From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sebastien Bourdeauducq Subject: "i2c_hid: Could not register for interrupt, irq = -1" on Thinkpad Tablet 10 Date: Sat, 31 Jan 2015 23:01:17 +0800 Message-ID: <54CCEE3D.9040306@m-labs.hk> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from ssl.serverraum.org ([88.198.40.39]:44652 "EHLO ssl.serverraum.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751950AbbAaPQ6 (ORCPT ); Sat, 31 Jan 2015 10:16:58 -0500 Received: from localhost (localhost [127.0.0.1]) by ssl.serverraum.org (Postfix) with ESMTP id 620F13F12C for ; Sat, 31 Jan 2015 16:01:21 +0100 (CET) Received: from ssl.serverraum.org ([127.0.0.1]) by localhost (ssl.serverraum.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Pj1nZc-0iubL for ; Sat, 31 Jan 2015 16:01:21 +0100 (CET) Received: from [192.168.0.104] (123202036015.ctinets.com [123.202.36.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by ssl.serverraum.org (Postfix) with ESMTPSA id 3CBF83F12B for ; Sat, 31 Jan 2015 16:01:19 +0100 (CET) Sender: linux-input-owner@vger.kernel.org List-Id: linux-input@vger.kernel.org To: linux-input@vger.kernel.org Hi, among the many problems that the Baytrail-based Thinkpad Tablet 10 has under Linux, the built-in Wacom digitizer does not work. I get the following messages in the kernel log (with i2c_hid.debug=1): [ 593.224249] i2c_hid i2c-WCOM0008:00: Fetching the HID descriptor [ 593.224259] i2c_hid i2c-WCOM0008:00: __i2c_hid_command: cmd=01 00 [ 593.243080] i2c_hid i2c-WCOM0008:00: HID Descriptor: 1e 00 00 01 ee 00 02 00 03 00 0a 00 00 00 00 00 04 00 05 00 6a 05 14 01 02 03 00 00 00 00 [ 593.243110] i2c_hid i2c-WCOM0008:00: Could not register for WCOM0008:00 interrupt, irq = -1, ret = -22 [ 593.253422] i2c_hid: probe of i2c-WCOM0008:00 failed with error -22 What should I look at? Sebastien