Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752521Ab0AGMLe (ORCPT ); Thu, 7 Jan 2010 07:11:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752475Ab0AGMLd (ORCPT ); Thu, 7 Jan 2010 07:11:33 -0500 Received: from mta-2.ms.rz.RWTH-Aachen.DE ([134.130.7.73]:41506 "EHLO mta-2.ms.rz.rwth-aachen.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752474Ab0AGMLd (ORCPT ); Thu, 7 Jan 2010 07:11:33 -0500 MIME-version: 1.0 Content-transfer-encoding: 7BIT Content-type: text/plain; charset=ISO-8859-1 X-IronPort-AV: E=Sophos;i="4.49,234,1262559600"; d="scan'208";a="40025910" Message-id: <4B45CF73.9090304@nets.rwth-aachen.de> Date: Thu, 07 Jan 2010 13:11:31 +0100 From: Arnd Hannemann User-Agent: Thunderbird 2.0.0.23 (X11/20090817) To: Richard Purdie Cc: Arnd Hannemann , Daniel Mack , LKML , "linux-geode@lists.infradead.org" Subject: Re: 2.6.33-rc3 regression: leds_alix2: can't allocate I/O for GPIO References: <4B45B6DD.4060903@nets.rwth-aachen.de> <1262861484.8493.14.camel@dax.rpnet.com> <4B45CC4C.4030603@nets.rwth-aachen.de> In-reply-to: <4B45CC4C.4030603@nets.rwth-aachen.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1603 Lines: 45 Arnd Hannemann schrieb: > Richard Purdie schrieb: >> On Thu, 2010-01-07 at 11:26 +0100, Arnd Hannemann wrote: >>> with 2.6.33-rc3 the LEDs are not working anymore on my Geode embedded board: >>> If I remember correctly this was working fine with 2.6.32, but certainly with 2.6.31 >>> >>> relevant dmesg output of 2.6.33-rc3: >>> >>> [ 0.709643] cs5535_gpio: base=0x6100 mask=0xb003c66 major=253 >>> >>> [ 2.207947] leds_alix2: system is recognized as "PC Engines ALIX.2 v0.99h" >>> [ 2.228678] leds_alix2: can't allocate I/O for GPIO >>> >>> >>> For reference dmesg of 2.6.31.3: >>> >>> [ 0.611953] cs5535_gpio: base=0x6100 mask=0xb003c66 major=253 >>> >>> [ 2.379114] leds_alix2: system is recognized as "PC Engines ALIX.2" >>> [ 2.399097] Registered led device: alix:1 >>> [ 2.411404] Registered led device: alix:2 >>> [ 2.423720] Registered led device: alix:3 >> Its likely to be commit 7f131cf3ed96c969d7b092bf629e25c3df50901e. It >> looks like the request_region() call is failing. Daniel, any idea why? > > Some additional debug information: > > elara:~# rdmsr 0x5140000C > f00100006100 > > /proc/ioports says: > 6100-61ff : 0000:00:0f.0 > 6100-61ff : cs5535_gpio > > BTW: why is request_region() needed there after all? Oh, maybe using cs5535_gpio AND leds_alix2 together was never supposed to work? Best regards, Arnd -- 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/