From owner-freebsd-usb@FreeBSD.ORG Tue Oct 9 18:05:59 2007 Return-Path: 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 DBDE316A418 for ; Tue, 9 Oct 2007 18:05:59 +0000 (UTC) (envelope-from emdgaurav@gmail.com) Received: from wx-out-0506.google.com (wx-out-0506.google.com [66.249.82.237]) by mx1.freebsd.org (Postfix) with ESMTP id 79EF413C467 for ; Tue, 9 Oct 2007 18:05:59 +0000 (UTC) (envelope-from emdgaurav@gmail.com) Received: by wx-out-0506.google.com with SMTP id i29so1534340wxd for ; Tue, 09 Oct 2007 11:05:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=beta; h=domainkey-signature:received:received:message-id:date:from:to:subject:mime-version:content-type; bh=SVMK6GxvVCn+aCWsEZP2gMj1UNxR29Ym6HOUpZeDUW4=; b=CihLKhQ7gGDeiFB3a7DFb1yCs3kz7qDdwj8QdE2xMUnYSn0ZbKgtUcfFej4XdYm84uLZhKSzRArEmf6EihNe2+rj1AduseWo/IMr0G74XmygI4L8WAwoKfvYGdGXmGDis0x1UmPoFhRnwemC/2jYr05nAlOaqminGG+IsCmQ0dg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=beta; h=received:message-id:date:from:to:subject:mime-version:content-type; b=QDjGfvYkfbgfYRPwrEbrszyWmVJaMC6vrQjQBHQN/fjEaTzmmirMbMT6MH4DV80TlfyN1bZaUghnEi3QFwlPJfrKVwLeIios5HCWovE/MIJZtx8tAQPWvdEjHrBNraIsyEUbdFh9XSg6lDZsQvZRXEN9QzZGelORQ/o+jrIJXQQ= Received: by 10.70.61.3 with SMTP id j3mr27358088wxa.1191951482583; Tue, 09 Oct 2007 10:38:02 -0700 (PDT) Received: by 10.70.62.12 with HTTP; Tue, 9 Oct 2007 10:38:02 -0700 (PDT) Message-ID: Date: Tue, 9 Oct 2007 23:08:02 +0530 From: "GAURAV GUPTA" To: freebsd-usb@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Subject: help for understand the usb calls: X-BeenThere: freebsd-usb@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: FreeBSD support for USB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 09 Oct 2007 18:06:00 -0000 Hi all, My name is tarru .i am trying to understand the usb call . and currently i got struck and i would like to know the difference between functions. usbd_transfer() and usbd_do_request() are we doing anything different ? .i confused since in both cases we are transferring/queering for data to usb device Please let me know if anybody can help on this Thanks, Tarru