = clie_id_3_5_table,
+ .num_ports = 1,
+ .bulk_out_size = 256,
+ .open = visor_open,
+ .close = visor_close,
+ .throttle = usb_serial_generic_throttle,
+ .unthrottle = usb_serial_generic_unthrottle,
+ .attach = clie_3_5_startup,
+};
+
+static struct usb_serial_driver * const serial_drivers[] = {
+ &handspring_device, &clie_5_device, &clie_3_5_device, NULL
+};
+
+/******************************************************************************
+ * Handspring Visor specific driver functions
+ ******************************************************************************/
+static int visor_open(struct tty_struct *tty, struct usb_serial_port *port)
+{
+ int result = 0;
+
+ if (!port->read_urb) {
+ /* this is needed for some brain dead Sony devices */
+ dev_err(&port->dev, "Device lied about number of ports, please use a lower one.\n");
+ return -ENODEV;
+ }
+
+ /* Start reading from the device */
+ result = usb_serial_generic_open(tty, port);
+ if (result)
+ goto exit;
+
+ if (port->interrupt_in_urb) {
+ dev_dbg(&port->dev, "adding interrupt input for treo\n");
+ result = usb_submit_urb(port->interrupt_in_urb, GFP_KERNEL);
+ if (result)
+ dev_err(&port->dev,
+ "%s - failed submitting interrupt urb, error %d\n",
+ __func__, result);
+ }
+exit:
+ return result;
+}
+
+
+static void visor_close(struct usb_serial_port *port)
+{
+ unsigned char *transfer_buffer;
+
+ usb_serial_generic_close(port);
+ usb_kill_urb(port->interrupt_in_urb);
+
+ transfer_buffer = kmalloc(0x12, GFP_KERNEL);
+ if (!transfer_buffer)
+ return;
+ usb_control_msg(port->serial->dev,
+ usb_rcvctrlpipe(port->serial->dev, 0),
+ VISOR_CLOSE_NOTIFICATION, 0xc2,
+ 0x0000, 0x0000,
+ transfer_buffer, 0x12, 300);
+ kfree(transfer_buffer);
+}
+
+static void visor_read_int_callback(struct urb *urb)
+{
+ struct usb_serial_port *port = urb->context;
+ int status = urb->status;
+ int result;
+
+ switch (status) {
+ case 0:
+ /* success */
+ break;
+ case -ECONNRESET:
+ case -ENOENT:
+ case -ESHUTDOWN:
+ /* this urb is terminated, clean up */
+ dev_dbg(&port->dev, "%s - urb shutting down with status: %d\n",
+ __func__, status);
+ return;
+ default:
+ dev_dbg(&port->dev, "%s - nonzero urb status received: %d\n",
+ __func__, status);
+ goto exit;
+ }
+
+ /*
+ * This information is still unknown what it can be used for.
+ * If anyone has an idea, please let the author know...
+ *
+ * Rumor has it this endpoint is used to notify when data
+ * is ready to be read from the bulk ones.
+ */
+ usb_serial_debug_data(&port->dev, __func__, urb->actual_length,
+ urb->transfer_buffer);
+
+exit:
+ result = usb_submit_urb(urb, GFP_ATOMIC);
+ if (result)
+ dev_err(&urb->dev->dev,
+ "%s - Error %d submitting interrupt urb\n",
+ __func__, result);
+}
+
+static int palm_os_3_probe(struct usb_serial *serial,
+ const struct usb_device_id *id)
+{
+ struct device *dev = &serial->dev->dev;
+ struct visor_connection_info *connection_info;
+ unsigned char *transfer_buffer;
+ char *string;
+ int retval = 0;
+ int i;
+ int num_ports = 0;
+
+ transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
+ if (!transfer_buffer)
+ return -ENOMEM;
+
+ /* send a get connection info request */
+ retval = usb_control_msg(serial->dev,
+ usb_rcvctrlpipe(serial->dev, 0),
+ VISOR_GET_CONNECTION_INFORMATION,
+ 0xc2, 0x0000, 0x0000, transfer_buffer,
+ sizeof(*connection_info), 300);
+ if (retval < 0) {
+ dev_err(dev, "%s - error %d getting connection information\n",
+ __func__, retval);
+ goto exit;
+ }
+
+ if (retval != sizeof(*connection_info)) {
+ dev_err(dev, "Invalid connection information received from device\n");
+ retval = -ENODEV;
+ goto exit;
+ }
+
+ connection_info = (struct visor_connection_info *)transfer_buffer;
+
+ num_ports = le16_to_cpu(connection_info->num_ports);
+
+ /* Handle devices that report invalid stuff here. */
+ if (num_ports == 0 || num_ports > 2) {
+ dev_warn(dev, "%s: No valid connect info available\n",
+ serial->type->description);
+ num_ports = 2;
+ }
+
+ for (i = 0; i < num_ports; ++i) {
+ switch (connection_info->connections[i].port_function_id) {
+ case VISOR_FUNCTION_GENERIC:
+ string = "Generic";
+ break;
+ case VISOR_FUNCTION_DEBUGGER:
+ string = "Debugger";
+ break;
+ case VISOR_FUNCTION_HOTSYNC:
+ string = "HotSync";
+ break;
+ case VISOR_FUNCTION_CONSOLE:
+ string = "Console";
+ break;
+ case VISOR_FUNCTION_REMOTE_FILE_SYS:
+ string = "Remote File System";
+ break;
+ default:
+ string = "unknown";
+ break;
+ }
+ dev_info(dev, "%s: port %d, is for %s use\n",
+ serial->type->description,
+ connection_info->connections[i].port, string);
+ }
+ dev_info(dev, "%s: Number of ports: %d\n", serial->type->description,
+ num_ports);
+
+ /*
+ * save off our num_ports info so that we can use it in the
+ * calc_num_ports callback
+ */
+ usb_set_serial_data(serial, (void *)(long)num_ports);
+
+ /* ask for the number of bytes available, but ignore the
+ response as it is broken */
+ retval = usb_control_msg(serial->dev,
+ usb_rcvctrlpipe(serial->dev, 0),
+ VISOR_REQUEST_BYTES_AVAILABLE,
+ 0xc2, 0x0000, 0x0005, transfer_buffer,
+ 0x02, 300);
+ if (retval < 0)
+ dev_err(dev, "%s - error %d getting bytes available request\n",
+ __func__, retval);
+ retval = 0;
+
+exit:
+ kfree(transfer_buffer);
+
+ return retval;
+}
+
+static int palm_os_4_probe(struct usb_serial *serial,
+ const struct usb_device_id *id)
+{
+ struct device *dev = &serial->dev->dev;
+ struct palm_ext_connection_info *connection_info;
+ unsigned char *transfer_buffer;
+ int retval;
+
+ transfer_buffer = kmalloc(sizeof(*connection_info), GFP_KERNEL);
+ if (!transfer_buffer)
+ return -ENOMEM;
+
+ retval = usb_control_msg(serial->dev,
+ usb_rcvctrlpipe(serial->dev, 0),
+ PALM_GET_EXT_CONNECTION_INFORMATION,
+ 0xc2, 0x0000, 0x0000, transfer_buffer,
+ sizeof(*connection_info), 300);
+ if (retval < 0)
+ dev_err(dev, "%s - error %d getting connection info\n",
+ __func__, retval);
+ else
+ usb_serial_debug_data(dev, __func__, retval, transfer_buffer);
+
+ kfree(transfer_buffer);
+ return 0;
+}
+
+
+static int visor_probe(struct usb_serial *serial,
+ const struct usb_device_id *id)
+{
+ int retval = 0;
+ int (*startup)(struct usb_serial *serial,
+ const struct usb_device_id *id);
+
+ /*
+ * some Samsung Android phones in modem mode have the same ID
+ * as SPH-I500, but they are ACM devices, so dont bind to them
+ */
+ if (id->idVendor == SAMSUNG_VENDOR_ID &&
+ id->idProduct == SAMSUNG_SPH_I500_ID &&
+ serial->dev->descriptor.bDeviceClass == USB_CLASS_COMM &&
+ serial->dev->descriptor.bDeviceSubClass ==
+ USB_CDC_SUBCLASS_ACM)
+ return -ENODEV;
+
+ if (serial->dev->actconfig->desc.bConfigurationValue != 1) {
+ dev_err(&serial->dev->dev, "active config #%d != 1 ??\n",
+ serial->dev->actconfig->desc.bConfigurationValue);
+ return -ENODEV;
+ }
+
+ if (id->driver_info) {
+ startup = (void *)id->driver_info;
+ retval = startup(serial, id);
+ }
+
+ return retval;
+}
+
+static int visor_calc_num_ports(struct usb_serial *serial,
+ struct usb_serial_endpoints *epds)
+{
+ unsigned int vid = le16_to_cpu(serial->dev->descriptor.idVendor);
+ int num_ports = (int)(long)(usb_get_serial_data(serial));
+
+ if (num_ports)
+ usb_set_serial_data(serial, NULL);
+
+ /*
+ * Only swap the bulk endpoints for the Handspring devices with
+ * interrupt in endpoints, which for now are the Treo devices.
+ */
+ if (!(vid == HANDSPRING_VENDOR_ID || vid == KYOCERA_VENDOR_ID) ||
+ epds->num_interrupt_in == 0)
+ goto out;
+
+ if (epds->num_bulk_in < 2 || epds->num_interrupt_in < 2) {
+ dev_err(&serial->interface->dev, "missing endpoints\n");
+ return -ENODEV;
+ }
+
+ /*
+ * It appears that Treos and Kyoceras want to use the
+ * 1st bulk in endpoint to communicate with the 2nd bulk out endpoint,
+ * so let's swap the 1st and 2nd bulk in and interrupt endpoints.
+ * Note that swapping the bulk out endpoints would break lots of
+ * apps that want to communicate on the second port.
+ */
+ swap(epds->bulk_in[0], epds->bulk_in[1]);
+ swap(epds->interrupt_in[0], epds->interrupt_in[1]);
+out:
+ return num_ports;
+}
+
+static int clie_5_calc_num_ports(struct usb_serial *serial,
+ struct usb_serial_endpoints *epds)
+{
+ /*
+ * TH55 registers 2 ports.
+ * Communication in from the UX50/TH55 uses the first bulk-in
+ * endpoint, while communication out to the UX50/TH55 uses the second
+ * bulk-out endpoint.
+ */
+
+ /*
+ * FIXME: Should we swap the descriptors instead of using the same
+ * bulk-out endpoint for both ports?
+ */
+ epds->bulk_out[0] = epds->bulk_out[1];
+
+ return serial->type->num_ports;
+}
+
+static int clie_3_5_startup(struct usb_serial *serial)
+{
+ struct device *dev = &serial->dev->dev;
+ int result;
+ u8 *data;
+
+ data = kmalloc(1, GFP_KERNEL);
+ if (!data)
+ return -ENOMEM;
+
+ /*
+ * Note that PEG-300 series devices expect the following two calls.
+ */
+
+ /* get the config number */
+ result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+ USB_REQ_GET_CONFIGURATION, USB_DIR_IN,
+ 0, 0, data, 1, 3000);
+ if (result < 0) {
+ dev_err(dev, "%s: get config number failed: %d\n",
+ __func__, result);
+ goto out;
+ }
+ if (result != 1) {
+ dev_err(dev, "%s: get config number bad return length: %d\n",
+ __func__, result);
+ result = -EIO;
+ goto out;
+ }
+
+ /* get the interface number */
+ result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
+ USB_REQ_GET_INTERFACE,
+ USB_DIR_IN | USB_RECIP_INTERFACE,
+ 0, 0, data, 1, 3000);
+ if (result < 0) {
+ dev_err(dev, "%s: get interface number failed: %d\n",
+ __func__, result);
+ goto out;
+ }
+ if (result != 1) {
+ dev_err(dev,
+ "%s: get interface number bad return length: %d\n",
+ __func__, result);
+ result = -EIO;
+ goto out;
+ }
+
+ result = 0;
+out:
+ kfree(data);
+
+ return result;
+}
+
+module_usb_serial_driver(serial_drivers, id_table_combined);
+
+MODULE_AUTHOR(DRIVER_AUTHOR);
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL v2");