Re: [Qemu-devel] [PATCH V1] Re-attach usb device to kernel while usb_host_open fails

[Lin Ma]

在 2015年06月24日 11:53, Gonglei 写道:
> On 2015/6/24 11:39, Lin Ma wrote:
> > Changes in V1:
> > For avoiding regression issue, Dont remove the usb device from global hostdevs 
> > list while
> > usb speed mismatch occurs.
> >
> > Signed-off-by: Lin Ma <address@hidden>
> > ---
> The changing remarks should be lay up here,
> and use v2 suffix instead of v1.
>
> If you do this, you can add my R-by.
>         Reviewed-by: Gonglei <address@hidden>
>
> Please refer to:
> http://wiki.qemu.org/Contribute/SubmitAPatch
>
> Regards,
> -Gonglei
I must be getting tired, Sorry about that.
> >   hw/usb/host-libusb.c | 3 +++
> >   1 file changed, 3 insertions(+)
> >
> > diff --git a/hw/usb/host-libusb.c b/hw/usb/host-libusb.c
> > index bc2944c..11429f5 100644
> > --- a/hw/usb/host-libusb.c
> > +++ b/hw/usb/host-libusb.c
> > @@ -889,6 +889,9 @@ static int usb_host_open(USBHostDevice *s, libusb_device 
> > *dev)
> >   fail:
> >       trace_usb_host_open_failure(bus_num, addr);
> >       if (s->dh != NULL) {
> > +        usb_host_release_interfaces(s);
> > +        libusb_reset_device(s->dh);
> > +        usb_host_attach_kernel(s);
> >           libusb_close(s->dh);
> >           s->dh = NULL;
> >           s->dev = NULL;