usbcore: add usb_device_driver definition
This patch (as732) adds a usb_device_driver structure, for representing
drivers that manage an entire USB device as opposed to just an
interface. Support routines like usb_register_device_driver,
usb_deregister_device_driver, usb_probe_device, and usb_unbind_device
are also added.
Unlike an earlier version of this patch, the new code is type-safe. To
accomplish this, the existing struct driver embedded in struct
usb_driver had to be wrapped in an intermediate wrapper. This enables
the core to tell at runtime whether a particular struct driver belongs
to a device driver or to an interface driver.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/drivers/usb/core/generic.c b/drivers/usb/core/generic.c
index 7bab976..fa6f34a 100644
--- a/drivers/usb/core/generic.c
+++ b/drivers/usb/core/generic.c
@@ -21,14 +21,12 @@
#include <linux/usb.h>
#include "usb.h"
-static int generic_probe(struct device *dev)
+static int generic_probe(struct usb_device *udev)
{
return 0;
}
-static int generic_remove(struct device *dev)
+static void generic_disconnect(struct usb_device *udev)
{
- struct usb_device *udev = to_usb_device(dev);
-
/* if this is only an unbind, not a physical disconnect, then
* unconfigure the device */
if (udev->state == USB_STATE_CONFIGURED)
@@ -37,17 +35,10 @@
/* in case the call failed or the device was suspended */
if (udev->state >= USB_STATE_CONFIGURED)
usb_disable_device(udev, 0);
- return 0;
}
-struct device_driver usb_generic_driver = {
- .owner = THIS_MODULE,
+struct usb_device_driver usb_generic_driver = {
.name = "usb",
- .bus = &usb_bus_type,
.probe = generic_probe,
- .remove = generic_remove,
+ .disconnect = generic_disconnect,
};
-
-/* Fun hack to determine if the struct device is a
- * usb device or a usb interface. */
-int usb_generic_driver_data;