From mboxrd@z Thu Jan 1 00:00:00 1970 From: Wolfgang Grandegger Subject: Re: [Uclinux-dist-devel] [PATCH v3] add the driver for Analog Devices Blackfin on-chip CAN controllers Date: Thu, 10 Dec 2009 11:20:50 +0100 Message-ID: <4B20CB82.6060702@grandegger.com> References: <1260430072-21106-1-git-send-email-21cnbao@gmail.com> <4B20BB36.50509@grandegger.com> <8bd0f97a0912100204gd2b09f6r2799d9f951d6b9e1@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: "H.J. Oertel" , netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, socketcan-core-0fE9KPoRgkgATYTw5x5z8w@public.gmane.org, uclinux-dist-devel-ZG0+EudsQA8dtHy/vicBwGD2FQJk+8+b@public.gmane.org, davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org To: Mike Frysinger Return-path: In-Reply-To: <8bd0f97a0912100204gd2b09f6r2799d9f951d6b9e1-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: socketcan-core-bounces-0fE9KPoRgkgATYTw5x5z8w@public.gmane.org Errors-To: socketcan-core-bounces-0fE9KPoRgkgATYTw5x5z8w@public.gmane.org List-Id: netdev.vger.kernel.org Mike Frysinger wrote: > On Thu, Dec 10, 2009 at 04:11, Wolfgang Grandegger wrote: >> Barry Song wrote: >>> +#include >>> +#include >>> +#include >>> +#include >> I think you don't need "types.h" as the code no longer uses "uint*_t". > > linux/types.h declares all types, like u* which this driver still uses I just remember that "linux/types.h" needs to be added for the uint*_t types. At a first glance I do not see __u8/u8 being defined in that header file but I might have missed something. > >> Well, I'm still not a friend of the following inline functions, >> especially the *one-liners* which are called just *once*. With the usage >> of structs they seem even more useless. > > seems like it would make more sense to not even use the read/write > functions either. just declare the regs as volatile and assign/read > the struct directly. Two times no. Don't use volatile and proper accessor functions. See: http://lxr.linux.no/#linux+v2.6.32/Documentation/volatile-considered-harmful.txt Wolfgang. > >