On Thursday 09 June 2005 17:50, Maksim Yevmenkin wrote:
> Norbert,
>
> > when running usbd (under FreeBSD 4.11) with
> > -dv switches I can see that a usb keyboard
> > correctly attaches as ukbd0,
> > but detaches as fall-through "USB device".
>
> does something like
>
> device "USB keyboard"
> devname "ukbd[0-9]+"
> attach "foo"
> detach "bar"
>
I'm not sure if detach is supported like that, because the "ukbd" device name
will not be passed to "usbd" during detach. Then one needs to match against
the class/subclass of the USB-keyboard:
device "USB keyboard"
class 3
subclass 1
detach "xxxx ukbd0"
Else if devd is not available on 4.11 you will have to change some code and
compile a new kernel, from what I can see.
To the file /sys/dev/usb/ukbd.c add this:
static void
usbd_add_device_detach_event(device_t self)
{
struct usb_event ue;
bzero(&ue, sizeof(ue));
strlcpy(ue.u.ue_device.udi_devnames[0],
device_get_nameunit(self), USB_MAX_DEVNAMELEN) ;
usb_add_event(USB_EVENT_DEVICE_DETACH, &ue);
return;
}
ukbd_detach()
{
...
usbd_add_device_detach_event(self);
return (0);
}
This will make the suggestion from Maksim work.
A generic solution would be to call "usbd_add_device_detach_event()" from the
"bus_child_detached" method of uhub, which must be added.
Also one can change "usb_disconnect_port()" to generate the event before the
sub-devices are detached, but that might not work in all cases.
--HPS
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