Re: [Qemu-devel] [PATCH] usb: Fix usb-bt-dongle segfault.

[Hani Benhabiles]

On Mon, Jun 16, 2014 at 11:00:42AM +0200, Paolo Bonzini wrote:
> Il 15/06/2014 23:37, Hani Benhabiles ha scritto:
> >>>diff --git a/hw/usb/dev-bluetooth.c b/hw/usb/dev-bluetooth.c
> >>>index a9661d2..6d02343 100644
> >>>--- a/hw/usb/dev-bluetooth.c
> >>>+++ b/hw/usb/dev-bluetooth.c
> >>>@@ -506,6 +506,12 @@ static int usb_bt_initfn(USBDevice *dev)
> >>>
> >>>    usb_desc_create_serial(dev);
> >>>    usb_desc_init(dev);
> >>>+    s->dev.opaque = s;
> >>>+    s->hci = bt_new_hci(qemu_find_bt_vlan(0));
> >>>+    s->hci->opaque = s;
> >>>+    s->hci->evt_recv = usb_bt_out_hci_packet_event;
> >>>+    s->hci->acl_recv = usb_bt_out_hci_packet_acl;
> >>>+    usb_bt_handle_reset(&s->dev);
> >>
> >>
> >>All lines but the s->hci assignment should be removed from usb_bt_init too.
> >>
> >>As to s->hci, I suggest inlining usb_create_simple into usb_bt_init, and
> >>initializing s->hci there before doing the qdev_init() call.
> >>
> >>Then here you can wrap the assignment under "if (!s->hci)".
> >
> >I am afraid I don't quite understand what you want to achieve with this and 
> >why.
> >
> >Could you please explain how is usb_bt_init() relevant to this case ?
> 
> usb_bt_init() ends up calling usb_bt_initfn(), via usb_create_simple. So if
> you add code to usb_bt_initfn() you can remove the corresponding lines in
> usb_bt_init().

Thanks for the clarification. I forgot about -usbdevice bt, will send v2 
shortly.