Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751193AbbFKFOD (ORCPT ); Thu, 11 Jun 2015 01:14:03 -0400 Received: from bh-25.webhostbox.net ([208.91.199.152]:58946 "EHLO bh-25.webhostbox.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750905AbbFKFN7 (ORCPT ); Thu, 11 Jun 2015 01:13:59 -0400 Message-ID: <5579190E.8000803@roeck-us.net> Date: Wed, 10 Jun 2015 22:13:50 -0700 From: Guenter Roeck User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: Timur Tabi , Fu Wei CC: Suravee Suthikulpanit , Linaro ACPI Mailman List , linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Wei Fu , G Gregory , Al Stone , Hanjun Guo , Ashwin Chaugule , Arnd Bergmann , Vipul Gandhi , Wim Van Sebroeck , Jon Masters , Leo Duran , Jon Corbet , Mark Rutland , Catalin Marinas , Will Deacon , rjw@rjwysocki.net Subject: Re: [PATCH v4 5/7] Watchdog: introduce ARM SBSA watchdog driver References: <=fu.wei@linaro.org> <1433217907-928-1-git-send-email-fu.wei@linaro.org> <1433217907-928-6-git-send-email-fu.wei@linaro.org> <556DCC95.806@codeaurora.org> <556DE2D5.3090906@roeck-us.net> <5575DE48.8010308@roeck-us.net> <55766D74.2060401@roeck-us.net> <55769E0E.8060801@roeck-us.net> <557712CF.8010802@roeck-us.net> <5577147B.2030900@codeaurora.org> <5577180E.4070804@roeck-us.net> <5578D4D5.3070109@codeaurora.org> <55790455.7090809@codeaurora.org> In-Reply-To: <55790455.7090809@codeaurora.org> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Authenticated_sender: linux@roeck-us.net X-OutGoing-Spam-Status: No, score=0.0 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-Source: X-Source-Args: X-Source-Dir: Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 751 Lines: 17 On 06/10/2015 08:45 PM, Timur Tabi wrote: > Fu Wei wrote: >> Could you suggest a good way to use WS0, so we can follow SBSA spec? > > To avoid the timeout/2 problem, WS0 calls panic, which is the "real" timeout/reset. WS1 is then a "backup" that is ignored by the driver. That is, the driver doesn't do anything with WS1 and it doesn't tell the kernel about WS1. > > I know you don't like the idea of WS1 as a backup timeout, but this is one way to solve the problem. > This is what I would do. Guenter -- 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/