From mboxrd@z Thu Jan 1 00:00:00 1970 From: Lokesh Vutla Subject: Re: 3.12: omap4: cpuidle: solid hangs at boot Date: Fri, 15 Nov 2013 14:41:00 +0530 Message-ID: <5285E524.50202@ti.com> References: <20131114110445.GB4594@luxor.wired.org> Mime-Version: 1.0 Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit Return-path: Received: from bear.ext.ti.com ([192.94.94.41]:53274 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757190Ab3KOJLG (ORCPT ); Fri, 15 Nov 2013 04:11:06 -0500 In-Reply-To: <20131114110445.GB4594@luxor.wired.org> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: Paolo Pisati Cc: linux-omap , Kevin Hilman , Rajendra Nayak + Kevin Hi Paolo, On Thursday 14 November 2013 04:34 PM, Paolo Pisati wrote: > Vanilla 3.12 multi_v7_defconfig + cpu_idle result in a solid hang on my pandaes > board: has anyone experienced it before? is cpu_idle safe on omap4? I have also seen the same issue on my panda es board. On further investigation, it seemed to work on 3.11 and broken between 3.12-rc1 and 3.12-rc2 because of the following patch: 7835027 ARM: OMAP4: cpuidle: fix: call cpu_cluster_pm_exit conditionally (http://www.mail-archive.com/linux-omap@vger.kernel.org/msg94655.html) But by applying a recent patch from Grygorii Strashko https://patchwork.kernel.org/patch/3084521/ seems to make it work. You can give a try by applying the given patch. Kevin, please correct me if I am wrong. Thanks and regards, Lokesh > > same kernel boots fine on omap3 and some other arm boards fwiw. > if you want to reproduce it: > > config: http://people.canonical.com/~ppisati/3.12_armv7multi_cpuidle/config > > zImage: http://people.canonical.com/~ppisati/3.12_armv7multi_cpuidle/zImage > > boot log: http://paste.ubuntu.com/6415293/ >