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, 4 deletions

diff --git a/hw/usb/dev-serial.c b/hw/usb/dev-serial.c
index f347c05b54..67c2072ce7 100644
--- a/hw/usb/dev-serial.c
+++ b/hw/usb/dev-serial.c
@@ -549,8 +549,6 @@ static USBDevice *usb_serial_init(USBBus *bus, const char *filename)
         qdev_prop_set_uint16(&dev->qdev, "vendorid", vendorid);
     if (productid)
         qdev_prop_set_uint16(&dev->qdev, "productid", productid);
-    qdev_init_nofail(&dev->qdev);
-
     return dev;
 }
 
@@ -565,8 +563,6 @@ static USBDevice *usb_braille_init(USBBus *bus, const char *unused)
 
     dev = usb_create(bus, "usb-braille");
     qdev_prop_set_chr(&dev->qdev, "chardev", cdrv);
-    qdev_init_nofail(&dev->qdev);
-
     return dev;
 }