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Re: [Qemu-devel] usb_packet_complete: Assertion ... failed
From: |
Gerd Hoffmann |
Subject: |
Re: [Qemu-devel] usb_packet_complete: Assertion ... failed |
Date: |
Mon, 02 Jul 2012 17:47:35 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:10.0.5) Gecko/20120601 Thunderbird/10.0.5 |
> diff --git a/hw/usb/core.c b/hw/usb/core.c
> index 0e02da7..eacda74 100644
> --- a/hw/usb/core.c
> +++ b/hw/usb/core.c
> @@ -407,7 +407,9 @@ void usb_packet_complete(USBDevice *dev, USBPacket *p)
> int ret;
>
> usb_packet_check_state(p, USB_PACKET_ASYNC);
> - assert(QTAILQ_FIRST(&ep->queue) == p);
> + if (QTAILQ_FIRST(&ep->queue) != p) {
> + trace_usb_assert(usb_bus_from_device(dev)->busnr, dev->port->path,
> p->ep->nr, p);
> + }
Can you also log QTAILQ_FIRST(&ep->queue) there?
usb_host_* & usb_packet_state_* tracepoints are good to have, usb_uhci_*
is not needed.
>From the trace it looks like the packets are completing in the same
order they have been submitted as they should, I'm puzzled why the
assert triggers ...
Can I also get a "lsusb -v" for the usb device in question?
cheers,
Gerd