Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 134 insertions, 0 deletions

diff --git a/drivers/usb/serial/bus.c b/drivers/usb/serial/bus.c
new file mode 100644
index 000000000000..2f612c2d894b
--- /dev/null
+++ b/drivers/usb/serial/bus.c
@@ -0,0 +1,134 @@
+/*
+ * USB Serial Converter Bus specific functions
+ *
+ * Copyright (C) 2002 Greg Kroah-Hartman (greg@kroah.com)
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License version
+ *      2 as published by the Free Software Foundation.
+ */
+
+#include <linux/config.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/tty.h>
+#include <linux/module.h>
+#include <linux/usb.h>
+#include "usb-serial.h"
+
+static int usb_serial_device_match (struct device *dev, struct device_driver *drv)
+{
+        struct usb_serial_device_type *driver;
+        const struct usb_serial_port *port;
+
+        /*
+         * drivers are already assigned to ports in serial_probe so it's
+         * a simple check here.
+         */
+        port = to_usb_serial_port(dev);
+        if (!port)
+                return 0;
+
+        driver = to_usb_serial_driver(drv);
+
+        if (driver == port->serial->type)
+                return 1;
+
+        return 0;
+}
+
+struct bus_type usb_serial_bus_type = {
+        .name =         "usb-serial",
+        .match =        usb_serial_device_match,
+};
+
+static int usb_serial_device_probe (struct device *dev)
+{
+        struct usb_serial_device_type *driver;
+        struct usb_serial_port *port;
+        int retval = 0;
+        int minor;
+
+        port = to_usb_serial_port(dev);
+        if (!port) {
+                retval = -ENODEV;
+                goto exit;
+        }
+
+        driver = port->serial->type;
+        if (driver->port_probe) {
+                if (!try_module_get(driver->owner)) {
+                        dev_err(dev, "module get failed, exiting\n");
+                        retval = -EIO;
+                        goto exit;
+                }
+                retval = driver->port_probe (port);
+                module_put(driver->owner);
+                if (retval)
+                        goto exit;
+        }
+
+        minor = port->number;
+        tty_register_device (usb_serial_tty_driver, minor, dev);
+        dev_info(&port->serial->dev->dev, 
+                 "%s converter now attached to ttyUSB%d\n",
+                 driver->name, minor);
+
+exit:
+        return retval;
+}
+
+static int usb_serial_device_remove (struct device *dev)
+{
+        struct usb_serial_device_type *driver;
+        struct usb_serial_port *port;
+        int retval = 0;
+        int minor;
+
+        port = to_usb_serial_port(dev);
+        if (!port) {
+                return -ENODEV;
+        }
+
+        driver = port->serial->type;
+        if (driver->port_remove) {
+                if (!try_module_get(driver->owner)) {
+                        dev_err(dev, "module get failed, exiting\n");
+                        retval = -EIO;
+                        goto exit;
+                }
+                retval = driver->port_remove (port);
+                module_put(driver->owner);
+        }
+exit:
+        minor = port->number;
+        tty_unregister_device (usb_serial_tty_driver, minor);
+        dev_info(dev, "%s converter now disconnected from ttyUSB%d\n",
+                 driver->name, minor);
+
+        return retval;
+}
+
+int usb_serial_bus_register(struct usb_serial_device_type *device)
+{
+        int retval;
+
+        if (device->short_name)
+                device->driver.name = (char *)device->short_name;
+        else
+                device->driver.name = (char *)device->name;
+        device->driver.bus = &usb_serial_bus_type;
+        device->driver.probe = usb_serial_device_probe;
+        device->driver.remove = usb_serial_device_remove;
+        device->driver.owner = device->owner;
+
+        retval = driver_register(&device->driver);
+
+        return retval;
+}
+
+void usb_serial_bus_deregister(struct usb_serial_device_type *device)
+{
+        driver_unregister (&device->driver);
+}
+