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@xxxxxxxxx>: > >> > >>> 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 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
