On Sun, 2007-06-03 at 08:40 -0400, Justin Piszcz wrote:
The usb_device class was created to replace the /proc usbfs device nodes
which can't handle access-control-lists for logged-in users.
The device nodes worked fine, but plugging into the device events to
trigger userspace device handling created a bunch of problems with the
event timing. We have several open bugs, that can't be fixed properly
with using the usb_device-devices.
We changed the driver core to allow us to export device nodes directly
by bus-devices, instead of forcing us to create artificial devices like
the usb_device-class, just to export device nodes to userspace. If
systems set CONFIG_USB_DEVICE_CLASS=n (which defaults to yes now), one
new udev rule is needed, to replace the functionality of the
usb_device-class devices. Also the next version of HAL (which is where
nut receives the events from) will depend on the new device nodes, and
will not longer use usb_device devices. No changes to nut should be
needed.
Thanks,
Kay
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