From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754110Ab3LTEYV (ORCPT ); Thu, 19 Dec 2013 23:24:21 -0500 Received: from mail.linuxfoundation.org ([140.211.169.12]:49011 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752088Ab3LTEYT (ORCPT ); Thu, 19 Dec 2013 23:24:19 -0500 Date: Thu, 19 Dec 2013 20:24:26 -0800 From: Greg KH To: Ravi Patel Cc: Arnd Bergmann , davem@davemloft.net, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, jcm@redhat.com, patches@apm.com, Keyur Chudgar Subject: Re: [PATCH 2/4] misc: xgene: Add base driver for APM X-Gene SoC Queue Manager/Traffic Manager Message-ID: <20131220042426.GA21726@kroah.com> References: <1387507503-7565-1-git-send-email-rapatel@apm.com> <1387507503-7565-3-git-send-email-rapatel@apm.com> <20131220032133.GB32310@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.22 (2013-10-16) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org A: Top-posting. Q: What is the most annoying thing in e-mail? http://daringfireball.net/2007/07/on_top On Thu, Dec 19, 2013 at 07:41:13PM -0800, Ravi Patel wrote: > There is no need to talk to this driver from userspace. > It is a device which is used by other IO devices to communicate with each > other, including CPU. > For example, if CPU (software) wants to send a message to Ethernet HW (i.e. > send packet), > it used this driver to enqueue a message to Ethernet. > In other direction, if Ethernet HW receives a packet, it uses QM/TM device to > send message to > CPU (software) to process packet. So it's a "bus" type of thing, right? My question of "why isn't this reflected in the driver model" still stands. thanks, greg k-h