Re: Why my usb mouse don't have report/physical descriptors

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On Tue, Jul 27, 2010 at 10:03:55PM +0800, Xiaofan Chen wrote:
> On Tue, Jul 27, 2010 at 9:35 PM, Greg KH <greg@xxxxxxxxx> wrote:
> >> It would be nice that usbutils to be changed to automatically
> >> detach and attach the kernel HID driver for HID descriptor dumping.
> >
> > It needs root permissions to accomplish this, so it's not something that
> > I can add to usbutils directly.
> >
> 
> But if you do not detach the kernel hid driver, even you run
> lsusb as root it will not be able to dump the hid descriptors.
> To retach the driver back, then you gain the mouse functionality back.

Agreed, it's just that detaching and attaching requires root
permissions.

> As for if it is good or not to have a udev rule to enable the access of
> mouse/keyboard for normal users, that is another story. For other
> HID device, probably it is not too bad.

Problem is, it's hard to determine which device is "not too bad" :)

I think it's such a minor issue that it's not really worth it, don't
you?

thanks,

greg k-h
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