From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755587AbaHFKqw (ORCPT ); Wed, 6 Aug 2014 06:46:52 -0400 Received: from mx2.digadd.de ([195.47.195.236]:37565 "EHLO mx1.digadd.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752943AbaHFKqv (ORCPT ); Wed, 6 Aug 2014 06:46:51 -0400 X-Greylist: delayed 1220 seconds by postgrey-1.27 at vger.kernel.org; Wed, 06 Aug 2014 06:46:51 EDT Message-ID: <53E202A6.3080002@digadd.de> Date: Wed, 06 Aug 2014 12:25:42 +0200 From: Christian Schmidt User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 MIME-Version: 1.0 To: linux-kernel@vger.kernel.org Subject: i2c-i801 vs. ACPI driver to access SMBUS Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi all, I have a small issue with the i2c-i801 driver. It does not register the i2c adaptor due to an ACPI resource conflict: [11074.459747] ACPI Warning: SystemIO range 0x000000000000f000-0x000000000000f01f conflicts with OpRegion 0x000000000000f000-0x000000000000f00f (\_SB_.PCI0.SBUS.SMBI) (20140214/utaddress-258) [11074.459761] ACPI: If an ACPI driver is available for this device, you should use it instead of the native driver With the code: err = acpi_check_resource_conflict(&dev->resource[SMBBAR]); if (err) { err = -ENODEV; goto exit; } silently not activating the driver, however it still shows up in lspci -k. Commenting out the above code makes the driver provide the smbus interface as expected, The question is: Is there any existing ACPI driver for this? I can't find any either under ACPI or i2c (i2c-scmi does not work for this). Regards, Christian PS: Please CC: me on replies as I am not subscribed to the list.