From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753146AbcBONLy (ORCPT ); Mon, 15 Feb 2016 08:11:54 -0500 Received: from foss.arm.com ([217.140.101.70]:45214 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751114AbcBONLw (ORCPT ); Mon, 15 Feb 2016 08:11:52 -0500 Subject: Re: arm qemu test failures due to 'driver-core: platform: probe of-devices only using list of compatibles' To: =?UTF-8?Q?Uwe_Kleine-K=c3=b6nig?= , Guenter Roeck References: <20160214165010.GA3189@roeck-us.net> <20160215105909.GH12289@pengutronix.de> Cc: Greg Kroah-Hartman , linux-next@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org From: Robin Murphy Message-ID: <56C1CE95.6020206@arm.com> Date: Mon, 15 Feb 2016 13:11:49 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 In-Reply-To: <20160215105909.GH12289@pengutronix.de> Content-Type: text/plain; charset=windows-1252; format=flowed Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 15/02/16 10:59, Uwe Kleine-König wrote: > Hello Guenter, > > On Sun, Feb 14, 2016 at 08:50:10AM -0800, Guenter Roeck wrote: >> Uwe, >> >> Your patch 'driver-core: platform: probe of-devices only using list of >> compatibles' causes the following qemu tests to crash in -next. >> >> arm:vexpress-a9:vexpress_defconfig:vexpress-v2p-ca9 >> arm:vexpress-a15:vexpress_defconfig:vexpress-v2p-ca15-tc1 >> arm:vexpress-a9:multi_v7_defconfig:vexpress-v2p-ca9 >> arm:vexpress-a15:multi_v7_defconfig:vexpress-v2p-ca15-tc1 >> >> Crash log: >> >> VFS: Cannot open root device "mmcblk0" or unknown-block(0,0): error -6 >> Please append a correct "root=" boot option; here are the available partitions: >> 1f00 131072 mtdblock0 (driver?) >> 1f01 32768 mtdblock1 (driver?) >> Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) > > Can you provide a complete boot log? This might already reveal which > device is failing. It might not be the mmci device but something it > depends on (clock, bus parent, irq). FWIW the PL180 on my Juno still works fine with this patch picked on top of -rc3, so the issue would seem to be something else - From a quick comparison between the DTs I see a slight difference in compatible strings for the clocks, but the more likely-looking suspect is that the VExpress DT references some GPIOs where the Juno DT doesn't. Robin. > > Best regards > Uwe >