Messages in this thread | | | Date | Wed, 21 Jan 2009 10:11:24 -0800 | From | Greg KH <> | Subject | Re: "permanently" unbind a device from a driver? |
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On Wed, Jan 21, 2009 at 05:20:45PM -0000, Sam Liddicott wrote: > * Greg KH wrote, On 21/01/09 16:23: > > On Wed, Jan 21, 2009 at 11:44:03PM +0800, Ming Lei wrote: > > > >> 2009/1/21 Greg KH <greg@kroah.com>: > >> > >>> Just add a blacklist rule to the usbhid driver for this device. There > >>> are a number of devices out there that need this functionality, which is > >>> why there is such a list. > >>> > >> Is it possible to implement a generic blacklist mechanism in driver core > >> to support the function for all kinds of drivers? or is it necessary to do that? > >> > > > > It's not necessary as the hid core already supports this very thing due > > to the need for it (it's the easiest way to write a userspace Windows > > driver, so lots of manufacturers lie about their devices in order to > > work around having to write a Windows kernel driver.) > > > > So just add this device to the hid core blacklist, and you are all set. > > > > Care to send a patch? > > > > I've often felt that a /proc or /sys interface to allow blacklist > additions or quirk addition would be great.
Some subsystems support this, like the HID subsystem :)
It is a subsystem-specific thing as they all do their binding in different ways, we can't make this "generic" very easily, sorry.
> Hacking of new devices often runs faster than distro's kernel releases; > it will often be very simple to distribute a 1 liner to make some > hardware available than tell people to wait until the next major release > of their distro. > > As a point in instance, a couple of years ago I gave up trying to get > some quirks added for usb dual and quad joystick adaptors. I got them > added for one of them but not the other. It was just too much hard work.
Where did you send them? That shouldn't happen, sorry about that.
> An user-space post-boot uploadable quirk/blacklist would be great and > IMHO result in a bigger supply of quirks.
Again, some subsystems, like HID already support this.
thanks,
greg k-h
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