From owner-freebsd-usb@FreeBSD.ORG  Tue Jul 28 11:51:47 2009
Return-Path: <owner-freebsd-usb@FreeBSD.ORG>
Delivered-To: freebsd-usb@FreeBSD.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 4ED72106564A;
	Tue, 28 Jul 2009 11:51:47 +0000 (UTC)
	(envelope-from rea-fbsd@codelabs.ru)
Received: from 0.mx.codelabs.ru (0.mx.codelabs.ru [144.206.177.45])
	by mx1.freebsd.org (Postfix) with ESMTP id 028628FC1A;
	Tue, 28 Jul 2009 11:51:46 +0000 (UTC)
	(envelope-from rea-fbsd@codelabs.ru)
DomainKey-Signature: a=rsa-sha1; q=dns; c=simple; s=one; d=codelabs.ru;
	h=Received:Date:From:To:Cc:Subject:Message-ID:Reply-To:References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To:Sender;
	b=nXpFIIviiSIb6VbkcJRrTGof2rlrvUat7MGKUprnWrlOU14yf0f0Det51kaVmY2iguEsX6YqTEHSQ4qDi2b/0bJ56+zoEK6XIzaWeYf+dROtd/LIJ8Ok6mRyr1JIGsqIQHZOQ03Y/oU6h47reVwBxLe/m/jj+HUxAbkw5bEu6/Y=;
Received: from void.codelabs.ru (void.codelabs.ru [144.206.177.25])
	by 0.mx.codelabs.ru with esmtpsa (TLSv1:AES256-SHA:256)
	id 1MVlDd-00026N-Md; Tue, 28 Jul 2009 15:51:45 +0400
Date: Tue, 28 Jul 2009 15:51:43 +0400
From: Eygene Ryabinkin <rea-fbsd@codelabs.ru>
To: bug-followup@FreeBSD.org, freebsd-usb@FreeBSD.org
Message-ID: </kNvT4PUQiAaILwpSOAKI37SlXY@CWODRlDR5RMqbkBfR0/UzHcfNhE>
References: <20090727194459.393CFB8090@phoenix.codelabs.ru>
	<200907271950.n6RJo3jj021164@freefall.freebsd.org>
	<8RwwU1KLz1ezvFiU9HsY6uoNfkU@nflB3XSqYRRHWdyVHMOFGnCK5Pk>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <8RwwU1KLz1ezvFiU9HsY6uoNfkU@nflB3XSqYRRHWdyVHMOFGnCK5Pk>
Sender: rea-fbsd@codelabs.ru
Cc: 
Subject: Re: usb/137189: [usb][patch] create and use sysctl nodes for HID
 report descriptors
X-BeenThere: freebsd-usb@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: rea-fbsd@codelabs.ru
List-Id: FreeBSD support for USB <freebsd-usb.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-usb>,
	<mailto:freebsd-usb-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-usb>
List-Post: <mailto:freebsd-usb@freebsd.org>
List-Help: <mailto:freebsd-usb-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-usb>,
	<mailto:freebsd-usb-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 28 Jul 2009 11:51:47 -0000

Hans Petter, good day.

HPS wrote:
> Can you change your patch, so that usbhidctl uses libusb to get the
> HID descriptor, instead of sysctl?

I can, but how to relate the device name under devfs to the descriptor
to be retrieved?  I can enumerate all HID descriptors via libusb, but I
can't currently say which device uses them.  And I don't want to torture
users with the crawl over the list of all vendor/device pairs for the
discovered HID descriptors and ask to choose one -- that's not
productive.

Why do you dislike the sysctl approach?  It is simple and reliable.
-- 
Eygene
 _                ___       _.--.   #
 \`.|\..----...-'`   `-._.-'_.-'`   #  Remember that it is hard
 /  ' `         ,       __.--'      #  to read the on-line manual
 )/' _/     \   `-_,   /            #  while single-stepping the kernel.
 `-'" `"\_  ,_.-;_.-\_ ',  fsc/as   #
     _.-'_./   {_.'   ; /           #    -- FreeBSD Developers handbook
    {_.-``-'         {_/            #