Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752762AbYL2QNu (ORCPT ); Mon, 29 Dec 2008 11:13:50 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751601AbYL2QN0 (ORCPT ); Mon, 29 Dec 2008 11:13:26 -0500 Received: from iolanthe.rowland.org ([192.131.102.54]:51095 "HELO iolanthe.rowland.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751245AbYL2QNZ (ORCPT ); Mon, 29 Dec 2008 11:13:25 -0500 Date: Mon, 29 Dec 2008 11:13:24 -0500 (EST) From: Alan Stern X-X-Sender: stern@iolanthe.rowland.org To: Julia Lawall cc: gregkh@suse.de, , , , Subject: Re: [PATCH 10/13] drivers/usb/gadget: use USB API functions rather than constants In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1997 Lines: 52 On Mon, 29 Dec 2008, Julia Lawall wrote: > > ... > > > > > diff --git a/drivers/usb/gadget/file_storage.c b/drivers/usb/gadget/file_storage.c > > > index 88fedd0..c44092b 100644 > > > --- a/drivers/usb/gadget/file_storage.c > > > +++ b/drivers/usb/gadget/file_storage.c > > > @@ -248,6 +248,7 @@ > > > #include > > > #include > > > > > > +#include > > > #include > > > #include > > > > While there's nothing wrong with this part of the patch, it hardly > > seems necessary. Was there any reason for including it? > > The new functions are defined in usb.h. I have added the include in > this file and in the file epautoconf.c that this file includes. If it is > removed from both, then the code does not compile (after make > allyesconfig): > > In file included from drivers/usb/gadget/file_storage.c:268: > drivers/usb/gadget/epautoconf.c: In function 'ep_matches': > drivers/usb/gadget/epautoconf.c:79: error: implicit declaration of > function 'usb_endpoint_type' > drivers/usb/gadget/epautoconf.c:122: error: implicit declaration of > function 'usb_endpoint_dir_in' > make[1]: *** [drivers/usb/gadget/file_storage.o] Error 1 > make: *** [drivers/usb/gadget/file_storage.o] Error 2 > > While putting it in epautoconf.c would be sufficient, the includes > > #include > #include > > are already repeated in both, so it would seem reasonable to repeat usb.h > in both as well. Ah, but the declarations in ch9.h and gadget.h are used by both files, whereas the declarations in usb.h are used only by epautoconf.c. Hence it seems most reasonable to #include usb.h only in epautoconf.c. Alan Stern -- 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/