From mboxrd@z Thu Jan 1 00:00:00 1970 From: Daniel Walker Subject: Re: [PATCH] msm: watchdog: support watchdog on 8x60 and 8960 Date: Wed, 30 Mar 2011 09:03:26 -0700 Message-ID: <1301501006.5346.2.camel@m0nster> References: <1301105894-22835-1-git-send-email-johlstei@codeaurora.org> <1301426560.4049.0.camel@m0nster> <4D92B43B.5050101@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from fifo99.com ([67.223.236.141]:39514 "EHLO fifo99.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754659Ab1C3QDg (ORCPT ); Wed, 30 Mar 2011 12:03:36 -0400 In-Reply-To: <4D92B43B.5050101@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org To: Jeff Ohlstein Cc: Bryan Huntsman , David Brown , linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Russell King , Stepan Moskovchenko , Gregory Bean , Abhijeet Dharmapurikar On Tue, 2011-03-29 at 21:40 -0700, Jeff Ohlstein wrote: > Daniel Walker wrote: > > Are you saying this is mostly a debugging facility ? The interrupts off > > thing I can see as just debugging, but I don't understand the bus > > lockups part. > > > > It isn't just a debugging facility. It is still beneficial to the end user > in that it restarts the system if there is a bus lockup or a faulty > interrupt > handler in a rarely used codepath. This is better than the alternative > of draining > the battery and turning off. We want this to be turned on independent of > what userspace > one is using, unless they explicitly turn it off themselves. It doesn't sound too different that all the other watchdogs in drivers/watchdog/ .. Your just detecting lockups right? Daniel