usb: Improve -usbdevice error reporting a bit

Most LegacyUSBFactory usbdevice_init() methods realize with
qdev_init_nofail(), even though their caller usbdevice_create() can
handle failure.  Okay if it really can't fail (I didn't check), but
somewhat brittle.

usb_msd_init() and usb_bt_init() call qdev_init().  The latter
additionally reports an error when qdev_init() fails.

Realization failure produces multiple error reports: a specific one
from qdev_init(), and generic ones from usb_bt_init(),
usb_create_simple(), usbdevice_create() and usb_parse().

Remove realization from the usbdevice_init() methods.  Realize in
usbdevice_create(), and produce exactly one error message there.  You
still get another one from usb_parse().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>

1 files changed, 0 insertions, 5 deletions

diff --git a/hw/usb/dev-bluetooth.c b/hw/usb/dev-bluetooth.c
index 8b3b316..9bf6730 100644
--- a/hw/usb/dev-bluetooth.c
+++ b/hw/usb/dev-bluetooth.c
@@ -536,11 +536,6 @@ static USBDevice *usb_bt_init(USBBus *bus, const char *cmdline)
     dev = usb_create(bus, name);
     s = DO_UPCAST(struct USBBtState, dev, dev);
     s->hci = hci;
-    if (qdev_init(&dev->qdev) < 0) {
-        error_report("Failed to initialize USB device '%s'", name);
-        return NULL;
-    }
-
     return dev;
 }