Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757303Ab0DWQTI (ORCPT ); Fri, 23 Apr 2010 12:19:08 -0400 Received: from kroah.org ([198.145.64.141]:42824 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753525Ab0DWQS7 (ORCPT ); Fri, 23 Apr 2010 12:18:59 -0400 Date: Fri, 23 Apr 2010 09:14:55 -0700 From: Greg KH To: Alan Stern Cc: Eric Lescouet , "linux-kernel@vger.kernel.org" , linux-usb@vger.kernel.org Subject: Re: USBIP (staging) driver's dependency on drivers/usb/core internal headers Message-ID: <20100423161455.GA21129@kroah.com> References: <20100423150734.GA7778@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2076 Lines: 50 On Fri, Apr 23, 2010 at 11:52:26AM -0400, Alan Stern wrote: > On Fri, 23 Apr 2010, Greg KH wrote: > > > On Fri, Apr 23, 2010 at 12:44:11PM +0200, Eric Lescouet wrote: > > > Hi, > > > > > > The USBIP modules (and some others) have a direct dependency on the following headers: > > > - drivers/usb/core/hdc.h (struct usb_hcd and various routines) > > > - drivers/usb/core/hub.h (couple of constants) > > > Because those headers are not part of include/, it makes it quite difficult > > > to compile them as standalone modules (e.g.: against pre-compiled kernel). > > > > Then don't do that :) > > > > > hdc.c and hub.c are relatively self-contained and could be moved to e.g.: include/linux/usb/. > > > > > > What do you think? > > > > I think the code needs to be cleaned up and merged to the main part of > > the kernel tree, then this wouldn't be an issue, right? > > I think moving hub.h into include/linux/usb would be a good thing. > However, if this is done then the file contents should be rearranged > slightly: > > Everything from the "Hub request types" comment through the > various HUB_TTTT_* definitions (except the line declaring > struct usb_device) should be extracted into a separate file. > This new file could be called ch11.h (because it contains > constants and structures from Chapter 11 of the USB 2.0 spec, > just as ch9.h contains information from Chapter 9) or it > could keep the name hub.h. It could even be exported as > a userspace header file. > > The remainder (not very much) should be merged into hcd.h. > > Once that's done, moving hcd.h into include/linux/usb would be a > reasonable thing to do as well. It is shared between usbcore and the > HCDs, so it really does belong in a more public location. Ok, fair enough. Patches are always welcome :) thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/