From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965528AbcBCS0T (ORCPT ); Wed, 3 Feb 2016 13:26:19 -0500 Received: from smtp.codeaurora.org ([198.145.29.96]:41413 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965077AbcBCS0R (ORCPT ); Wed, 3 Feb 2016 13:26:17 -0500 Subject: Re: [PATCH v10 5/5] Watchdog: ARM SBSA Generic Watchdog half timeout panic support To: Fu Wei Cc: Rob Herring , =?UTF-8?Q?Pawe=c5=82_Moll?= , Mark Rutland , Ian Campbell , Kumar Gala , Wim Van Sebroeck , Guenter Roeck , Jon Corbet , Catalin Marinas , Will Deacon , Suravee Suthikulpanit , LKML , linux-watchdog@vger.kernel.org, linux-doc@vger.kernel.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Linaro ACPI Mailman List , rruigrok@codeaurora.org, "Abdulhamid, Harb" , Christopher Covington , Dave Young , Pratyush Anand , G Gregory , Al Stone , Hanjun Guo , Jon Masters , Arnd Bergmann , Leo Duran , sudeep.holla@arm.com References: <1454519923-25230-1-git-send-email-fu.wei@linaro.org> <1454519923-25230-6-git-send-email-fu.wei@linaro.org> <56B23883.7000501@codeaurora.org> <56B23E99.1030604@codeaurora.org> <56B2423B.1020109@codeaurora.org> From: Timur Tabi Message-ID: <56B24642.8090105@codeaurora.org> Date: Wed, 3 Feb 2016 12:26:10 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:42.0) Gecko/20100101 Firefox/42.0 SeaMonkey/2.39 MIME-Version: 1.0 In-Reply-To: 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 Fu Wei wrote: > Actually, > the SBSA watchdog driver should support only half-timeout for panic > the user cannot configure the length of "panic time", He can only > enable it, and it is automatically set to 1/2 timeout. > > we don't need pre-timeout here. > > Hope I understand you correctly:-) sorry for your confusion > >> > >> >So when pre-timeout occurs, the interrupt handler calls panic() or whatever >> >it's supposed to do. > Actually, > So when 1/2 timeout occurs, the interrupt handler calls panic() or > whatever it's supposed to do. > I understand all that. What I'm saying is that, in the future, when pre-timeout support is added to the watchdog layer, I think it makes sense to modify this driver to use pre-timeout support.