v4.19.13 snapshot.
diff --git a/drivers/usb/serial/navman.c b/drivers/usb/serial/navman.c
new file mode 100644
index 0000000..20277c5
--- /dev/null
+++ b/drivers/usb/serial/navman.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Navman Serial USB driver
+ *
+ * Copyright (C) 2006 Greg Kroah-Hartman <gregkh@suse.de>
+ *
+ * TODO:
+ * Add termios method that uses copy_hw but also kills all echo
+ * flags as the navman is rx only so cannot echo.
+ */
+
+#include <linux/gfp.h>
+#include <linux/kernel.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include <linux/usb/serial.h>
+
+static const struct usb_device_id id_table[] = {
+ { USB_DEVICE(0x0a99, 0x0001) }, /* Talon Technology device */
+ { USB_DEVICE(0x0df7, 0x0900) }, /* Mobile Action i-gotU */
+ { },
+};
+MODULE_DEVICE_TABLE(usb, id_table);
+
+static void navman_read_int_callback(struct urb *urb)
+{
+ struct usb_serial_port *port = urb->context;
+ unsigned char *data = urb->transfer_buffer;
+ 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;
+ }
+
+ usb_serial_debug_data(&port->dev, __func__, urb->actual_length, data);
+
+ if (urb->actual_length) {
+ tty_insert_flip_string(&port->port, data, urb->actual_length);
+ tty_flip_buffer_push(&port->port);
+ }
+
+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 navman_open(struct tty_struct *tty, struct usb_serial_port *port)
+{
+ int result = 0;
+
+ if (port->interrupt_in_urb) {
+ dev_dbg(&port->dev, "%s - adding interrupt input for treo\n",
+ __func__);
+ 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);
+ }
+ return result;
+}
+
+static void navman_close(struct usb_serial_port *port)
+{
+ usb_kill_urb(port->interrupt_in_urb);
+}
+
+static int navman_write(struct tty_struct *tty, struct usb_serial_port *port,
+ const unsigned char *buf, int count)
+{
+ /*
+ * This device can't write any data, only read from the device
+ */
+ return -EOPNOTSUPP;
+}
+
+static struct usb_serial_driver navman_device = {
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "navman",
+ },
+ .id_table = id_table,
+ .num_ports = 1,
+ .open = navman_open,
+ .close = navman_close,
+ .write = navman_write,
+ .read_int_callback = navman_read_int_callback,
+};
+
+static struct usb_serial_driver * const serial_drivers[] = {
+ &navman_device, NULL
+};
+
+module_usb_serial_driver(serial_drivers, id_table);
+
+MODULE_LICENSE("GPL v2");