From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nishanth Menon Subject: regression: OMAP4 (next-20141204) (bisect to: ARM: 8208/1: l2c: Refactor the driver to use commit-like) Date: Fri, 5 Dec 2014 10:10:59 -0600 Message-ID: <5481D913.9040109@ti.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from devils.ext.ti.com ([198.47.26.153]:47929 "EHLO devils.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750896AbaLEQLy (ORCPT ); Fri, 5 Dec 2014 11:11:54 -0500 Sender: linux-next-owner@vger.kernel.org List-ID: To: Kevin Hilman , Tomasz Figa , Marek Szyprowski , Russell King Cc: linux-omap , "tony@atomide.com" , "linux-arm-kernel@lists.infradead.org" , linux-next linux-next next-20141204 fails to boot, but next-20141203 boots fine with omap2plus_defconfig. Panda-ES(4460): https://github.com/nmenon/kernel-test-logs/blob/next-20141204/omap2plus_defconfig/pandaboard-es.txt Panda(4430): https://github.com/nmenon/kernel-test-logs/blob/next-20141204/omap2plus_defconfig/pandaboard-vanilla.txt at the point of hang (JTAG): pandaboard-es: cpu0: http://slexy.org/view/s2eIFqkRd5 cpu1: http://slexy.org/view/s2Tysb6gpL Case #1: Disabling CPUIDLE allows boot to proceed. there does not seem to have been any change in drivers/cpuidle and arch/arm/mach-omap2 w.r.t this. Case #2: Reverting the following allows boot. >>From next-20141204 10df7d5 ARM: 8211/1: l2c: Add support for overriding prefetch settings revert this -> boot still fails d42ced0 ARM: 8210/1: l2c: Get outer cache .write_sec callback from mach_desc only if not NULL revert this -> boot still fails 46b9af8 ARM: 8209/1: l2c: Add interface to ask hypervisor to configure L2C revert this -> boot still fails c94e325 ARM: 8208/1: l2c: Refactor the driver to use commit-like revert this -> boot passed (first bad commit). -- Regards, Nishanth Menon