Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756221Ab1DOOuU (ORCPT ); Fri, 15 Apr 2011 10:50:20 -0400 Received: from wolverine02.qualcomm.com ([199.106.114.251]:54822 "EHLO wolverine02.qualcomm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754935Ab1DOOuS (ORCPT ); Fri, 15 Apr 2011 10:50:18 -0400 X-IronPort-AV: E=McAfee;i="5400,1158,6316"; a="85828546" Message-ID: <4DA85B24.50807@codeaurora.org> Date: Fri, 15 Apr 2011 20:20:12 +0530 From: Murali Nalajala User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.15) Gecko/20110303 Thunderbird/3.1.9 MIME-Version: 1.0 To: dedekind1@gmail.com CC: dwmw2@infradead.org, linux-mtd@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Dima Zavin , Brian Swetland , =?UTF-8?B?QXJ2ZSBIasO4bm5ldsOlZw==?= Subject: Re: [PATCH 2/2] mtd: msm_nand: Add initial msm nand driver support. References: <1298940450-27365-1-git-send-email-mnalajal@codeaurora.org> <1298940450-27365-2-git-send-email-mnalajal@codeaurora.org> <1302861097.3220.12.camel@localhost> In-Reply-To: <1302861097.3220.12.camel@localhost> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2440 Lines: 69 On 4/15/2011 3:21 PM, Artem Bityutskiy wrote: > On Tue, 2011-03-01 at 06:17 +0530, Murali Nalajala wrote: >> +#define pr_fmt(fmt) "%s:" fmt, __func__ >> + >> +#include >> +#include >> +#include >> +#include >> +#include >> +#include >> +#include >> +#include >> +#include >> +#include >> + >> +#include "msm_nand.h" >> + >> +unsigned long msm_nand_phys; > > No global variables like this please. Here is how you use them: > > +extern unsigned long msm_nand_phys; extern declaration in the 'C' file causing warning. We are in plan to upload the OneNAND changes soon which makes use of the same .h file. > +#define MSM_NAND_REG(off) (msm_nand_phys + (off)) > + > +#define MSM_NAND_FLASH_CMD MSM_NAND_REG(0x0000) > +#define MSM_NAND_ADDR0 MSM_NAND_REG(0x0004) > > Could you please make the macros to take the "struct msm_nand_chip > *chip" argument instead, and store the pase address there. Do not hide > the fact that those macros are actually functions, not constant - this > is error prone. > > Besides, I'm do not know your HW, but if you have several controllers > with various base addresses - your driver won't work. you are correct, we have multiple controllers, which breaks this logic in future. > >> + pr_info("Save cfg0 = %x cfg1 = %x\n", chip->cfg0, chip->cfg1); >> + pr_info("cfg0: cw/page=%d ud_sz=%d ecc_sz=%d spare_sz=%d " >> + "num_addr_cycles=%d\n", (chip->cfg0>> 6)& 7, >> + (chip->cfg0>> 9)& 0x3ff, (chip->cfg0>> 19)& 15, >> + (chip->cfg0>> 23)& 15, (chip->cfg0>> 27)& 7); > > Please, revise all your pr_info() calls and turn most of them into > dev_dbg() or pr_debug. Your driver should be completely silent by > default, except of error messages and some information messages when it > is initialized. > > I will revise all the pr_info calls and change the inappropriate calls to pr_debug. Thanks, Murali N -- Sent by an employee of the Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum. -- 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/