From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcel Holtmann Subject: Problem with platform specific RFKILL switches Date: Fri, 09 Jan 2009 20:15:49 +0100 Message-ID: <1231528549.20618.34.camel@californication> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org Return-path: Received: from senator.holtmann.net ([87.106.208.187]:58197 "EHLO mail.holtmann.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752992AbZAITPw (ORCPT ); Fri, 9 Jan 2009 14:15:52 -0500 Received: from [192.168.1.142] (S0106001cf062885c.vc.shawcable.net [24.82.150.230]) by mail.holtmann.org (Postfix) with ESMTP id 87BA98B547 for ; Fri, 9 Jan 2009 20:15:53 +0100 (CET) Sender: netdev-owner@vger.kernel.org List-ID: Hi, so I am working with RFKILL subsystem right now. One major problem that I have is that in the cases of platform RFKILL switches, I have no idea which device it actually belongs to. Lets take my X61 as an example: # udevadm info --query=all --path=/class/rfkill/rfkill0 P: /devices/platform/thinkpad_acpi/rfkill/rfkill0 E: UDEV_LOG=3 E: DEVPATH=/devices/platform/thinkpad_acpi/rfkill/rfkill0 E: RFKILL_NAME=tpacpi_bluetooth_sw E: RFKILL_TYPE=bluetooth E: RFKILL_STATE=1 # udevadm info --query=all --path=/class/rfkill/rfkill1 P: /devices/pci0000:00/0000:00:1c.1/0000:03:00.0/rfkill/rfkill1 E: UDEV_LOG=3 E: DEVPATH=/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/rfkill/rfkill1 E: RFKILL_NAME=4965AGN E: RFKILL_TYPE=wlan E: RFKILL_STATE=1 As you can see for the 4965 WiFi, we clearly have a proper parent and know which device is affected by the RFKILL switch. For the Bluetooth one we have the problem that it just points to a platform device and not the Bluetooth device. Do we have any plans on how to handle this? I would like to identify the affected device. It is kinda tricky with hotplug devices like Bluetooth were it just disconnects from the bus when using the RFKILL switch, but at least when enabled we would see which device is attached to it. So any ideas or is this just wishful thinking on my part? Regards Marcel