From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751235AbcFXOyv (ORCPT ); Fri, 24 Jun 2016 10:54:51 -0400 Received: from bh-25.webhostbox.net ([208.91.199.152]:48366 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750972AbcFXOyt (ORCPT ); Fri, 24 Jun 2016 10:54:49 -0400 Subject: Re: [PATCH 1/5] hwmon: (tmp102) Use devm_add_action to register cleanup function To: Nishanth Menon , Jean Delvare References: <1466728108-2512-1-git-send-email-linux@roeck-us.net> <576D401D.80700@ti.com> <576D4421.8080704@roeck-us.net> Cc: linux-hwmon@vger.kernel.org, linux-kernel@vger.kernel.org From: Guenter Roeck Message-ID: <576D49AA.8020406@roeck-us.net> Date: Fri, 24 Jun 2016 07:54:34 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.8.0 MIME-Version: 1.0 In-Reply-To: <576D4421.8080704@roeck-us.net> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 7bit X-Authenticated_sender: linux@roeck-us.net X-OutGoing-Spam-Status: No, score=-1.0 X-AntiAbuse: This header was added to track abuse, please include it with any abuse report X-AntiAbuse: Primary Hostname - bh-25.webhostbox.net X-AntiAbuse: Original Domain - vger.kernel.org X-AntiAbuse: Originator/Caller UID/GID - [47 12] / [47 12] X-AntiAbuse: Sender Address Domain - roeck-us.net X-Get-Message-Sender-Via: bh-25.webhostbox.net: authenticated_id: linux@roeck-us.net X-Authenticated-Sender: bh-25.webhostbox.net: linux@roeck-us.net X-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 06/24/2016 07:30 AM, Guenter Roeck wrote: > Hi Nishanth, > > On 06/24/2016 07:13 AM, Nishanth Menon wrote: >> On 06/23/2016 07:28 PM, Guenter Roeck wrote: >>> By registering a cleanup function with devm_add_action(), we can >>> simplify the error path in the probe function and drop the remove >>> function entirely. >>> >>> Signed-off-by: Guenter Roeck >> >> I dont seem to have a cover letter to reply to... but anyways.. >> >> Before: http://pastebin.ubuntu.com/17801376/ >> After all 5 patches: http://pastebin.ubuntu.com/17801824/ >> >> Fails on beagleboard-X15 with: >> [ 36.781509] tmp102 0-0048: No cache defaults, reading back from HW >> [ 36.795940] tmp102 0-0048: unexpected config register value >> >> I have'nt bisected down on the specific patch in the series. Have you had a chance to test the series? >> >> > > Thanks for testing. Yes, I did test it. Maybe different chip revisions, or different > initial config register values and I messed up there. Can you send me the output > of i2cdump (word wide) ? > Also, beagleboard uses the omap i2c controller, correct ? I'll have to check if regmap handles endianness conversion properly for controllers supporting I2C_FUNC_I2C. If some other i2c controller is used, please let me know (or sene me the output of i2cdetect -l). Recent kernels have a bug in regmap which affects chips with 16-bit registers if I2C_FUNC_I2C is not supported. Maybe I should get a beagleboard. The X15 isn't available yet, though. Do the available boards (eg Rev C) use the same i2c controller ? Thanks, Guenter