usb core: use qdev for -usbdevice

This patchs adds infrastructure to handle -usbdevice via qdev callbacks.
USBDeviceInfo gets a name field (for the -usbdevice driver name) and a
callback for -usbdevice parameter parsing.

The new usbdevice_create() function walks the qdev driver list and looks
for a usb driver with a matching name.  When a parameter parsing
callback is present it is called, otherwise the device is created via
usb_create_simple().

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/vl.c b/vl.c
index ac9ff52..a58bc06 100644
--- a/vl.c
+++ b/vl.c
@@ -2556,6 +2556,11 @@ static int usb_device_add(const char *devname, int is_hotplug)
     if (!usb_enabled)
         return -1;
 
+    /* drivers with .usbdevice_name entry in USBDeviceInfo */
+    dev = usbdevice_create(devname);
+    if (dev)
+        goto done;
+
     /* simple devices which don't need extra care */
     for (i = 0; i < ARRAY_SIZE(usbdevs); i++) {
         if (strcmp(devname, usbdevs[i].name) != 0)