linux-kernel - Re: [linux-usb-devel] [RFC] HID bus design overview.

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Message-ID: <d120d5000704020540i281912e0t8f6fd70f7785c5b8@mail.gmail.com>
Date:	Mon, 2 Apr 2007 08:40:47 -0400
From:	"Dmitry Torokhov" <dmitry.torokhov@...il.com>
To:	"Jiri Kosina" <jkosina@...e.cz>
Cc:	"Li Yu" <raise.sail@...il.com>, yanghong@...ss.com.cn,
	linux-usb-devel <linux-usb-devel@...ts.sourceforge.net>,
	hongzhiyi@...ss.com.cn, "Marcel Holtmann" <marcel@...tmann.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [linux-usb-devel] [RFC] HID bus design overview.

On 4/2/07, Jiri Kosina <jkosina@...e.cz> wrote:
> On Mon, 2 Apr 2007, Li Yu wrote:
>
> > Hi, I do not think that using blacklist in base driver for this purpose
> > is good idea. If so, we need modify source when each new HID device
> > driver come, that's so ugly.
>
> Hi Li,
>
> well, the drivers are exceptions from the generic handling, so creating an
> exceptional rule (entry in hid_blacklist) for them is not that bad. OK,
> it's not the nicest thing on earth probably, but serves the purpose in
> current vendors-trying-to-break-hardware-in-the-most-original-way world
> quite well.
>

Potentially we could even generate 2nd blacklist table automatically
by scanning MODULE_DEVICE_TABLEs for all drivers in HID directory and
merge it with the table we currently maintain in hid-input.c

> This is going to cause some headache to out-of-tree drivers. Oh well, do
> we care that much?

They still can be made to work using bind/unbind via sysfs, but at
this moment there are 0 drivers for HID bus and hopefully people will
be submittin them for inclusion.

-- 
Dmitry
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