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Fix -usbdevice crash

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If -usbdevice is used on a machine with no USB busses, usb_create
will fail and return NULL.  Patch below handles this failure gracefully
rather than crashing when we try to init the device.

Signed-off-by: Paul Brook <paul@codesourcery.com>
This commit is contained in:
Paul Brook 2010-02-25 13:29:06 +00:00
parent 23f2166d73
commit d44168fffa
4 changed files with 12 additions and 0 deletions
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3
hw/usb-serial.c
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@ -594,6 +594,9 @@ static USBDevice *usb_serial_init(const char *filename)
return NULL;
dev = usb_create(NULL /* FIXME */, "usb-serial");
if (!dev) {
return NULL;
}
qdev_prop_set_chr(&dev->qdev, "chardev", cdrv);
if (vendorid)
qdev_prop_set_uint16(&dev->qdev, "vendorid", vendorid);